Image projection device

Abstract

To enable image information to be seen even without carrying a display apparatus such as a portable terminal device.SOLUTION: An eyeglass type image projection device ("glasses projector 1100) is provided with projection parts 1101 to 1104 provided in a spectacle frame to project an image in a front direction of a user with the user wearing the spectacle frame, and controls the projection part to project the image. The projection parts 1101 (1101a, 1101b) are arranged at parts of "end pieces" of the frame, the projection part 1102 is arranged at a "bridge", the projection parts 1103 (1103a, 1103b) are arranged at an upper part of "rims", and the projection parts 1104 (1104a, 1104b) are arranged at lower parts of the "rims". The projection parts are provided with at least any one of them. The user does not need a terminal device such as a smart phone to look at an image.SELECTED DRAWING: Figure 11

Description

[Technical Field]

[0001] The present invention relates to an image projection device that projects an image, an image projection method, an unmanned aerial vehicle that realizes the image projection method, and an image projection program. [Background technology]

[0002] In recent years, there has been an increasing diversity of opportunities to view images on information terminal devices such as smartphones. A related technology, specifically, a conventional technology, relates to an image display system that is capable of displaying images that are easily visible to unspecified people, by mounting a projection unit on a robot capable of autonomous travel and projecting an image onto the projection surface while detecting the state of the projection surface around the robot (see, for example, Patent Document 1 below). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-125816 [Patent Document 2] International Publication No. 2019 / 215983 [Patent Document 3] Japanese Patent Application Laid-Open No. 2009-251257 Summary of the Invention [Problem to be solved by the invention]

[0004] However, image information could not be viewed unless a display device such as an information terminal device was installed, and projectors could only project images onto a predetermined screen. Furthermore, the conventional technology described in the above-mentioned Patent Document 1 has the problem that it is not suitable for viewing image information addressed to an individual.

[0005] In order to solve the problems associated with the above-mentioned conventional technology, the present invention aims to provide an image projection device, an image projection method, an unmanned aerial vehicle that realizes the image projection method, and an image projection program that allow a user to view image information even if they do not carry a display device such as a mobile terminal device or even if there is no display device such as a display or screen nearby. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the object, the image projection device of the present invention is an eyeglass-type image projection device, which comprises a projection unit provided on an eyeglass frame and projects an image, a receiving unit that receives information addressed to the user, a memory unit that stores the information received by the receiving unit, and a control unit that controls the projection unit to project an image related to the information received by the receiving unit or an image related to the information stored in the memory unit, and is characterized in that the control unit detects that the eyeglass frame is being worn by the user, and projects the image if it is determined as a result of the detection that the eyeglass frame is being worn.

[0007] In order to solve the above-mentioned problems and achieve the object, the image projection method of the present invention is characterized by identifying the position of a user and any part of the user's body, and projecting an image transmitted or distributed to the user using the identified any part as a screen.

[0008] Moreover, in the image projection method according to the present invention, an image projection device that projects the image is moved to a position where the image can be projected onto the arbitrary portion.

[0009] In addition, the image projection method according to the present invention is characterized in that, in the above invention, the image projection device is moved by an unmanned aerial vehicle.

[0010] In addition, the image projection method according to the present invention is characterized in that, in the above invention, the image projection device is moved using indoor equipment.

[0011] Further, in the image projection method according to the present invention, in the above-mentioned invention, the indoor equipment is The image projection device is moved along at least one of the indoor facilities, such as a wall, ceiling, or floor.

[0012] In the image projection method according to the present invention, the arbitrary part of the user that becomes the screen is set by designation by the user.

[0013] In the image projection method according to the present invention, the arbitrary part of the user that becomes the screen is selected based on the content of the image.

[0014] Furthermore, in the image projection method according to the present invention, a projection method for projecting the image is changed based on a state of the arbitrary part of the user that serves as the screen.

[0015] Furthermore, the image projection method according to the present invention is characterized in that, in the above invention, the projection method for projecting the image is changed based on the surrounding situation of the arbitrary part of the user that serves as the screen.

[0016] In the image projection method according to the present invention, the situation around the arbitrary part is brightness of the surroundings.

[0017] Furthermore, in the image projection method according to the present invention, the image projected onto the screen is recognized, and the projection method is changed based on the recognized state of the image.

[0018] Furthermore, in the image projection method according to the present invention, the arbitrary part of the user that serves as the screen is a part of the user's body that is visible to the user.

[0019] In the image projection method according to the present invention, the arbitrary part of the user that serves as the screen is the user's hand or arm.

[0020] In the image projection method according to the present invention, the arbitrary part of the user that serves as the screen is a leg or a foot of the user.

[0021] In the image projection method according to the present invention, the arbitrary part of the user that serves as the screen is a fingernail or a toenail of the user.

[0022] In addition, the image projection method according to the present invention is characterized in that, in the above invention, the arbitrary part of the user that serves as the screen is a part of the user's body that can be seen by the user using a mirror.

[0023] Furthermore, in the image projection method according to the present invention, when the image is projected onto a location visible to the user using a mirror, the image is reversed left and right.

[0024] In the image projection method according to the present invention, the any part of the user that serves as the screen is the face, head, or neck of the user.

[0025] In the image projection method according to the present invention, the arbitrary part of the user that serves as the screen is the trunk or buttocks of the user.

[0026] In addition, the image projection method of the present invention is characterized by identifying the position of a user and any part of the user's body, and projecting an image sent or delivered to the user using the clothing worn at the identified part as a screen.

[0027] In the image projection method according to the present invention, the clothing includes at least one of clothing, gloves, shoes, socks, a hat, and a mask.

[0028] In addition, the image projection method of the present invention is characterized in that, in the above invention, the projection method for projecting the image is changed based on the type or state of clothing worn on the arbitrary part of the user that serves as the screen.

[0029] In addition, the image projection method of the present invention is characterized in that, in the above invention, the projection method for projecting the image is changed based on at least one of the color and material of clothing worn on the any part of the user that serves as the screen.

[0030] In order to solve the above-mentioned problems and achieve the object, the image projection device of the present invention is characterized by including a control unit that identifies the position of a user and any part of the user's body, and projects an image transmitted or distributed to the user using the identified any part as a screen.

[0031] In addition, the image projection device of the present invention is characterized by having a control unit that identifies the position of a user and any part of the user's body, and projects an image sent or distributed to the user using the clothing worn at the identified part as a screen.

[0032] In addition, the image projection device according to the present invention is characterized in that, in the above invention, the control unit moves the image projection device that projects the image to a position where the image can be projected onto the arbitrary location.

[0033] In order to solve the above-mentioned problems and achieve the objectives, the unmanned aerial vehicle of the present invention is characterized by identifying the position of a user and any part of the user's body, and using the identified part as a screen to project an image transmitted or distributed to the user.

[0034] In addition, the unmanned aerial vehicle of the present invention is characterized by identifying the position of the user and any part of the user's body, and projecting an image sent or distributed to the user using the clothing worn on the identified part as a screen.

[0035] In addition, the unmanned aerial vehicle according to the present invention is characterized in that, in the above invention, the unmanned aerial vehicle moves to a position where the image can be projected onto the arbitrary part and projects the image.

[0036] In order to solve the above-mentioned problems and achieve the objectives, the image projection program of the present invention is characterized in that it causes an image projection device to execute a process of identifying the position of a user and any part of the user's body, and projecting an image transmitted or distributed to the user using the identified part as a screen.

[0037] In addition, the image projection program of the present invention is characterized in that it identifies the position of a user and any part of the user's body, and causes an image projection device to execute a process of projecting an image sent or distributed to the user using clothing worn at the identified part as a screen.

[0038] In addition, the image projection program of the present invention is characterized in that, in the above invention, the image projection device executes a process of moving the image projection device that projects the image to a position where the image can be projected onto the arbitrary part.

[0039] In order to solve the above-mentioned problems and achieve the object, the image projection device of the present invention is characterized by having a control unit that is provided in glasses worn by a user and projects an image that is transmitted or distributed to the user, or that is pre-stored, onto any part of the user's body that the user's gaze is directed at, as a screen.

[0040] The image projection device of the present invention is characterized in that it is provided in glasses worn by a user and includes a control unit that projects an image that is transmitted or distributed to the user, or that is pre-stored, using the user's clothing on any part of the user's body at which the user's gaze is directed, as a screen.

[0041] The image projection device of the present invention is characterized in that it is provided in glasses worn by a user and includes a control unit that projects an image that is transmitted or distributed to the user, or that is pre-stored, onto the surface toward which the user's gaze is directed, as a screen.

[0042] In addition, the image projection device according to the present invention is characterized in that, in the above invention, at least one projection unit is disposed on the outer sides of the left and right lenses supported by the frame of the eyeglasses.

[0043] In addition, the image projection device according to the present invention is characterized in that, in the above invention, at least one projection unit is disposed in the frame of the eyeglasses between the left and right lenses supported by the frame.

[0044] In addition, the image projection device according to the present invention is characterized in that, in the above invention, at least one projection unit is disposed above the left and right lenses supported by the frame of the eyeglasses.

[0045] In addition, the image projection device according to the present invention is characterized in that, in the above invention, at least one projection unit is disposed below the left and right lenses supported by the frame of the eyeglasses.

[0046] In addition, the image projection device according to the present invention is characterized in that, in the above invention, a projection unit is disposed on at least one of the left and right temples of the eyeglass frame.

[0047] In addition, in the image projection device according to the present invention, the projection unit is detachably provided on a frame of glasses.

[0048] In addition, the image projection device according to the present invention is characterized in that, in the above invention, a projection unit is disposed on at least one of the left and right lenses supported by the eyeglass frame.

[0049] In addition, the image projection device according to the present invention is characterized in that, in the above invention, the images are simultaneously projected by a plurality of the projection units.

[0050] In addition, in the image projection device according to the present invention, a first projection unit and a second projection unit among the plurality of projection units simultaneously project different images.

[0051] In addition, the image projection device according to the present invention is characterized in that, in the above invention, a first projection unit and a second projection unit among the plurality of projection units simultaneously project the same image in an overlapping manner.

[0052] In addition, the image projection device according to the present invention is characterized in that, in the above invention, the image to be projected is divided into a plurality of images, and each of the plurality of projection units simultaneously projects each of the divided images.

[0053] In addition, the image projection device according to the present invention is characterized in that, in the above invention, a battery for receiving, storing, and projecting images is provided in at least one of the left and right temples of the eyeglass frame.

[0054] In addition, the image projection device of this invention is characterized in that, in the above invention, the control unit detects that the user is wearing the glasses, and projects the image when it determines as a result of the detection that the glasses are being worn.

[0055] In addition, the image projection device of this invention is characterized in that, in the above invention, the control unit recognizes that the user wearing the glasses is a pre-registered user, and projects the image if, as a result of the recognition, it is determined that the user wearing the glasses is a pre-registered user.

[0056] In addition, the image projection device of the present invention is characterized in that, in the above invention, the glasses are provided with a reception unit that receives input of at least one of ID information and password information, and the control unit recognizes that the user is a pre-registered user based on the input information.

[0057] In addition, the image projection device of this invention is characterized in that, in the above invention, the glasses are provided with a voice receiving unit that receives voice input from the user, and the control unit recognizes that the user is a pre-registered user through voice recognition based on the input voice.

[0058] In addition, the image projection device of this invention is characterized in that, in the above invention, the control unit detects that the frame of the glasses has been touched, and if the detection results in contact, starts projecting the image.

[0059] In addition, the image projection device of this invention is characterized in that, in the above invention, the control unit detects that the frame of the glasses has been touched, and if the detection shows that contact has been made, the control unit stops projecting the image.

[0060] In order to solve the above-mentioned problems and achieve the object, the image projection device of the present invention is characterized by having a control unit that is provided in earphones worn by a user and projects an image that is transmitted or distributed to the user, or that is pre-stored, onto any part of the user's body that the user's gaze is directed at, as a screen.

[0061] The image projection device according to the present invention is provided in an earphone worn by a user, The device is characterized by having a control unit that uses the clothing worn on any part of the user's body at which the user's gaze is directed as a screen to project an image that is transmitted or distributed to the user, or that is stored in advance.

[0062] The image projection device of the present invention is characterized in that it is provided in earphones worn by a user and includes a control unit that projects an image that is transmitted or distributed to the user, or that is pre-stored, onto the surface toward which the user's gaze is directed, as a screen.

[0063] In addition, the image projection device according to the present invention is characterized in that, in the above invention, the projection unit is provided detachably on the earphone.

[0064] In addition, the image projection device according to the present invention is characterized in that, in the above invention, the images are simultaneously projected by a plurality of the projection units.

[0065] In addition, in the image projection device according to the present invention, a first projection unit and a second projection unit among the plurality of projection units simultaneously project different images.

[0066] In addition, the image projection device according to the present invention is characterized in that, in the above invention, a first projection unit and a second projection unit among the plurality of projection units simultaneously project the same image in an overlapping manner.

[0067] In addition, the image projection device according to the present invention is characterized in that, in the above invention, the image to be projected is divided into a plurality of images, and each of the plurality of projection units simultaneously projects each of the divided images.

[0068] In addition, the image projection device according to the present invention is characterized in that, in the above invention, the earphone is provided with a battery for receiving, storing, and projecting images.

[0069] In addition, the image projection device of this invention is characterized in that, in the above invention, the control unit detects that the earphones are being worn by the user, and projects the image when it determines as a result of the detection that the earphones are being worn.

[0070] In addition, the image projection device of this invention is characterized in that, in the above invention, the control unit recognizes that the user wearing the earphones is a pre-registered user, and projects the image if, as a result of the recognition, it is determined that the user wearing the earphones is a pre-registered user.

[0071] In addition, the image projection device of this invention is characterized in that, in the above invention, the earphones are provided with a reception unit that receives input of at least one of ID information and password information, and the control unit recognizes that the user is a pre-registered user based on the input information.

[0072] In addition, the image projection device of this invention is characterized in that, in the above invention, the earphones are provided with a voice receiving unit that receives input of the user's voice, and the control unit recognizes that the user is a pre-registered user through voice recognition based on the input voice.

[0073] In the image projection device according to the present invention, the control unit detects that the earphones have been touched, and when the earphones have been touched as a result of the detection, the control unit controls the image projection device. The projection of the image is started.

[0074] In addition, the image projection device of this invention is characterized in that, in the above invention, the control unit detects that the earphones have been touched, and if the detection results in contact, the control unit stops projecting the image.

[0075] In order to solve the above-mentioned problems and achieve the objectives, the image projection device of the present invention is characterized in that it has a control unit that uses any part of the user's body that the user's gaze is directed at as a screen and projects an image that is transmitted or distributed to the user, or that is pre-stored, and is worn by the user on the head or over the ear.

[0076] In addition, the image projection device of the present invention is characterized in that it has a control unit that projects an image that is transmitted or distributed to the user, or that is pre-stored, using clothing worn on any part of the user's body at which the user's gaze is directed, as a screen, and is worn by the user on the head or over the ear.

[0077] In addition, the image projection device of the present invention is characterized in that it has a control unit that projects an image that is transmitted or distributed to the user, or that is pre-stored, onto the surface that the user's gaze is directed at as a screen, and is worn by the user on the head or over the ear.

[0078] In addition, the image projection device according to the present invention is characterized in that, in the above invention, the projection unit is provided detachably on the device itself.

[0079] In addition, the image projection device according to the present invention is characterized in that, in the above invention, the images are simultaneously projected by a plurality of the projection units.

[0080] In addition, in the image projection device according to the present invention, a first projection unit and a second projection unit among the plurality of projection units simultaneously project different images.

[0081] In addition, the image projection device according to the present invention is characterized in that, in the above invention, a first projection unit and a second projection unit among the plurality of projection units simultaneously project the same image in an overlapping manner.

[0082] In addition, the image projection device according to the present invention is characterized in that, in the above invention, the image to be projected is divided into a plurality of images, and each of the plurality of projection units simultaneously projects each of the divided images.

[0083] In addition, the image projection device according to the present invention is characterized in that, in the above invention, the device itself is provided with a battery for receiving, storing, and projecting images.

[0084] In addition, the image projection device of this invention is characterized in that, in the above invention, the control unit detects that the device is being worn by the user, and projects the image when it determines as a result of the detection that the device is being worn.

[0085] In addition, the image projection device of this invention is characterized in that, in the above invention, the control unit recognizes that the user wearing the device is a pre-registered user, and if, as a result of the recognition, it determines that the user wearing the device is a pre-registered user, it projects the image.

[0086] In addition, the image projection device of the present invention is characterized in that, in the above invention, the device itself is provided with a reception unit that receives input of at least one of ID information and password information, and the control unit recognizes that the user is a pre-registered user based on the input information.

[0087] In addition, the image projection device of the present invention is characterized in that, in the above invention, the device itself is provided with a voice reception unit that receives voice input from a user, and the control unit recognizes that the user is a pre-registered user through voice recognition based on the input voice.

[0088] In addition, the image projection device of this invention is characterized in that, in the above invention, the control unit detects that the device has been touched, and if the detection results in contact, starts projecting the image.

[0089] In addition, the image projection device of this invention is characterized in that, in the above invention, the control unit detects that the device has been touched, and if the detection results in contact, the control unit stops projecting the image.

[0090] In order to solve the above-mentioned problems and achieve the object, the image projection device of the present invention is characterized by having a control unit that is attached to a hat worn by a user and projects an image that is transmitted or distributed to the user, or that is pre-stored, onto any part of the user's body that the user's gaze is directed at, as a screen.

[0091] The image projection device of the present invention is characterized in that it is provided in a hat worn by a user and includes a control unit that projects an image that is transmitted or distributed to the user, or that is pre-stored, using the clothing worn on any part of the user's body at which the user's gaze is directed, as a screen.

[0092] The image projection device of the present invention is characterized in that it is provided in a hat worn by a user and includes a control unit that projects an image that is transmitted or distributed to the user, or that is pre-stored, onto the surface toward which the user's gaze is directed, as a screen.

[0093] In addition, the image projection device according to the present invention is characterized in that, in the above invention, the projection unit is detachably provided on the hat.

[0094] In addition, the image projection device according to the present invention is characterized in that, in the above invention, the images are simultaneously projected by a plurality of the projection units.

[0095] In addition, in the image projection device according to the present invention, a first projection unit and a second projection unit among the plurality of projection units simultaneously project different images.

[0096] In addition, the image projection device according to the present invention is characterized in that, in the above invention, a first projection unit and a second projection unit among the plurality of projection units simultaneously project the same image in an overlapping manner.

[0097] In addition, the image projection device according to the present invention is characterized in that, in the above invention, the image to be projected is divided into a plurality of images, and each of the plurality of projection units simultaneously projects each of the divided images.

[0098] In addition, the image projection device according to the present invention is characterized in that, in the above invention, the hat or the device itself is provided with a battery for receiving, storing, and projecting images.

[0099] In addition, the image projection device of this invention is characterized in that, in the above invention, the control unit detects that the user is wearing the hat, and projects the image when it determines as a result of the detection that the hat is being worn.

[0100] In addition, the image projection device of this invention is characterized in that, in the above invention, the control unit recognizes that the user wearing the hat is a pre-registered user, and if, as a result of the recognition, it determines that the user wearing the hat is a pre-registered user, it projects the image.

[0101] In addition, the image projection device of this invention is characterized in that, in the above invention, the hat or the device itself is provided with a reception unit that receives input of at least one of ID information and password information, and the control unit recognizes that the user is a pre-registered user based on the input information.

[0102] In addition, the image projection device of this invention is characterized in that, in the above invention, the hat or the device itself is provided with a voice reception unit that receives input of the user's voice, and the control unit recognizes that the user is a pre-registered user through voice recognition based on the input voice.

[0103] In addition, the image projection device of this invention is characterized in that, in the above invention, the control unit detects that the hat or the device itself has been touched, and if the detection results in contact, starts projecting the image.

[0104] In addition, the image projection device of this invention is characterized in that, in the above invention, the control unit detects that the hat or the device itself has been touched, and if the detection shows that contact has occurred, the control unit stops projecting the image.

[0105] In order to solve the above-mentioned problems and achieve the object, the image projection device of the present invention is characterized by having a control unit that is attached to a member that is worn around the neck of a user and that projects an image that is transmitted or distributed to the user, or that is pre-stored, onto any part of the user's body that the user's gaze is directed at, as a screen.

[0106] The image projection device of the present invention is characterized in that it is provided on a member that is worn around the neck of the user and includes a control unit that projects an image that is transmitted or distributed to the user, or that is pre-stored, using the clothing worn on any part of the user's body at which the user's gaze is directed, as a screen.

[0107] The image projection device of the present invention is characterized in that it is provided on a member that is worn around the neck of a user and includes a control unit that projects an image that is transmitted or distributed to the user, or that is pre-stored, onto a surface that the user is looking at as a screen.

[0108] In addition, the image projection device according to the present invention is characterized in that, in the above invention, the projection unit is provided detachably on the member.

[0109] In addition, the image projection device according to the present invention is characterized in that, in the above invention, the images are simultaneously projected by a plurality of the projection units.

[0110] In addition, in the image projection device according to the present invention, a first projection unit and a second projection unit among the plurality of projection units simultaneously project different images.

[0111] In addition, the image projection device according to the present invention is characterized in that, in the above invention, a first projection unit and a second projection unit among the plurality of projection units simultaneously project the same image in an overlapping manner.

[0112] In addition, the image projection device according to the present invention is characterized in that, in the above invention, the image to be projected is divided into a plurality of images, and each of the plurality of projection units simultaneously projects each of the divided images.

[0113] In addition, the image projection device according to the present invention is characterized in that, in the above invention, the member or the device itself is provided with a battery for receiving, storing, and projecting an image.

[0114] In addition, the image projection device of this invention is characterized in that, in the above invention, the control unit detects that the member is attached to the user's neck, and projects the image when it determines as a result of the detection that the member is attached.

[0115] In addition, the image projection device of this invention is characterized in that, in the above invention, the control unit recognizes that the user wearing the component is a pre-registered user, and projects the image if, as a result of the recognition, it is determined that the user wearing the component is a pre-registered user.

[0116] In addition, the image projection device of the present invention is characterized in that, in the above invention, the component or the device itself is provided with a reception unit that receives input of at least one of ID information and password information, and the control unit recognizes that the user is a pre-registered user based on the input information.

[0117] In addition, the image projection device of this invention is characterized in that, in the above invention, the component or the device itself is provided with a voice receiving unit that receives input of a user's voice, and the control unit recognizes that the user is a pre-registered user through voice recognition based on the input voice.

[0118] In addition, the image projection device of this invention is characterized in that, in the above invention, the control unit detects that the component or the device itself has been touched, and if the detection results in contact, starts projecting the image.

[0119] In addition, the image projection device of this invention is characterized in that, in the above invention, the control unit detects that the component or the device itself has been touched, and if the detection results in contact, the control unit stops projecting the image.

[0120] In addition, the image projection device according to the present invention is characterized in that, in the above invention, the member is a horseshoe-shaped neck speaker that is attached to the neck by passing the opening from behind the neck.

[0121] In addition, in the image projection device according to the present invention, the member is a loop-shaped necklace that is worn around the neck by being wrapped around the neck.

[0122] In addition, the image projection device of this invention is characterized in that, in the above invention, the member is a necklace or neck strap that is loop-shaped and is worn around the neck by wrapping it around the neck, and the control unit is arranged so as to hang from the member. [Effects of the Invention]

[0123] The image projection method, image projection device, unmanned aerial vehicle, and image projection program of the present invention have the effect of allowing a user to view image information even if they do not carry a display device such as a mobile terminal device, or even if there is no display device such as a display or screen nearby. [Brief explanation of the drawings]

[0124] [Figure 1] This is an explanatory diagram (part 1) showing an overview of the image projection method ("palmtop screen"). [Figure 2] This is an explanatory diagram (part 2) showing an overview of the image projection method ("drone projector"). [Figure 3] This is an explanatory diagram (part 3) showing an overview of the image projection method ("palmtop screen"). [Figure 4] This is an explanatory diagram (part 4) showing an overview of the image projection method ("arm-top screen"). [Figure 5] This is an explanatory diagram (part 5) showing an overview of the image projection method ("wrist-top screen"). [Figure 6] FIG. 1 is an explanatory diagram showing an example of the appearance of an image projection device ("drone projector"). [Figure 7] FIG. 1 is an explanatory diagram illustrating an example of a hardware configuration of an image projection device. [Figure 8]FIG. 2 is a block diagram illustrating an example of a functional configuration of the image projection device. [Figure 9] 10 is a flowchart illustrating an example of a processing procedure of the image projection device. [Figure 10] FIG. 10 is an explanatory diagram showing an example of an image projection device ("movable projector") according to another embodiment of the present invention and an environment in which the image projection device moves. [Figure 11] FIG. 10 is an explanatory diagram showing an example of an image projection device ("glasses projector") according to another embodiment (embodiment 2) of the present invention. [Figure 12] FIG. 10 is an explanatory diagram showing another example of an image projection device ("glasses projector") according to another embodiment (embodiment 2) of the present invention. [Figure 13] FIG. 10 is an explanatory diagram showing an example of an image projection device ("earphone projector") according to another embodiment (third embodiment) of the present invention. [Figure 14] FIG. 10 is an explanatory diagram showing an example of how an image projection device (an earphone projector) according to another embodiment (third embodiment) of the present invention is worn. [Figure 15] FIG. 10 is an explanatory diagram showing an example of an image projection device ("wearable projector") according to another embodiment (fourth embodiment) of the present invention. [Figure 16] FIG. 10 is an explanatory diagram showing an example of an image projection device ("hat projector") according to another embodiment (embodiment 5) of the present invention. [Figure 17] FIG. 10 is an explanatory diagram showing another example of an image projection device ("hat projector") according to another embodiment (embodiment 5) of the present invention. [Figure 18] FIG. 10 is an explanatory diagram showing yet another example of an image projection device ("hat projector") according to another embodiment (embodiment 5) of the present invention. [Figure 19] FIG. 10 is an explanatory diagram showing an example of an image projection device ("neck projector") according to another embodiment (sixth embodiment) of the present invention. [Figure 20]FIG. 10 is an explanatory diagram showing another example of an image projection device ("neck projector") according to another embodiment (sixth embodiment) of the present invention. [Figure 21] FIG. 10 is an explanatory diagram showing yet another example of an image projection device ("neck projector") according to another embodiment (sixth embodiment) of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0125] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an image projection method, an image projection device for realizing the image projection method, an unmanned aerial vehicle, and an image projection program according to the present invention will be described in detail below with reference to the accompanying drawings.

[0126] (Image projection method overview) 1 to 5 are explanatory diagrams showing an overview of the image projection method. In Fig. 1, image information 110 related to a video call is projected onto a user's right hand 101. Also, image information 120 related to a chat screen is projected onto a user's left hand 102.

[0127] However, the present invention is not limited to this, and image information desired by the user can be projected onto the right hand 101 and the left hand 102. For example, image information 110 relating to a video call with a different person may be projected onto both the right hand 101 and the left hand 102. In this way, an image is projected onto the palm of at least one of the user's hands. The inventor has coined the term "PALM TOP SCREEN" to refer to using the palm as a screen.

[0128] Audio accompanying image information, such as audio from the other party in a video call when an image related to a video call is projected, can be output from earphones worn by the user or a speaker installed near the user. The speaker may be mounted on the image projection device 200 shown in FIG. 2 (for example, speaker 707 shown in FIG. 7, which will be described later). The user's audio can be input (collected) from earphones worn by the user or a microphone installed near the user. The microphone may be mounted on the image projection device 200 (microphone 706 shown in FIG. 7, which will be described later).

[0129] 2 shows an image projection device 200 projecting image information 110 related to a video call onto the palm of a user 201. As shown in FIG. 2, by projecting image information 110 from the image projection device 200 onto the palm, which is an arbitrary part of the body of the user 201, the palm, which is an arbitrary part of the body of the user 201, can be used as a screen.

[0130] The image projection device 200 is a drone (unmanned aerial vehicle) equipped with a projector, which flies and stops in a predetermined space, from which it projects image information onto the palm of a user's hand, which is any part of the user's body. The inventor has named this image projection device 200 the "drone projector" (abbreviated as "dropro," "drop," or "drop").

[0131] By using the palm of your hand as a screen, you don't need a dedicated display device to view image information. By turning your palm in the right direction, you can prevent others nearby from peeking at the image information. You can also share the image information with others sitting next to or across from you by turning your palm in the wrong direction.

[0132] As shown in Figure 1, by using both hands, a user can simultaneously view at least two different screens. In order to display two different image information, two or more projectors may be mounted on one drone, or multiple drone projectors may be used to project from each. Also, as shown in Figure 2, By bringing both hands close together or touching, one image can be enlarged and displayed across both hands.

[0133] 1 and 2, these pieces of image information 110 and 120 are projected images projected onto the outstretched palms of the users 201 from the image projection device 200. In order to project the image information 110 and 120 onto the palms of the users 201 in this way, the image projection device 200 first identifies the users 201 onto whom the image information is to be projected.

[0134] Then, the position of the palm of the identified user 201 is identified, and the identified palm is used as a screen to project the transmitted image onto the user 201. This allows the user 201 to view the image information 110, 120 projected onto his or her palm.

[0135] 3, the orientation of image information 110 may be determined based on the relationship between the user's line of sight (the positions of both eyeballs) and the position of palm 101. Therefore, regardless of the direction in which the fingertips are pointing, the angle at which the user can easily view the image information may be estimated from the positions of the left and right eyeballs of user 201, and the orientation of the image information may be determined.

[0136] 3, it can be seen that the direction in which the image information 110 is projected on the palm is different from that in FIG. 1. The direction of the image information 110 changes depending on the direction in which the user 201 spreads his or her right hand 101. Therefore, even if the user 201 changes the angle of his or her hand, the direction in which the image is projected relative to the line of sight of the user 201 is always constant, thereby improving the visibility of the image information 110.

[0137] The direction in which the image information is projected may be changed (for example, by flipping the image information upside down) by instructions from the user 201, such as "make it visible to the person opposite" or by gesture. This makes it easier for not only the user 201 but also other people next to or opposite the user 201 to see the image information.

[0138] If the angle of the palm is changed or the position of the palm is moved, image projection device 200 recognizes the change and follows the change in the angle or position of the palm so that it can continue to project image information onto the palm. Therefore, until user 201 gives an instruction to end the projection, image information can be continuously projected onto the palm, just as if it were displayed on a display device, for example.

[0139] The dimensions of the image information may be determined based on the size, shape, etc. of the palm of user 201. The dimensions of the image information when projected onto the palm may be determined in advance for each user 201. This ensures that image information of the same dimensions is always displayed on the palm, reducing the sense of discomfort felt by user 201 each time he or she views the image information.

[0140] The size of the image information may be changed by an instruction from the user 201. The instruction from the user 201 to change the size may be a voice instruction (for example, saying "make it bigger" or "make it smaller") or a gesture (for example, pointing to a desired size with a finger).

[0141] The voice may be collected by a microphone 706 mounted on the image projection device 200 or the like, and the instruction of the user 201 may be determined by voice recognition or the like. The gesture may be photographed by a camera (camera 603 shown in FIGS. 6 and 7, which will be described later) mounted on the image projection device 200 or the like, and the instruction of the user 201 may be determined by image recognition or the like.

[0142] The notification of image reception is made by a chime, an alarm, a voice message ("You have received a message from Mr. / Ms. XX"), etc. The voice message can be output to a speaker 707 shown in Fig. 7 (to be described later) or to the user's earphones.

[0143] The notification of image reception may be made by emitting light or vibrating a personal item, etc. Furthermore, the notification may be made by the drone projector 200 flying in front of the user 201.

[0144] When notified of image reception, user 201 gives an instruction to start projection. The instruction to start projection can be given, for example, by speaking (such as "display it") or by a predetermined gesture. Next, user 201 gives an instruction for the projection position. The instruction for the projection position can be given, for example, by speaking (such as "the back of my left hand") or by a gesture (opening the palm of one's hand with the palm facing up, making a gesture as if looking at a watch, pointing to the desired position with a finger, etc.).

[0145] The instruction to start projection and the instruction to specify the projection position may be a series of actions (for example, saying "display it on the thigh of my left leg" and pointing to the left arm with the index finger of the right hand). In this way, the intention of the user 201 can be confirmed.

[0146] Fig. 4 shows an example of projection onto a body part of user 201 other than the palm. As shown in Fig. 4, depending on the display format of the image information to be displayed, the image information may be displayed continuously from near the wrist of the left hand along the arm toward the shoulder. The inventor has named this use of the arm as a screen "arm top screen."

[0147] In Fig. 4, the arm-top screen 400 displays map information as an example of image information. In this way, it is possible to display a relatively large image by utilizing the length of the arm, realizing a navigation function that is easier to understand. In addition to map information, the arm-top screen 400 can also project a vertically long image, such as a long chat screen (with more chats), by extending the arm.

[0148] (Example of a body part onto which image information is projected) The body part onto which the image information is projected may be any body part that is visible to the user 201. The body part onto which the image information is projected may be the hand or arm of the user 201. However, the hand is not limited to the palm. It may not be limited to the palm, and specifically may be, for example, the back of the hand (not shown). The inventor has named the use of a part other than the palm, such as the back of the hand, as a screen a "HAND TOP SCREEN."

[0149] Furthermore, the body part onto which image information is projected may be, for example, a finger. The inventor has coined the term "finger top screen" to refer to the use of a finger as a screen. The part of the finger onto which image information is projected may be the palm side, the back of the hand, or both, or the part between the palm side and the back of the hand.

[0150] Furthermore, text information such as a message of, for example, one to three lines can be displayed on each finger along its length. Different text information can be displayed on each finger, or consecutive text information can be displayed on each finger.

[0151] Another example of a "fingertop screen" is a "nailtop screen" that uses a fingernail as a screen. By using a nail, which is harder and shinier than skin, as a screen, an image can be projected more clearly.

[0152] By determining in advance which fingernail the image information is to be projected onto depending on the recipient, the recipient can be instantly and intuitively grasped (e.g., the thumbnail on the right hand represents person A, and the middle fingernail on the left hand represents person B). It is also possible to determine in advance which fingernail the image information is to be projected onto based on its content. For example, an emergency message could be projected onto the thumbnail on the right hand.

[0153] Another example of the user's hand or arm, which is a body part onto which image information is projected, is the wrist, as shown in Fig. 5. The inventors have named the use of the wrist as a screen a "WRIST TOP SCREEN."

[0154] As shown in Fig. 5, the wrist-top screen 500 projects image information at approximately the same position as the display position of a wristwatch. Therefore, the user can view the wrist-top screen 500 with the same sensation as viewing the display of a wristwatch. The wrist-top screen 500 may be located on the back of the hand as shown in Fig. 5, or on the opposite side. It may be the wrist on the palm side, or the wrist portion between the back side and the palm side of the hand.

[0155] The body part onto which the image information is projected may be the legs or feet of the user 201. For example, when the user 201 is sitting, the projected image can be easily viewed by using the legs or feet as a screen.

[0156] Specifically, it may be a "lap top screen" (the knees, or the legs from the knees to the hip joints when sitting on a chair), a "leg top screen" (the entire legs, such as the calves when legs are crossed), or a "foot top screen" (the instep, sole, toes, etc.). The ankle is included in either the "leg top screen" or the "foot top screen."

[0157] The legs or feet have a relatively large screen area compared to the hands or arms, allowing for a larger image to be projected, and by using the legs or feet as a screen together with the hands or arms, more image information can be seen.

[0158] Similarly to fingernails, an example of a "foot top screen" may include a "nail top screen" that uses a toenail as a screen.

[0159] Furthermore, the body part onto which the image information is projected may be a body part that is normally difficult to see, but can be seen by using a mirror or the like.

[0160] For example, it may be the user's own face ("FACE TOP SCREEN", especially the cheeks), head ("HEAD TOP SCREEN", especially the forehead or hairy area), neck ("NECK TOP SCREEN"), or shoulders ("SHOULDER TOP SCREEN"). All of these names were coined by the inventor.

[0161] The body parts onto which image information is projected include the trunk, such as the back ("BACK TOP SCREEN") and abdomen ("ABD TOP SCREEN"), as well as the buttocks ("HIP TOP SCREEN"). These names were also given by the inventors.

[0162] When using a mirror, it is possible to project image information that has been mirror-inverted (reversing the left and right sides of the image). The nose and ears are included in the "face-top screen."

[0163] In particular, by using a mirror to project an image onto the user's 201 own face ("face top screen"), neck ("neck top screen"), shoulders ("shoulder top screen"), or head ("head top screen"), the image information can be checked while, for example, applying makeup, washing, or getting a haircut.

[0164] Furthermore, in the case of the trunk or buttocks, the user 201 can check the image information while looking at his or her entire body in a mirror.

[0165] As an application of these, image information can be images of makeup, clothing, accessories (such as glasses), ornaments (such as necklaces), and tattoos. These image information can be projected directly onto the body parts of the user 201, allowing them to enjoy virtual makeup and trying on clothes.

[0166] It can also be used during surgery, for example, by displaying the location of an affected area at the corresponding position on the body.It can also be used as a diet goal by projecting an ideal body shape directly onto the body.

[0167] In this way, by using each part of the user's body as a screen, a dedicated device such as a screen is not required to view the image.Furthermore, the user does not need to carry an information terminal device with a display screen (so-called "empty-handed" viewing is sufficient).

[0168] The part of the body on which the image information is to be projected is selected by the user's instruction, which may be voice (for example, saying "display on the back of my right hand" or "on the wrist of my left hand") or gesture (for example, pointing to the desired location).

[0169] Furthermore, the body part onto which the image information is projected may be selected depending on the type of image information. For example, highly confidential information may be displayed on the palm of the hand, and the image content may be prevented from being seen by nearby people by adjusting the orientation and angle of the palm, the distance from the face, etc.

[0170] Alternatively, the body part may be selected based on the user's posture. When sitting on a chair, the image can be projected onto the knees or legs. When holding an object in one hand or working with one hand, the image can be projected onto the other hand or other body part.

[0171] The image information may be projected directly onto the skin of the user's body part, or may be projected onto the clothing (clothing) if the user is wearing clothes. Clothing includes not only clothes but also relatively easy-to-put-on and -take-off items such as hats, gloves, shoes, socks, masks, scarves, and stoles.

[0172] The projection method (color, brightness, etc.) can be changed depending on whether it is projected onto skin or clothing. It can also be changed depending on the type of clothing (material, color, etc.). These differences can be determined by analyzing images captured by a camera installed in the image projection device.

[0173] (An example of the appearance of the image projection device 200) Next, an example of the appearance of an image projection device according to an embodiment of the present invention will be described. Fig. 6 is an explanatory diagram showing an example of the appearance of an image projection device. As shown in Fig. 6, the image projection device (drone projector) 200 includes a projector (projection unit) 601, a drone (unmanned aerial vehicle) 602, a camera 603, and a motion sensor 604. That is, the projector 601, the camera 603, and the motion sensor 604 are mounted on the drone 602.

[0174] The projector 601 includes a projector light source, an optical system, a projection lens, etc. (all of which are not shown in the figure). The projector 601 guides light emitted from the projector light source along a predetermined path using the optical system and irradiates the light outside the projector 601 via the projection lens 601a, thereby projecting an image at the location where the light is irradiated.

[0175] The optical system is composed of an integrator lens that increases the uniformity of the illuminance of the light emitted from the projector light source, a polarization conversion element that converts (polarizes) the light emitted from the non-polarized light source into a specified polarization direction, a dichroic mirror that separates the light from the projector into the three primary colors of R, G, and B, an LCD panel that displays an image corresponding to the light of each color of R, G, and B, and a dichroic prism that combines the images of each color displayed by each LCD panel (all of which are not shown in the figure).

[0176] For example, a laser projector that uses a laser as a projector light source can be used as the projector 601. By using a laser projector, the projector 601 can be made smaller.

[0177] Specifically, laser projectors generate less heat than mercury lamp projectors that use a mercury lamp as the projector light source, and therefore can be made smaller and lighter by eliminating mechanisms such as cooling fans.

[0178] Furthermore, by using a laser projector, it is possible to quickly start up and start projecting an image, and by using a laser projector, it is possible to achieve higher brightness of the projected image while reducing power consumption compared to a mercury lamp projector.

[0179] Mercury lamp projectors are recommended to be used with the projection (optical axis) direction horizontal, which limits the degree of freedom in projection direction, whereas laser projectors can be used with the optical axis tilted from the horizontal.This allows laser projectors to have a high degree of freedom in projection direction, and they can project images not only onto walls but also onto the ground and floor.

[0180] The drone 602 moves the projector 601. By moving the projector 601 using the drone 602, which is called an unmanned aerial vehicle or the like, the projection location of the image by the projector 601 can be moved.

[0181] Specifically, the drone 602 is, for example, a quadcopter with four propellers 605. The drone 602 is not limited to a quadcopter, and various types of multicopters such as a hexacopter with six propellers and an octocopter with eight propellers can be used.

[0182] The projector 601 is fixed to the drone 602 and moves along with the movement (flight) of the drone 602. The projector 601 may be connected to the drone 602 in a state in which its attitude can be adjusted.

[0183] Specifically, for example, the projector 601 can be connected to the bottom of the drone 602 via a universal joint such as a ball joint. By connecting the projector 601 to the drone 602 via a universal joint such as a ball joint, a high degree of freedom in adjusting the attitude of the projector 601 can be ensured.

[0184] In this case, the image projection device 200 may include a drive mechanism that changes the attitude of the projector 601 relative to the drone 602 in order to adjust the attitude of the projector 601 relative to the drone 602 without human intervention.

[0185] The drive mechanism can be configured, for example, by a motor, a gear train, etc. By making the attitude of the projector 601 relative to the drone 602 adjustable, it is possible to project an image at an optimal angle depending on the location where the image is to be projected.

[0186] The camera 603 captures an image of the user 201 shown in FIG. 2. The camera 603 also captures an image projected by the projector 601. Specifically, the camera 603 can be realized by, for example, a general-purpose digital camera. The camera 603 is fixed to the drone 602 with, for example, a lens 603a facing in the same direction as the image projection direction by the projector 601.

[0187] The camera 603 may be connected to the drone 602 in a state where the direction in which the lens is pointed can be adjusted relative to the projection direction of the image by the projector 601. In FIG. 6, the camera 603 can be rotated around an axis connecting the camera 603 to the drone 602.

[0188] The camera 603 may be connected to the bottom of the drone 602 via a universal joint such as a ball joint. By connecting the camera 603 to the drone 602 via a universal joint such as a ball joint, a high degree of freedom in adjusting the attitude of the camera 603 can be ensured.

[0189] In this case, the image projection device 200 may include a drive mechanism that changes the attitude of the camera 603 relative to the drone 602 in order to adjust the direction in which the lens 603a is pointed without human intervention. The drive mechanism can be configured, for example, by a motor, a gear train, or the like.

[0190] By making it possible to adjust the direction in which the lens 603a is pointed relative to the projection direction of the image by the projector 601, it is possible to use a single camera 603 to capture the image projected by the projector 601 and to capture images of the surroundings of the image projection device 200.

[0191] In the image projection device 200, the drive mechanism that adjusts the attitude of the projector 601 relative to the drone 602 and the drive mechanism that adjusts the attitude of the camera 603 relative to the drone 602 may operate independently. While projecting an image, the projected image can be captured by the camera 603. Furthermore, the attitude of the camera 603 can be adjusted to capture an image in a direction different from the projection direction of the image.

[0192] The camera 603 is not limited to a general-purpose digital camera, but may be realized by, for example, a night vision camera that takes pictures in dark places by amplifying its sensitivity to light, or an infrared camera that is sensitive to infrared light.

[0193] By installing such a camera 603, it is possible to clearly capture images of the user, any part of the user, and the image projected by the projector 601, even at night, without using a light source for auxiliary imaging. This makes it possible to suppress increases in the weight and power consumption of the image projection device 200.

[0194] The human presence sensor 604 detects a user present within a predetermined range from the image projection device 200. The user is a visual target of the image projected by the image projection device 200. Specifically, the human presence sensor 604 can be realized by, for example, an infrared sensor.

[0195] The infrared sensor detects the temperature rise (temperature change) caused by the absorption of infrared rays emitted by a detected object such as a user by a light-receiving element using a temperature sensor, and outputs a predetermined electrical signal. By using the infrared sensor, it is possible to detect the presence or absence of a viewer and the movement of that viewer.

[0196] The user detection range of the human presence sensor 604, which is realized by an infrared sensor, can be adjusted, for example, by adjusting the sensitivity of the infrared sensor, the number and arrangement of the sensor elements (pixels), the amplification factor of the current sensed by the sensor elements (pixels), etc.

[0197] The human presence sensor 604 is not limited to being realized by an infrared sensor, but may be one that detects the user 201 using, for example, ultrasound or visible light, or one that detects the user 201 using a method that combines infrared and ultrasound.

[0198] In this way, the image projection device 200 is a drone projector that can move in space by flying indoors or outdoors. This drone projector may be a drone projector for personal use, or may be a public drone projector shared by multiple users.

[0199] (Hardware configuration of image projection device 200) Next, a description will be given of the hardware configuration of the image projection device 200. FIG.

[0200] 7, the hardware of the image projection device 200 includes a battery 701, a control circuit 702, a communication I / F 703, a GPS receiver 704, a motor 705, a projector 601, a camera 603, a motion sensor 604, a microphone 706, and a speaker 707. The units 601, 603, 604, and 701 to 707 included in the image projection device 200 are connected by a bus 700.

[0201] The battery 701 supplies power required for the operation of each unit included in the image projection device 200. The battery 701 can be realized by, for example, a secondary battery (rechargeable battery, storage battery) such as a lithium battery. The battery 701 realized by a secondary battery may be detachable from the drone 602.

[0202] Furthermore, the image projection device 200 may include a charging contact for charging the battery 701. The charging contact may have, for example, an exposed terminal shape or a connector shape.

[0203] The image projection device 200 may include a power receiving coil for wireless power transfer (contactless power transmission) instead of or in addition to the charging contact for charging the battery 701.

[0204] Wireless power supply is a technology for receiving power from the battery 701 without using a charging contact, and is also called contactless power supply or wireless power supply. The power receiving coil is provided inside the exterior surface of the drone 602. This makes it possible to prevent deterioration or failure of the image projection device 200 due to water droplets from rain or dew. The battery 701 may be realized by a primary battery that only discharges DC power.

[0205] Control circuit 702 is configured with a CPU, memory, etc., and drives and controls each unit of image projection device 200. The CPU executes programs stored in the memory to control the entire image projection device 200. The memory stores the programs executed by the CPU. The memory also stores various information including, for example, image information related to the image to be projected.

[0206] Specifically, the memory can be realized by, for example, an IC memory, an SSD (Solid State Drive), etc. Furthermore, the memory may be a memory card that is detachable from the image projection device 200 via a card slot provided in the image projection device 200.

[0207] The memory card can be realized by an IC card such as an SD (Secure Digital) memory card, etc. The memory may be realized by an external hard disk, USB memory, etc.

[0208] Specifically, the control circuit 702 includes, for example, a flight controller and an ESC (Electronic Speed ​​Controller). The control circuit 702 may further include a BEC (Battery Elimination Circuit) and a UBEC (Universal BEC). In addition, when the battery 701 is realized by a secondary battery, the control circuit 702 may include a charging circuit that charges (stores) the battery 701.

[0209] The flight controller performs calculations related to the rotation control of the motor 705 and outputs a control signal. The ESC controls the rotation of the motor 705 based on the control signal output from the flight controller. While the image projection device 200 is flying, the flight controller detects the tilt of the image projection device 200 and performs calculations repeatedly, and recursively outputs a control signal to the motor 705.

[0210] The flight controller outputs a control signal to the ESC to control the rotation direction and rotation speed of the propeller (propeller motor 705). Specifically, for example, the flight controller prevents the image projection device 200 from rotating by outputting a control signal that controls adjacent propellers to rotate in opposite directions.

[0211] Also, for example, the image projection device 200 is moved forward by controlling the propeller at the front in the traveling direction to rotate slower than the propeller at the rear in the traveling direction. The image projection device 200 is turned to the right by controlling the propeller on the right side in the direction of travel so as to rotate slower than the propeller on the left side in the direction of travel.

[0212] Furthermore, the control circuit 702 specifically includes, for example, a GPU (Graphics Processing Unit) that is specialized for image processing related to images projected by the projector 601. By including a GPU, it is possible to project fast-moving videos and the like with high image quality.

[0213] The communication I / F 703 is an interface that connects the image projection device 200 and the network N via a communication line, and controls the interface between the network N and the inside of the image projection device 200, and controls the input of data from and the output of data to external devices connected via the network N. The network N is realized by, for example, the Internet, a LAN (Local Area Network), a WAN (Wide Area Network), or the like.

[0214] The communication I / F 703 is, for example, a wireless interface based on Wi-Fi (registered trademark). The communication I / F 703 may also be connected to a mobile phone line (for example, LTE (Long Term It may also be an interface for wireless communication such as a Personal Handy-phone System (PHS) or a Personal Handy-phone System (PHS).

[0215] The control circuit 702 can acquire various types of information, including image information related to an image to be projected, from the external device by communicating with the external device via the communication I / F 703. Furthermore, every time the control circuit 702 acquires various types of information from the external device, it may store the acquired information in memory or update the contents of the memory based on the acquired information.

[0216] The GPS receiver 704 identifies the current position of the image projection device 200. Specifically, the GPS receiver 704 includes, for example, a GPS antenna, an RF (Radio Frequency) unit, and a baseband unit. The GPS antenna receives radio waves broadcast by GPS satellites. The RF unit demodulates the pre-modulation signal received by the GPS antenna into a baseband signal. The baseband unit calculates the current position of the image projection device 200 based on the baseband signal demodulated by the RF unit.

[0217] The GPS receiver 704 may further include a filter for removing unnecessary components, and an amplifier such as an LNA (Low Noise Amplifier) ​​or a PA (Power Amplifier).

[0218] The current position of the image projection device 200 can be determined by positioning based on radio waves transmitted from multiple GPS satellites. The baseband unit calculates the distances to each of the four GPS satellites and calculates the position where the distances intersect. Instead of GPS, which determines the geometric position of the GPS satellite and the image projection device 200 based on radio waves received from the GPS satellite, the current position of the image projection device 200 may be determined using a satellite positioning system such as Michibiki, GLONASS, or Galileo.

[0219] The motor 705 is controlled by the control circuit 702, and rotates to rotate the propellers 605. Specifically, for example, a brushless motor in which the rotor is a permanent magnet and the stator is made up of a coil can be used as the motor 705. The same number of motors 705 as the number of propellers 605 can be provided. This allows each propeller 605 to rotate independently, and causes the image projection device 200 to move forward or backward. It can also be rotated left and right.

[0220] When drive mechanisms for adjusting the attitudes of the projector 601 and the camera 603 are provided, the control circuit 702 also controls the operation of the motors 705 provided in each of these drive mechanisms. This allows the attitudes of the projector 601 and the camera 603 to be adjusted independently (individually) while the image projection device 200 is moving.

[0221] As described above, the projector 601 projects an image at a location where the light is irradiated by guiding the light emitted from the projector light source to a predetermined path using an optical system and irradiating the light outside the projector 601 through the projection lens 601a. ​​The projector 601 may adjust the image quality of the projected image by adjusting the intensity of the light emitted from the projector light source according to the distance from the position where the image is to be projected.

[0222] The distance between the projector 601 and the position where the image is projected can be determined using, for example, a distance sensor. The distance sensor can be any of various known sensors, such as a laser distance sensor, an ultrasonic sensor, or an infrared sensor.

[0223] The camera 603 includes an image sensor, and generates image information (photographed data) by converting light received by the image sensor through a photographing lens into an electrical signal. The generated image information is output to the control circuit 702. The camera 603 may be one that captures still images or video.

[0224] Video includes continuous playback of still images taken at predetermined time intervals. Image information may be compressed using a predetermined video / audio data compression standard (e.g., MPEG (Moving Picture Experts Group)).

[0225] The human presence sensor 604 outputs an electrical signal corresponding to a temperature change caused by the light receiving element absorbing infrared rays to the control circuit 702. Specifically, the human presence sensor 604 converts a current signal corresponding to the temperature change into a voltage signal, amplifies the voltage signal, and outputs a predetermined electrical signal to the control circuit 702 when the amplified voltage signal exceeds a predetermined threshold. The control circuit 702 detects the user 201 when it receives an input of the predetermined electrical signal output from the human presence sensor 604.

[0226] The microphone 706 collects sound around the image projection device 200. The microphone 706 converts sound input as analog data into an electrical signal. Specifically, the microphone 706 performs analog-to-digital conversion on the analog sound signal input as analog data, and generates digital sound data.

[0227] Speaker 707 generates sound by vibrating a diaphragm with an electric signal, which is an audio signal. Speaker 707 may also be an output terminal that outputs an audio signal, and an external speaker may be connected to the output terminal to generate sound.

[0228] Although not shown, the image projection device 200 may also include an LED lamp that indicates the state of the image projection device 200, and an input / output device such as a key or button that inputs instructions to the image projection device 200. The input / output device may be realized by a connection terminal to which another information processing device can be connected.

[0229] The image projection device 200 may also include a memory card I / F, which is an interface connected to the image projection device 200 via a card slot. It is in charge of the interface between the memory card and the internal components, and controls the input and output of data from and to the memory card.

[0230] This allows the image to be projected by the image projection device 200 to be stored in a memory card, and the image to be projected by the image projection device 200 to be switched simply by replacing the memory card.

[0231] (An example of a functional configuration of the image projection device 200) Next, a description will be given of an example of the functional configuration of the image projection device 200. FIG.

[0232] 8, the functions of image projection device 200 according to the embodiment of the present invention are realized by a user instruction receiving unit 801, a projection target user identifying unit 802, a body part information acquiring unit 803, a projection image information acquiring unit 804, a body part identifying unit 805, a projection position and projection dimension determining unit 806, a warning output unit 807, a movement position and projection angle determining unit 808, a movement and projection angle control unit 809, an image information projecting unit 810, a projection image capturing unit 811, and an instruction output unit 812. Therefore, the functions of the control unit of image projection device 200 can be realized by these components 801 to 812.

[0233] The user instruction accepting unit 801 accepts an instruction to project image information for the user 201. Then, the accepted projection instruction is output to the projection target user identifying unit 802. Specifically, the user instruction accepting unit 801 can realize its functions using, for example, the camera 603 and microphone 706 shown in FIGS. 6 and 7, the control circuit 702 and communication I / F 703 shown in FIG. 7, etc. The user instruction accepting unit 801 can accept an instruction to end projection. The accepted instruction to end projection is output to the image information projection unit 810.

[0234] Furthermore, the user instruction receiving unit 801 can receive various operation instructions for the projected image information. The received various instructions can be output (transmitted) to the outside from the instruction output unit 812. Note that all or part of the various instructions from the user may be transmitted directly to the outside without going through the image projection device 200.

[0235] The projection target user identification unit 802 identifies a projection target user who has received a projection instruction from the user instruction receiving unit 801. Specifically, the projection target user identification unit 802 can realize its functions using, for example, the camera 603, microphone 706, control circuit 702, and communication I / F 703 shown in Fig. 7. The projection target user identification unit 802 identifies a projection target user as follows.

[0236] In the case of a user-dedicated image projection device 200, user information (ID information transmitted by the user or information identified from the user's physical characteristics) is stored in advance, and the user's current location is identified based on this information. The user's location is grasped at regular time intervals. If the user moves, the location is captured.

[0237] In the case of a shared image projection device, user information is received and, based on that information, a search is made for the corresponding user 201. The search for the user 201 may be made based on, for example, location information of the user 201 calculated based on a user ID signal transmitted by the user 201. Alternatively, the search for the user 201 may be made by analyzing an image captured by the camera 603 based on information related to the morphological characteristics of the user 201, thereby identifying the corresponding user 201.

[0238] If the current location of the user 201 can be found, the current location of the user 201 is identified. If the user 201 moves, the location is captured.

[0239] The projection target user identification unit 802 outputs information about the identified projection target user 201, specifically, the position information of the user, to the body part identification unit 805.

[0240] Body part information acquisition unit 803 acquires information about the body part that will become the screen onto which image information is projected. Specifically, the functions of body part information acquisition unit 803 can be realized by, for example, camera 603, microphone 706, and communication I / F 703 shown in FIG.

[0241] When a body part is designated by the user 201, the body part information acquisition unit 803 acquires the designated information using the camera 603, the microphone 706, the communication I / F 703, etc. The body part information acquisition unit 803 outputs the acquired body part information to the body part identification unit 805.

[0242] The projection image information acquisition unit 804 acquires information about the image to be projected. Specifically, the function of the projection image information acquisition unit 804 can be realized by, for example, the communication I / F 703 shown in Fig. 7. The projection image information may be a still image or a video.

[0243] The acquired image information also includes information about the content (profile) of the image. Specifically, this information includes the type of image (chat, video call, etc.), the resolution of the image, and the amount of data. The projection image information acquisition unit 804 outputs the acquired image information to the image information projection unit 810. Furthermore, the projection image information acquisition unit 804 outputs information about the content of the image from the acquired image information to the body part identification unit 805 and the projection position / projection dimension determination unit 806.

[0244] The body part identification unit 805 identifies information about the projection target user identified by the projection target user identification unit 802, information about the body part acquired by the body part information acquisition unit 803, and the body part that will serve as the screen onto which image information will be projected.

[0245] Furthermore, a body part may be identified based on information about the content of the image acquired by the projection image information acquisition unit 804. For example, if the image is relatively large, even if the user 201 has designated the palm of his / her hand, it can be changed to the arm. In this case, the user can also be notified (projected) that the designated body part will be changed.

[0246] Specifically, the body part identification unit 805 can realize its functions using, for example, the camera 603 shown in FIGS. 6 and 7, the human sensor 604, the control circuit 702 shown in FIG.

[0247] Specifically, body part identification unit 805 identifies the body part as follows. If the body part is the palm, when an instruction to project image information is received, first, the position of the user's palm, whose position is known, is identified. The position is identified by analyzing the image captured by camera 603 mounted on image projection device 200.

[0248] Alternatively, instead of or as a supplement to a camera, a human presence sensor 604 such as an infrared sensor may be used to identify the position. Specifically, the direction and posture of the user are identified from the positions of each part of the user's body, such as the head, shoulders, and arms, and the position of the user's palms is estimated.

[0249] The position of the palm is then determined based on the shape of the palm. Furthermore, the physical characteristics of the palm (finger length, fingerprints, palm lines, veins, etc.) are used to determine whether the palm belongs to the user. may be authenticated.

[0250] In this way, the body part identification unit 805 identifies the body part (palm). Other body parts can be identified based on their respective characteristics. The body part identification unit 805 outputs information about the identified body parts to the projection position / projection dimension determination unit 806.

[0251] The projection position and projection size determination unit 806 determines the projection position at which the image information is to be projected and the size of the projection image based on the body part identified by the body part identification unit 805. Furthermore, the projection position and projection size determination unit 806 may refer to the content of the image information acquired by the projection image information acquisition unit 804 and determine the projection position at which the image information is to be projected and the size of the projection image based on the content.

[0252] Specifically, the function of the projection position / projection dimension determining unit 806 can be realized by, for example, the control circuit 702 shown in FIG.

[0253] Specifically, the projection position / projection dimension determination unit 806 may determine the projection position and projection direction from the direction of the fingers, the angle of the wrist, etc., based on information regarding the position of the palm of the user 201 that is placed on the body part identified by the body part identification unit 805.

[0254] In addition, the size of the palm of the user 201 that is placed on the body part identified by the body part identification unit 805 may be determined from information about the palm of the hand, and the dimensions of the image information to be projected may be determined so that the image fits on the palm.

[0255] Furthermore, the projection position and projection dimension determination unit 806 may change the projection method for projecting the image based on the state of the body part identified by the body part identification unit 805. Specifically, the state of the body part may be, for example, wearing gloves. The projection position and projection dimension determination unit 806 outputs information relating to the determined projection position, projection dimension, etc. to the movement position and projection angle determination unit 808.

[0256] Furthermore, if the projection position / projection dimension determination unit 806 determines that projection onto the palm is not possible based on the direction of the fingers, the angle of the wrist, etc., it outputs to the warning output unit 807 information indicating that projection is not possible and information urging the user to change the position of the palm.

[0257] When the projection position and projection dimension determination unit 806 determines the projection position and projection dimension, if projection is not possible on the body part identified by the body part identification unit 805, the warning output unit 807 outputs a warning to that effect and to prompt the user to move the position of the user or the position of the body part. Specifically, the function of the warning output unit 807 can be realized by, for example, the communication I / F 703, the speaker 707, etc. shown in FIG. 7.

[0258] The movement position and projection angle determination unit 808 determines at least one of the movement position of the image projection device 200 and the projection angle of the image projection device 200 based on the projection position and projection dimension determined by the projection position and projection dimension determination unit 806. Specifically, the movement position and projection angle determination unit 808 calculates latitude and longitude information of the position to which the image projection device 200 is moved and the projection angle of the projector 601, and outputs the calculation result to the movement and projection angle control unit 809.

[0259] Specifically, the function of the movement position / projection angle determination unit 808 can be realized by, for example, the control circuit 702 shown in FIG.

[0260] The movement and projection angle control unit 809 controls the motor 705 to move the image projection device 200 based on the movement position of the image projection device 200 determined by the movement position and projection angle determination unit 808. Furthermore, the projection angle of the image projection device 200 is adjusted based on the movement position of the image projection device 200 determined by the movement position / projection angle determination unit 808.

[0261] Specifically, the movement and projection angle control unit 809 can realize its functions using, for example, the control circuit 702, the GPS receiver 704, the motor 705, and the like shown in FIG.

[0262] The image information projection unit 810 projects the image information acquired by the projection image information acquisition unit 804 onto the identified body part as a screen. Furthermore, the image information projection unit 810 may stop the projection of the image information in response to an instruction to end the projection received by the user instruction reception unit 801.

[0263] Specifically, the image information projection unit 810 can be realized by, for example, the projector 601 shown in FIGS. 6 and 7, the control circuit 702 shown in FIG.

[0264] The projection image capturing unit 811 captures an image projected using an arbitrary body part as a screen, or captures or acquires information about the surroundings of the image. The projection image capturing unit 811 outputs information about the surroundings of the captured image or the acquired image to the projection position and projection dimension determination unit 806.

[0265] Specifically, the functions of the projection image capturing unit 811 can be realized by the camera 603 and the motion sensor 604 shown in FIGS.

[0266] The projection position / projection dimension determination unit 806 may change the projection method for projecting the image based on the acquired surrounding conditions of the arbitrary part, and output information related to the changed projection method to the image information projection unit 810. Specifically, the surrounding conditions of the arbitrary part may be the brightness of the surroundings. If the surroundings are relatively bright, the illuminance of the projected image may be increased. On the other hand, if the surroundings are relatively dark, such as at night, the illuminance of the projected image may be decreased.

[0267] The projection position and projection dimension determination unit 806 may recognize (analyze) the image captured by the projection image capturing unit 811 and change the projection method based on the status of the recognized image. Specifically, if the image quality of the projected image has deteriorated or if the user 201 has difficulty viewing the image, the projection position, projection dimension, etc. may be changed to improve visibility. Information related to the changed projection method may then be output to the image information projection unit 810.

[0268] The instruction output unit 812 outputs information relating to an instruction from the user 201 with respect to the projected image information, which is received by the user instruction receiving unit 801. Specifically, the function of the instruction output unit 812 can be realized by, for example, the communication I / F 703 shown in FIG. 7. The information relating to the instruction may also be transmitted to each component via the bus 700.

[0269] (Example of processing procedure of image projection device 200) Next, a description will be given of an example of a processing procedure of the image projection device 200. Fig. 9 is a flowchart showing an example of a processing procedure of the image projection device 200. In the flowchart of Fig. 9, the image projection device 200 first identifies the current position of the projection target user onto whom image information is to be projected (step S901).

[0270] Next, information on the body part to which image information is to be projected is acquired from the identified body parts of the projection target user (step S902). Based on the position and orientation of the body part to be projected, the current position and orientation of the body part to be projected is identified (step S903). Then, based on the identified position and orientation of the body part, it is determined whether or not it is possible to project image information onto the body part at that position and orientation (step S904).

[0271] If it is determined in step S904 that projection is not possible (step S904: No), a warning to that effect is issued to the projection target user (step S905). This prompts the projection target user to move or change the position or orientation of a body part. Thereafter, the process returns to step S901, and the processes of steps S901 to S905 are repeated.

[0272] If it is determined in step S904 that projection is possible (step S904: Yes), the projection position and projection size of the image information to be projected are determined (step S906). Then, based on the determined projection position and projection size of the image information, the projection position of image projection device 200 is determined (step S907).

[0273] Next, the image projection device (own device) 200 is moved to the determined projection position and the projection angle is adjusted (step S908). After the movement and adjustment are completed, the image information is projected using the (identified) body part as a screen (step S909).

[0274] Thereafter, it is determined whether the position and orientation of the body part to be projected has changed (step S910). Whether the position and orientation of the body part to be projected has changed can be determined, for example, by performing identification by body part identification unit 805 shown in Fig. 8 every predetermined time period (for example, 0.5 seconds), and based on the difference between the information relating to the position of the body part identified last time (for example, 0.5 seconds ago).

[0275] If it is determined that the position and orientation of the body part to be projected has changed (step S910: Yes), the process returns to step S903, the position and orientation of the body part to be projected are identified again (step S903), and the process from step S904 onwards is then performed.

[0276] If it is determined in step S910 that the position and orientation of the body part to be projected have not changed (step S910: No), it is then determined whether the body part to be projected has changed (step S911). Whether the body part to be projected has changed can be determined, for example, based on the information acquired by body part information acquisition unit 803 shown in FIG. 8.

[0277] If the body part to be projected has changed (step S911: Yes), the process returns to step S902, and information on the body part to be projected with image information is acquired again (step S902), and the processes from step S903 onward are then performed.

[0278] In step S911, if the body part to be projected has not changed (step S911: No), it is next determined whether the projection target user has moved (step S912). Whether the projection target user has moved can be determined, for example, by performing identification by the projection target user identification unit 802 shown in Fig. 8 every predetermined time (for example, 0.5 seconds) and based on the difference from information regarding the position of the projection target user identified last time (for example, 0.5 seconds ago).

[0279] If the projection target user has moved (step S912: Yes), the process returns to step S901, the current position of the projection target user is identified again (step S901), and the processes from step S902 onwards are performed.

[0280] In step S912, if the projection target user has not moved (step S912: No), it is then determined whether or not an instruction to end projection has been given (step S913). Whether or not an instruction to end projection has been given can be determined, for example, by whether or not an instruction to end projection has been given from the user instruction receiving unit 801.

[0281] If there is no instruction to end the projection (step S913: No), the process proceeds to step S910, and thereafter, each of the processes in steps S910 to S913 is repeated. On the other hand, if there is an instruction to end the projection (step S913: Yes), the projection of the image information is stopped (step S914), and the series of processes ends.

[0282] In this way, the image projection device 200 can project an image onto any part of the body of the user 201. Furthermore, even if the position or orientation of the body part changes, the body part to be projected changes, or the user 201 moves, the image projection can be continued.

[0283] (Another embodiment) Although the drone projector 200 has been described as an image projection device, the image projection device is not limited to this. For example, it may be an image projection device that is movably installed on an indoor wall or ceiling. The inventor has named this image projection device a "movable projector" (abbreviated as "Mubapro" or "Mubap"). A movable projector has a variable projection direction, and the projector itself can be moved on the wall or ceiling.

[0284] Fig. 10 is an explanatory diagram showing an image projection device ("movable projector") 1000 according to another embodiment of the present invention and an example of a moving environment of the image projection device 1000. In Fig. 10, the same parts as those in the image projection device 200 described above are denoted by the same reference numerals.

[0285] 10, an image projection device ("movable projector") 1000 includes a moving body 1001. The moving body 1001 includes a main body 1002, a rolling body 1003, a magnet 1004, and a slide shoe 1005.

[0286] The main body 1002 has a generally box-like shape and houses a control circuit 702, an antenna, a motor, a battery, etc. The control circuit 702 is configured with a CPU, memory, etc., and drives and controls each unit of the image projection device 1000. Specifically, for example, the control circuit 702 drives and controls a motor 705 connected to a rolling element 1003, causing the rolling element 1003 to rotate and move the image projection device 1000.

[0287] The rolling elements 1003 are connected to the main body 1002 so as to be rotatable (rollable). The rolling elements 1003 protrude further from the end faces of the main body 1002 toward the ceiling 1006 and wall 1007. It is preferable that three or more rolling elements 1003 are provided. This allows the image projection device 1000 to move stably and smoothly.

[0288] Specifically, the rolling element 1003 can be realized by, for example, a roller, a ball, or a roll. By using a ball or a roll to realize the rolling element 1003, the radius of rotation of the moving element 1001 can be reduced, making it more maneuverable and ensuring a high degree of freedom in movement. When the rolling element 1003 is realized by a roller, the toe angle and caster angle are adjusted as appropriate.

[0289] The magnet 1004 is provided on the same side of the main body 1002 as the rolling element 1003. The magnet 1004 uses magnetic force to attach the image projection device 1000 to a ceiling 1006 or a wall 1007. The slide shoe 1005 has a sheet or flat plate shape. Specifically, the slide shoe 1005 can be made of, for example, hard silicone rubber.

[0290] The slide shoe 1005 is made of a material that does not impair the magnetic force of the magnet 1004 that attracts the image projection device 1000 to the ceiling 1006 or wall 1007 and does not provide resistance when the image projection device 1000 moves.

[0291] The slide shoe 1005 is provided so that the end face opposite the main body is positioned at the same position as the tip of the rolling element 1003 (the contact position of the rolling element 1003 with the ceiling 1006 or wall 1007) or slightly closer to the main body. This allows the rolling element 1003 to be reliably brought into contact with the ceiling 1006 or wall 1007, and allows the image projection device 1000 to be moved smoothly.

[0292] The slide shoe 1005 may be provided so as to be able to move toward and away from the magnet 1004 or the main body 1002. Specifically, for example, the slide shoe 1005 may be connected to the magnet 1004 or the main body 1002 via an elastic member such as a spring. This allows the rolling element 1003 to reliably come into contact with the ceiling 1006 or the wall 1007, allowing the image projection device 1000 to move smoothly.

[0293] Such an image projection device 1000 may identify its current location using the GPS receiver 704 as described above, but is not limited to this. For example, the image projection device 1000 may identify its current location using the principle of triangulation used in PHS (Personal Handy-phone System) and the like.

[0294] Specifically, for example, a plurality of PHS base stations (not shown) are provided on the ceiling 1006 or the wall 1007, and the position of the device is identified by receiving radio waves output from these base stations via an antenna.

[0295] This makes it possible to identify and control the position of the image projection device 1000 with high accuracy even in an environment where it is difficult to receive radio waves from a GPS satellite due to the presence of the ceiling 1006 or wall 1007. This makes it possible to project an image at any position within a building. Since the image projection device 1000 moves along the ceiling 1006 or wall 1007, it is possible to reliably prevent the user 201 from colliding with it, ensuring the safety of the user 201.

[0296] In this way, the image projection device 1000 can be moved using indoor facilities. The indoor facilities may be at least one of a wall, a ceiling, and a floor, and the image projection device 1000 can be moved along the indoor facilities. This allows the image projection device 1000 to be moved to a desired position indoors, and the image can be reliably projected onto the desired part of the user 201.

[0297] Furthermore, as an embodiment, the image projection device may be a projector attached to the body of the user 201, although this is not shown in the drawings. For example, a rechargeable projector may be built into or attached to glasses, a hat, or the like worn by the user 201. This will be described in detail in the second to sixth embodiments described below.

[0298] Alternatively, the projector may be a portable information terminal device (such as a smartphone) that can be held and operated in one hand. In this case, the portable information terminal device may be owned by the user, or may be owned by someone other than the user.

[0299] As described above, the image projection method according to the embodiment of the present invention is characterized by identifying the position of user 201 and any part of the body of user 201 (for example, reference numerals 101, 102, etc.), and projecting an image transmitted or distributed to user 201 onto the identified any part as screen 110, 120, 400, 500. This allows the body to be used as a screen, so that the image can be viewed even if the user does not carry a display device such as a mobile terminal device, or even if there is no display device such as a display or screen nearby.

[0300] The image projection method according to the embodiment of the present invention is further characterized in that the image projection device 200, 1000 that projects the image is moved to a position where the image can be projected onto any part of the user 201. This makes it possible to reliably project the image onto that part of the user 201.

[0301] The image projection method according to the embodiment of the present invention is characterized in that the image projection device 200 is moved using the unmanned aerial vehicle 602. This allows the image projection device 200 to fly freely in three-dimensional space and be moved to a desired position.

[0302] Furthermore, the image projection method according to the embodiment of the present invention is characterized in that the image projection device 1000 is moved using indoor facilities. Furthermore, the indoor facilities may be at least one of a wall, a ceiling, and a floor of the room, and the image projection device 1000 may be moved along the indoor facilities. This allows the image projection device 1000 to be moved to a desired position indoors, and an image can be reliably projected onto the desired part of the user 201.

[0303] Furthermore, the image projection method according to the embodiment of the present invention is further characterized in that any part of the user 201 that will become the screen can be set by designation by the user 201. This allows the user 201 to project an image at a position that he or she desires and view the image.

[0304] Furthermore, the image projection method according to the embodiment of the present invention is characterized in that any part of the user 201 to be used as a screen is selected based on the content of the image. This allows any part of the user 201 to be used as the screen, which is optimal for the image, and improves the visibility of the image.

[0305] Furthermore, the image projection method according to the embodiment of the present invention is characterized in that it changes the projection method for projecting an image based on the state of any part of the user 201 that serves as the screen. This makes it possible to recognize the state of any part, specifically, in the case of the palm of the hand, whether it is a bare hand or a gloved hand, and change the projection method according to that difference, thereby achieving more optimal projection and improving the visibility of the image.

[0306] Furthermore, the image projection method according to the embodiment of the present invention is characterized in that it changes the projection method for projecting an image based on the situation around an arbitrary part of the user 201 that serves as the screen. This makes it possible to recognize the situation around the arbitrary part, specifically, differences in the brightness of the surroundings and the density of people, for example, and change the projection method according to those differences, thereby realizing more optimal projection and improving the visibility of the image.

[0307] Furthermore, the image projection method according to the embodiment of the present invention is characterized in that, in the above invention, the image projected on the screen is recognized, and the projection method is changed based on the recognized image condition. As a result, the projected image is photographed, the photographed image is analyzed, and the projection method is changed based on the recognized image condition. Based on the analysis results, the projection method can be changed to correct the projected image, thereby achieving a more optimal projection and improving the visibility of the image.

[0308] Furthermore, the image projection method according to the embodiment of the present invention is characterized in that, in the above invention, the arbitrary part of the user 201 that serves as the screen is a part of the body of the user 201 that is visible to the user 201. For example, the arbitrary part of the user 201 that serves as the screen is a hand or arm of the user 201. This allows the screen to be easily created by simply moving the hand or arm, and allows images to be projected more quickly.

[0309] Another feature is that the arbitrary part of user 201 that serves as the screen is, for example, the leg or foot of user 201. This allows user 201 to easily view the projected image, for example, when user 201 is sitting. Also, since the area that can be used as a screen is relatively large on the leg or foot compared to the hand or arm, a large image can be projected.

[0310] In addition, for example, the arbitrary part of the user 201 that serves as the screen is the nail of a finger or a toe of the user 201. In this way, by using the nail, which is harder and shinier than skin, as the screen, the image can be projected more clearly.

[0311] Furthermore, the image projection method according to the embodiment of the present invention is further characterized in that the arbitrary part of the user 201 that serves as the screen is a part of the body of the user 201 that can be seen by the user 201 using a mirror. This allows the user 201's own body reflected in the mirror to be used as the screen, and the content of the image can be viewed while looking in the mirror.

[0312] Furthermore, the image projection method according to the embodiment of the present invention is characterized in that when an image is projected onto a part visible to the user 201 using a mirror, the image is inverted left and right. This prevents the image information from being difficult to read due to the characters being mirror-inverted, even when the image information is text information.

[0313] Furthermore, the image projection method according to the embodiment of the present invention is further characterized in that the arbitrary part of the user 201 that serves as the screen is the face, head, or neck of the user 201. This allows the user 201 to check the content of the image while looking at their own face or the like in a mirror.

[0314] Furthermore, the image projection method according to the embodiment of the present invention is further characterized in that the arbitrary part of the user 201 that serves as the screen is the trunk or buttocks of the user 201. This allows the user 201 to check the content of the image while looking at his or her entire body in the mirror.

[0315] The image projection method according to the embodiment of the present invention is characterized in that it identifies the position of user 201 and any part of the body of user 201, and projects an image transmitted or distributed to user 201 using clothing worn at the identified part as a screen. For example, the clothing may include at least one of clothes, gloves, shoes, socks, a hat, and a mask.

[0316] This allows the user 201 to use their clothing as a screen, so they can view images even if they do not carry a display device such as a mobile terminal device or even if there is no display device such as a display or screen nearby.

[0317] The image projection method according to the embodiment of the present invention is further characterized in that it changes the projection method for projecting an image based on the type or state of clothing worn on any part of the user 201 that serves as the screen. For example, it is characterized in that it changes the projection method for projecting an image based on at least one of the color and material of clothing worn on any part of the user 201 that serves as the screen.

[0318] This allows the system to recognize differences in the color and material of clothing, change the projection method according to those differences, and achieve more optimal projection, improving the visibility of the image.

[0319] Furthermore, the image projection devices 200 and 1000 of the embodiments of the present invention are characterized by including a control unit (control circuit 702) that identifies the position of the user 201 and any part of the body of the user 201, and projects an image transmitted or distributed to the user 201 using the identified any part as a screen.

[0320] This allows the user 201 to use his or her body as a screen, so that the user can view images even if he or she does not carry a display device such as a mobile terminal device or even if there is no display device such as a display or screen nearby.

[0321] Furthermore, the image projection devices 200, 1000 of the embodiments of the present invention are characterized by including a control unit (control circuit 702) that identifies the position of the user 201 and any part of the user's 201 body, and projects an image transmitted or distributed to the user 201 using the clothes ("clothes") worn at the identified part as a screen.

[0322] This allows the user 201 to use their clothing as a screen, so they can view images even if they do not carry a display device such as a mobile terminal device or even if there is no display device such as a display or screen nearby.

[0323] Furthermore, the image projection devices 200 and 1000 according to the embodiments of the present invention are further characterized in that the control unit (control circuit 702) moves the image projection device 200 or 1000 that projects the image to a position where the image can be projected onto any part of the user 201. This allows the image to be reliably projected onto the any part of the user 201.

[0324] Furthermore, unmanned aerial vehicle 602 according to an embodiment of the present invention is characterized in that it identifies the position of user 201 and any part of the body of user 201, and projects an image transmitted or distributed to user 201 using the identified part as a screen. Furthermore, unmanned aerial vehicle 602 according to an embodiment of the present invention is characterized in that it includes a control unit (control circuit 702) that identifies the position of user 201 and any part of the body of user 201, and projects an image transmitted or distributed to user 201 using clothing worn at the identified part as a screen. Furthermore, unmanned aerial vehicle 602 according to an embodiment of the present invention is characterized in that it moves to a position where an image can be projected onto the arbitrary part, and projects the image.

[0325] This allows the user 201 to fly freely in three-dimensional space, move to a desired location, and project an image. Because the user 201 can use their body or clothing as a screen, they can view images even if they do not carry a display device such as a mobile terminal device or even if there is no display device such as a display or screen nearby.

[0326] The image projection program according to the embodiment of the present invention specifies the position of the user 201 and any part of the body of the user 201, and causes the image projection device to execute a process of projecting an image transmitted or distributed to the user 201 using the specified any part as a screen. The present invention is characterized in that it executes the above-mentioned program.

[0327] Furthermore, the image projection program of the embodiment of the present invention is characterized in that it causes the image projection device to execute a process of identifying the position of the user 201 and any part of the user's 201 body, and projecting an image transmitted or distributed to the user 201 using the clothing worn at the identified part as a screen.

[0328] Furthermore, the image projection program of the embodiment of the present invention is characterized in that it causes the image projection device 200, 1000 to execute a process of moving the image projection device that projects the image to a position where the image can be projected onto any location.

[0329] This allows the image projection device 200, 1000 to be moved to a desired position and images to be projected. The user 201 can use his or her body or clothing as a screen, so that the user can view the image even if he or she does not carry a display device such as a mobile terminal device or even if there is no display device such as a display or screen nearby.

[0330] The image projection method described in this embodiment can be realized by executing a prepared program on a computer such as a personal computer or a workstation. This program is recorded on a computer-readable recording medium such as a hard disk, CD-ROM, MO, DVD, USB memory, or SSD, and is executed by being read from the recording medium by the computer. This program may also be a transmission medium that can be distributed via a network such as the Internet.

[0331] The contents of the embodiment will be described below as supplementary notes.

[0332] (Appendix 1) Identifying the location of the user and any part of the user's body; An image projection method, comprising: projecting an image transmitted or distributed to the user onto the specified arbitrary portion as a screen.

[0333] (Appendix 2) 2. The image projection method according to claim 1, further comprising moving an image projection device that projects the image to a position where the image can be projected onto the arbitrary location.

[0334] (Appendix 3) 3. The image projection method according to claim 2, wherein the image projection device is moved using an unmanned aerial vehicle.

[0335] (Appendix 4) 3. The image projection method according to claim 2, wherein the image projection device is moved using indoor facilities.

[0336] (Appendix 5) The image projection method described in Appendix 4, wherein the indoor facility is at least one of a wall, a ceiling, and a floor of the room, and the image projection device is moved along the indoor facility.

[0337] (Appendix 6) The arbitrary part of the user that becomes the screen is set by the user's designation. 6. The image projection method according to any one of Supplementary Notes 1 to 5, wherein:

[0338] (Appendix 7) 6. The image projection method according to any one of claims 1 to 5, wherein the arbitrary part of the user that becomes the screen is selected based on the content of the image.

[0339] (Appendix 8) 8. The image projection method according to any one of claims 1 to 7, wherein a projection method for projecting the image is changed based on a state of the arbitrary part of the user that serves as the screen.

[0340] (Appendix 9) An image projection method according to any one of appendices 1 to 8, characterized in that a projection method for projecting the image is changed based on the surrounding situation of the arbitrary part of the user that serves as the screen.

[0341] (Appendix 10) The image projection method according to claim 9, wherein the surrounding conditions of the arbitrary part are the brightness of the surroundings.

[0342] (Appendix 11) 11. The image projection method according to any one of claims 1 to 10, wherein the image projected onto the screen is recognized, and the projection method is changed based on the recognized state of the image.

[0343] (Appendix 12) The image projection method according to any one of appendices 1 to 11, wherein the arbitrary part of the user that serves as the screen is a part of the user's body that is visible to the user.

[0344] (Appendix 13) The image projection method described in Appendix 12, wherein the arbitrary part of the user that serves as the screen is the user's hand or arm.

[0345] (Appendix 14) 13. The image projection method according to claim 12, wherein the arbitrary part of the user that serves as the screen is the user's leg or foot.

[0346] (Appendix 15) 13. The image projection method according to claim 12, wherein the arbitrary part of the user that serves as the screen is the nail of a finger or a toe of the user.

[0347] (Appendix 16) An image projection method described in any one of Appendices 1 to 11, characterized in that the arbitrary part of the user that serves as the screen is a part of the user's body that the user can see using a mirror.

[0348] (Appendix 17) The image projection method according to claim 16, wherein when the image is projected onto a location visible to the user using a mirror, the image is flipped left and right.

[0349] (Appendix 18) The image projection method described in Appendix 16, wherein the arbitrary part of the user that serves as the screen is the user's face, head, or neck.

[0350] (Appendix 19) The image projection method described in Appendix 12 or 16, wherein the arbitrary part of the user that serves as the screen is the trunk or buttocks of the user.

[0351] (Appendix 20) Identifying the location of the user and any part of the user's body; An image projection method, comprising: projecting an image transmitted or distributed to the user onto the clothing of the specified arbitrary part as a screen.

[0352] (Appendix 21) The image projection method described in Appendix 20, wherein the clothing includes at least one of clothes, gloves, shoes, socks, a hat, and a mask.

[0353] (Appendix 22) 22. The image projection method described in Appendix 20 or 21, characterized in that the projection method for projecting the image is changed based on the type or state of clothing worn on the arbitrary part of the user that serves as the screen.

[0354] (Appendix 23) 22. The image projection method described in Appendix 20 or 21, characterized in that the projection method for projecting the image is changed based on at least one of the color and material of clothing worn on the arbitrary part of the user that serves as the screen.

[0355] (Appendix 24) Identifying the location of the user and any part of the user's body; projecting an image transmitted or distributed to the user onto the specified arbitrary portion as a screen; An image projection device comprising a control unit.

[0356] (Appendix 25) Identifying the location of the user and any part of the user's body; projecting an image transmitted or distributed to the user onto the clothing at the specified arbitrary part as a screen; An image projection device comprising a control unit.

[0357] (Appendix 26) The control unit 26. The image projection device according to claim 25, wherein the image projection device for projecting the image is moved to a position where the image can be projected onto the arbitrary portion.

[0358] (Appendix 27) Identifying the location of the user and any part of the user's body; An unmanned aerial vehicle characterized by using the identified arbitrary portion as a screen to project an image transmitted or distributed to the user.

[0359] (Appendix 28) Identifying the location of the user and any part of the user's body; An unmanned aerial vehicle characterized by using clothing worn in the identified arbitrary part as a screen to project an image transmitted or distributed to the user.

[0360] (Appendix 29) An unmanned aerial vehicle as described in Appendix 27 or 28, characterized in that it moves to a position where the image can be projected onto the arbitrary part and projects the image.

[0361] (Appendix 30) Identifying the location of the user and any part of the user's body; a process of projecting an image transmitted or distributed to the user onto the specified arbitrary portion as a screen; An image projection program that is executed by an image projection device.

[0362] (Appendix 31) Identifying the location of the user and any part of the user's body; a process of projecting an image transmitted or distributed to the user onto the clothing at the specified arbitrary part as a screen; An image projection program that is executed by an image projection device.

[0363] (Appendix 32) 32. The image projection program according to claim 30, further comprising causing the image projection device to execute a process of moving the image projection device that projects the image to a position where the image can be projected onto the arbitrary location.

[0364] <Embodiment 2> In the above-described embodiment, the drone projector 200 and the movable projector 1000 have been described as image projection devices, but the image projection device is not limited to these. An image projection device using a glasses-type projector may also be used. The inventor has named this image projection device the "GLASSES PROJECTOR (abbreviated as "Grapro" or "Grapu")."

[0365] The following embodiments (embodiments 3 to 6), including this second embodiment, have the same structure and functions as the image projection devices (drone projector 200, movable projector 1000) described in the above-mentioned embodiments, and therefore detailed description of the structure and functions will be omitted. In other words, the image projection devices in embodiments 2 to 6 also have the structure and functions of the image projection devices (drone projector 200, movable projector 1000) of the above-mentioned embodiments.

[0366] Fig. 11 is an explanatory diagram showing an example of an image projection device ("glass is projector") according to another embodiment (embodiment 2) of the present invention. Fig. 12 is an explanatory diagram showing another example of an image projection device ("glass is projector") according to another embodiment (embodiment 2) of the present invention.

[0367] In FIG. 11, image projection device (glasses projector) 1100 has projection units 1101 (1101a, 1101b) arranged on the outside of the left and right lenses supported by the frame of eyeglasses worn by the user, i.e., on the "end" part of the frame. More specifically, projection unit 1101 may be built-in by embedding all or part of it in the "end" part of the frame. Alternatively, projection unit 1101 may be detachably attached to the "end" part of the frame.

[0368] Specifically, the function of the projection unit 1101 can be realized by, for example, the projector (projection unit) 601 shown in FIG.

[0369] In this way, the projection unit placed in the "Wisdom" part of the frame may be either the left eye side projection unit 1101a or the right eye side projection unit 1101b, or it may be both the left eye side projection unit 1101a and the right eye side projection unit 1101b.

[0370] 11, only one projection unit 1101a is provided for the left eye and only one projection unit 1101b is provided for the right eye, but this is not limited to this. There may be multiple projection units 1101a and 1101b provided for each "Wisdom."

[0371] Furthermore, the image projection device (glasses projector) 1100 has a projection unit 1102 disposed between the left and right lenses supported by the frame of the glasses worn by the user, i.e., in the "bridge." More specifically, the projection unit 1102 may be built-in by embedding all or part of it in the "bridge" portion of the frame. Alternatively, the projection unit 1102 may be detachably attached to the "bridge" portion of the frame (projection unit 1201 in FIG. 12, which will be described later).

[0372] 11, only one projection unit 1102 is arranged, but this is not limitative. A plurality of projection units 1102 may be arranged on the "bridge."

[0373] Furthermore, the image projection device (glasses projector) 1100 has projection units 1103 (1103a, 1103b) arranged above the left and right lenses supported by the frame of the glasses worn by the user, i.e., above the "rims." More specifically, the projection unit 1103 may be built-in by embedding all or part of it in the upper part of the "rims" of the frame. Alternatively, the projection unit 1103 may be detachably attached to the upper part of the "rims" of the frame.

[0374] The projection unit placed on the top of the "rim" of the frame in this manner may be either the left eye side projection unit 1103a or the right eye side projection unit 1103b, or it may be both the left eye side projection unit 1103a and the right eye side projection unit 1103b.

[0375] 11, only one projection unit 1103a is arranged on the left eye side and only one projection unit 1103b is arranged on the right eye side, but this is not limited to this. There may be multiple projection units 1103a and 1103b arranged on the top of each "rim."

[0376] Furthermore, the image projection device (glasses projector) 1100 has projection units 1104 (1104a, 1104b) disposed below the left and right lenses supported by the frame of the glasses worn by the user, i.e., below the "rims." More specifically, the projection unit 1104 may be built-in by embedding all or part of it below the "rims" of the frame. Alternatively, the projection unit 1104 may be removably attached to the lower "rims" of the frame.

[0377] The projection unit placed at the bottom of the "rim" of the frame in this manner may be either the left eye side projection unit 1104a or the right eye side projection unit 1104b, or it may be both the left eye side projection unit 1104a and the right eye side projection unit 1104b.

[0378] In addition, in FIG. 11, only one projection unit 1104a is provided on the left eye side and one projection unit 1104b is provided on the right eye side, but this is not limitative. There may be multiple numbers of 04a and 1104b.

[0379] As shown in Fig. 12, the image projection device (glasses projector) 1100 may be configured so that a projection unit 1201 is detachably arranged on the "bridge" of the frame of the glasses worn by the user. Although only one projection unit 1201 is arranged, this is not limitative. There may be multiple projection units 1201 detachably arranged on the "bridge."

[0380] 12, the image projection device (glasses projector) 1100 has a projection unit 1202 disposed in the left "temple" portion of the frame of the glasses worn by the user. In FIG. 12, the projection unit 1202 is disposed only in the left "temple," but instead, although not shown, the projection unit 1202 may be disposed in the right "temple" portion. Furthermore, the projection unit 1201 may be disposed in both the left and right "temples."

[0381] The detachably arranged projection unit can adjust the projection direction relative to the eyeglass frame. Specifically, the projection unit is grasped, the projection direction is adjusted, and the adjusted direction is fixed. This allows the image to be projected in the direction (position) desired by the user, regardless of the direction of the line of sight. In particular, when multiple projection units are projecting images simultaneously, the positions of the projected images can be adjusted relative to each other.

[0382] Although not shown, the image projection device (glasses projector) 1100 may have a projection unit disposed on at least one of the left and right lenses supported by the frames of the glasses worn by the user.

[0383] More specifically, the projection unit may be built into the lens by embedding all or part of it in the lens. Alternatively, the projection unit may be attached to the surface of the lens. Alternatively, the projection unit may be detachably attached to the lens. Specifically, the lens may be directly clamped by a clip.

[0384] When a projection unit is disposed on the lens, it is preferable to place the projection unit at a position that does not block the user's field of vision.

[0385] Although not shown, a battery (battery 701) may be provided in at least one of the left and right temples of the eyeglass frame. The battery may be built into the temple or may be externally attached. Images can be received, stored, and projected using this battery.

[0386] Furthermore, although not shown, the frame of the glasses may be provided with a camera 603, a microphone 706, a speaker 707, etc. Also, a wired or wireless audio output unit to earphones may be provided.

[0387] The device is equipped with a control unit that controls these projection units to project an image that has been transmitted or distributed to the user, or that has been stored in advance, onto any part of the user's body that the user is looking at as a screen.

[0388] Normally, when focusing one's gaze forward, one moves not only one's eyes but also one's head, and the projection unit provided in the glasses can change its direction in accordance with this movement. Therefore, by providing the projection unit in the glasses, as long as the user is wearing the glasses, it is possible to reliably project an image onto any part of the user's body to which the user's gaze is directed. In addition, the user can adjust the fit of the glasses or move their head to change the projection position. By finely adjusting the direction of the projection unit on the mirror, an image can be accurately projected at a desired position.

[0389] The control unit may be integrated with the projection unit, or may be built into the frame of the glasses or attached externally, in which case it is connected to the projection unit by wire or wirelessly.

[0390] Although not shown, the control unit can realize its functions by having a CPU execute a program stored in memory. The control unit can also realize its functions by using a communication interface that transmits and receives image information. The memory may also be configured to store image information to be projected.

[0391] The control unit may also control these projection units to project an image that has been transmitted or distributed to the user, or that has been stored in advance, onto any part of the user's body that the user is looking at, using the user's clothing as a screen.

[0392] Since the user is wearing glasses, any part of the user's body in the direction of the user's line of sight while wearing the glasses, or the surface of clothing on any part of the body, can be used as the screen.

[0393] The control unit may also control these projection units to project an image that has been transmitted or distributed to the user, or that has been stored in advance, onto the surface that the user is looking at as a screen.

[0394] The surface toward which the user's gaze is directed may be a flat surface or a non-flat surface (for example, a curved surface). Specifically, the surface toward which the user's gaze is directed may be, for example, a wall, a desk top, a window, a mirror, a floor, a ceiling, or the like.

[0395] Since the user wears glasses, various surfaces that exist in the direction of the user's line of sight while wearing the glasses can be used as the screen.

[0396] The control unit may control a plurality of projection units to simultaneously project images using the plurality of projection units. When the plurality of projection units simultaneously project images, a first projection unit and a second projection unit among the plurality of projection units may simultaneously project different images. Specifically, for example, as shown in FIG. 1, different image information can be projected onto the palmtop screen 110 of the right hand 101 and the palmtop screen 120 of the left hand 102, respectively.

[0397] Furthermore, the first and second projection units of the multiple projection units may simultaneously project the same image in an overlapping manner. This allows the projected image to be brighter. Also, by slightly shifting the overlap, the image can be made to appear three-dimensional (3D) to the user.

[0398] The control unit may also divide the image to be projected into multiple parts and control the multiple projection units to simultaneously project each of the divided images. In this case, the projection direction of each projection unit can be adjusted manually or automatically.

[0399] The control unit may also be configured to detect whether the user is wearing eyeglasses, and project an image when it is determined that the user is wearing eyeglasses as a result of the detection. This makes it possible to avoid unnecessary projection and save power consumption. The user may select whether to project an image. If you want to project an image, you can wear the glasses, and if you do not want to project an image, you can remove the glasses.

[0400] Whether or not eyeglasses are being worn can be determined, for example, by providing a contact sensor at the part of the eyeglasses that touches the user's nose or ears when worn, and based on the detection results of the contact sensor.

[0401] Furthermore, whether or not eyeglasses are being worn may be determined based on the detection results of a contact sensor provided in a portion that is not normally in contact when eyeglasses are being worn. More specifically, if it is detected that the outside or upper side of the temples is being in contact, it can be assumed that the eyeglasses have been removed and are set down, and in this case it can be determined that the eyeglasses are not being worn.

[0402] The control unit may also be configured to recognize that the user wearing the glasses is a pre-registered user, and if it determines as a result of the recognition that the user wearing the glasses is a pre-registered user, project an image. This prevents image information addressed to the user from being projected even if an unregistered person other than the user wears the glasses. This prevents information addressed to the user from being leaked without the user's permission.

[0403] The glasses may also be equipped with a reception unit that receives input of at least one of ID information and password information. While not shown, the reception unit may be provided with predetermined keys on the frame of the glasses, and input may be made by pressing or touching the keys. Alternatively, the glasses may be equipped with a contact sensor, and ID information or password information may be obtained by a predetermined contact method known only to the user (e.g., the position of the touch, the number of touches, etc.).

[0404] Based on the input information, the control unit determines whether the input ID information and password information match, and if the result of that determination is that they match, it can recognize that the user is a previously registered user.

[0405] The glasses may also include a voice receiving unit (not shown) that receives voice input from the user. Specifically, the voice receiving unit can be realized by, for example, a microphone 706.

[0406] The control unit may be configured to recognize that the user is a pre-registered user by voice recognition based on the input voice.

[0407] The control unit can also detect contact with the eyeglass frame and start image projection when contact is detected. Specifically, the detection of contact with the eyeglass frame can be achieved, for example, by a contact sensor provided at a predetermined position on the eyeglass frame. In this way, the user can easily issue a command to start image projection by touching the eyeglasses.

[0408] The control unit can also detect contact with the eyeglass frame, and if contact is detected, can stop the projection of the image being projected. In this way, the user can easily issue a command to stop (end) image projection by touching the eyeglasses.

[0409] The same contact sensor can be used to start and stop image projection. The first touch will start image projection, and the second touch on the same contact sensor will stop image projection. In this way, touching the same contact sensor may alternately start and stop projection.

[0410] Furthermore, the instruction to start projecting an image and the instruction to stop projecting an image can be given by separate contact sensors. Specifically, for example, touching the contact sensor on the right temple may start projecting an image, and touching the contact sensor on the left temple may stop projecting an image.

[0411] In this way, the start and end of image projection can be instructed by the simple operation of touching the frame of the glasses.

[0412] As described above, the image projection device according to the second embodiment of the present invention is characterized by including a control unit that is provided in eyeglasses worn by a user and projects an image that is transmitted, distributed, or pre-stored to the user onto any part of the user's body toward which the user's gaze is directed, as a screen. This allows the user to easily view a desired image on any part of the user's body toward which the user's gaze is directed.

[0413] The image projection device according to the second embodiment of the present invention is characterized by including a control unit that is provided in eyeglasses worn by a user and projects an image that is transmitted, distributed, or pre-stored to the user onto the user's clothing on any part of the user's body that the user is looking at, as a screen, thereby allowing the user to easily view a desired image on the clothing on any part of the user's body that the user is looking at.

[0414] The image projection device according to the second embodiment of the present invention is characterized by including a control unit that is provided in glasses worn by a user and projects an image that is transmitted or distributed to the user or that is stored in advance onto a surface toward which the user's gaze is directed, thereby enabling the user to easily view a desired image in the direction (position) toward which the user's gaze is directed.

[0415] The image projection device according to the second embodiment of the present invention is further characterized in that at least one projection unit 1101a, 1101b is disposed on the outer side of the left and right lenses supported by the eyeglass frame, thereby enabling the image to be projected in the direction in which the user's line of sight is always directed.

[0416] The image projection device according to the second embodiment of the present invention is further characterized in that at least one projection unit 1102, 1201 is disposed between the left and right lenses supported by the eyeglass frame, thereby enabling the image to be projected in the direction in which the user's line of sight is always directed.

[0417] The image projection device according to the second embodiment of the present invention is further characterized in that at least one projection unit 1103a, 1103b is disposed above the left and right lenses supported by the eyeglass frame, thereby enabling the image to be projected in the direction in which the user's line of sight is always directed.

[0418] The image projection device according to the second embodiment of the present invention is further characterized in that at least one projection unit 1104a, 1104b is disposed below the left and right lenses supported by the eyeglass frame, thereby enabling the image to be projected in the direction in which the user's line of sight is always directed.

[0419] The image projection device according to the second embodiment of the present invention is further characterized in that the projection unit 1202 is disposed on at least one of the left and right temples of the eyeglasses frame, which similarly allows the image to be projected in the direction in which the user's line of sight is always directed.

[0420] Furthermore, the image projection device according to the second embodiment of the present invention is characterized in that the projection units 1201 and 1202 are detachably attached to the frame of the glasses. This allows the projection units to be removed when not needed and used as normal glasses.

[0421] The image projection device according to the second embodiment of the present invention is further characterized in that a projection unit is disposed on at least one of the left and right lenses supported by the eyeglass frame.

[0422] The image projection device according to the second embodiment of the present invention is further characterized in that the images are simultaneously projected by the multiple projection units, allowing the user to view multiple images simultaneously.

[0423] The image projection device according to the second embodiment of the present invention is further characterized in that the first and second projection units among the plurality of projection units simultaneously project different images, thereby allowing the user to simultaneously check different pieces of information.

[0424] Furthermore, the image projection device according to the second embodiment of the present invention is further characterized in that the first and second projection units among the multiple projection units simultaneously project the same image in an overlapping manner. This allows the projected image to be viewed brighter, and the user can enjoy a three-dimensional image.

[0425] The image projection device according to the second embodiment of the present invention is further characterized in that the image to be projected is divided into a plurality of parts and each of the plurality of projection units simultaneously projects each of the divided images, thereby allowing the user to view the image without reducing the resolution.

[0426] The image projection device according to the second embodiment of the present invention is further characterized in that a battery for receiving, storing, and projecting images is provided in at least one of the left and right temples of the eyeglasses frame, allowing the user to receive images, store the received images, and project and view the received and stored images while moving.

[0427] Furthermore, the image projection device according to the second embodiment of the present invention is characterized in that the control unit detects whether the user is wearing eyeglasses, and projects an image when it is determined that the user is wearing eyeglasses as a result of the detection. This prevents the image from being projected in a position other than the desired position. Furthermore, power consumption can be reduced when projection is not required.

[0428] Furthermore, the image projection device of the second embodiment of the present invention is further characterized in that the control unit recognizes that the user wearing the glasses is a pre-registered user, and if it is determined as a result of the recognition that the user wearing the glasses is a pre-registered user, it projects an image.

[0429] The image projection device according to the second embodiment of the present invention further includes a receiving unit for receiving input of at least one of ID information and password information in the glasses, and the control unit recognizes that the user is a pre-registered user based on the input information. This prevents someone other than the user from wearing the glasses and viewing the user's information.

[0430] The image projection device according to the second embodiment of the present invention further includes a voice receiving unit in the glasses that receives voice input from the user, and the control unit recognizes the user as a pre-registered user through voice recognition based on the input voice. This allows the user to be easily recognized simply by speaking, thereby simplifying the process of personal authentication.

[0431] In the image projection device according to the second embodiment of the present invention, the control unit detects contact with the eyeglasses frame and starts image projection when the contact is detected. This allows a user to easily issue a command to start image projection by simply touching the eyeglasses.

[0432] In the image projection device according to the second embodiment of the present invention, the control unit detects contact with the eyeglasses frame and, if the contact is detected, stops the image projection. This allows a user to easily issue a command to stop the projection of the image by simply touching the eyeglasses.

[0433] The image projection method described in this second embodiment can be realized by executing a prepared program on a computer such as a personal computer or a workstation. This program is recorded on a computer-readable recording medium such as a hard disk, CD-ROM, MO, DVD, USB memory, or SSD, and is executed by being read from the recording medium by the computer. This program may also be a transmission medium that can be distributed via a network such as the Internet.

[0434] The contents of the second embodiment will be described below as an appendix.

[0435] (Appendix 233) provided on glasses worn by a user, An image projection device characterized by having a control unit that projects an image that is transmitted or distributed to the user, or that is pre-stored, onto any part of the user's body that the user's gaze is directed at as a screen.

[0436] (Appendix 234) provided on glasses worn by a user, An image projection device characterized by having a control unit that projects an image that is transmitted, distributed, or pre-stored to the user using the clothing worn on any part of the user's body at which the user's gaze is directed as a screen.

[0437] (Appendix 235) provided on glasses worn by a user, An image projection device characterized by having a control unit that projects an image that is transmitted or distributed to the user, or that is pre-stored, onto a surface that the user's gaze is directed at as a screen.

[0438] (Appendix 236) The image projection device according to any one of appendices 233 to 235, wherein at least one projection unit is disposed on the outer side of the left and right lenses supported by the frame of the eyeglasses.

[0439] (Appendix 237) 237. The image projection device according to any one of appendices 233 to 236, wherein at least one projection unit is disposed between the left and right lenses supported by the frame of the eyeglasses.

[0440] (Appendix 238) An image projection device according to any one of appendices 233 to 237, characterized in that at least one projection unit is arranged above the left and right lenses supported by the frame of the glasses.

[0441] (Appendix 239) An image projection device according to any one of appendices 233 to 238, characterized in that at least one projection unit is arranged below the left and right lenses supported by the frame of the glasses.

[0442] (Appendix 240) 239. The image projection device according to any one of appendices 233 to 239, wherein a projection unit is disposed on at least one of the left and right temples of the eyeglass frame.

[0443] (Appendix 241) 241. The image projection device according to any one of appendices 233 to 240, wherein the projection unit is detachably attached to a frame of glasses.

[0444] (Appendix 242) 242. The image projection device according to any one of appendices 233 to 241, wherein a projection unit is disposed on at least one of the left and right lenses supported by the eyeglass frame.

[0445] (Appendix 243) 243. The image projection device according to any one of appendices 233 to 242, wherein the images are simultaneously projected by a plurality of the projection units.

[0446] (Appendix 244) 244. The image projection device according to claim 243, wherein a first projection unit and a second projection unit among the plurality of projection units simultaneously project different images.

[0447] (Appendix 245) 244. The image projection device according to claim 243, wherein a first projection unit and a second projection unit among the plurality of projection units simultaneously project the same image in an overlapping manner.

[0448] (Appendix 246) An image projection device as described in Appendix 243, characterized in that the image to be projected is divided into multiple parts, and each of the multiple projection units simultaneously projects each of the divided images.

[0449] (Appendix 247) An image projection device according to any one of appendices 233 to 246, characterized in that a battery for receiving, storing, and projecting images is provided in at least one of the left and right temples of the eyeglass frame.

[0450] (Appendix 248) The control unit Detecting that the eyeglasses are being worn by the user; 8. The image projection device according to any one of appendices 233 to 247, wherein the image is projected when it is determined that the eyeglasses are being worn as a result of the detection.

[0451] (Appendix 249) The control unit Recognizing that the user wearing the glasses is a pre-registered user, An image projection device described in any one of Appendices 233 to 248, characterized in that if, as a result of the recognition, it is determined that the user wearing the glasses is a pre-registered user, the image is projected.

[0452] (Appendix 250) The glasses include a reception unit that receives input of at least one of ID information and password information, The image projection device described in Appendix 249, characterized in that the control unit recognizes that the user is a pre-registered user based on the input information.

[0453] (Appendix 251) the glasses are provided with a voice receiving unit that receives voice input from a user; The image projection device described in Appendix 249, characterized in that the control unit recognizes that the user is a pre-registered user through voice recognition based on the input voice.

[0454] (Appendix 252) The control unit Detecting contact with the frame of the eyeglasses; 252. The image projection device according to any one of appendices 233 to 251, wherein, when a contact is made as a result of the detection, projection of the image is started.

[0455] (Appendix 253) The control unit Detecting contact with the frame of the eyeglasses; 253. The image projection device according to any one of appendices 233 to 252, wherein, if the result of the detection indicates that contact has occurred, projection of the image is stopped.

[0456] <Third Embodiment>

[0457] The image projection device may also be an image projection device using an earphone-type projector. The inventor has named this image projection device the "EARPHONES PROJECTOR (abbreviated as "Earpro", "Earpu" or "Earp")."

[0458] Fig. 13 is an explanatory diagram showing an example of an image projection device ("earphone projector") according to another embodiment (third embodiment) of the present invention. Fig. 14 is an explanatory diagram showing an example of wearing the image projection device ("earphone projector") according to another embodiment (third embodiment) of the present invention.

[0459] 13, an image projection device (earphone projector) 1300 has a projection unit 1301 disposed in earphones worn by a user. More specifically, when an earpiece 1302 of the earphones is inserted into the ear canal of the user's ear, the projection unit 1301 projects an image in the user's line of sight. The projection unit 1301 is attached to the main body of the earphone so that it faces in the direction of the arrow.

[0460] Fig. 14 shows the state in which the earphone is worn on the right ear. The earphone projector 1300 in Fig. 14 shows the state in which the earpiece 1302 is inserted into the ear canal of the right ear, as viewed from the direction of arrow A shown in Fig. 13. By wearing it in this way, the projection unit 1301 is attached so that it faces the direction of the user's line of sight.

[0461] The projection unit 1301 may also be detachably attached to the earphones.

[0462] The projection unit 1301 thus arranged in the earphones may be arranged only in the earphone for the right ear, or only in the earphone for the left ear, or the projection unit 1301 may be arranged in both the earphones for the right ear and the left ear.

[0463] 13, only one projection unit 1301 is provided, but this is not limited to this. There may be multiple (two or more) projection units 1301 for each of the right-ear and left-ear earphones. If there are multiple projection units, the projection directions of the projection units 1301 may be shifted so that the projected images do not overlap.

[0464] The detachably arranged projection unit 1301 can adjust the projection direction onto the earphones. Specifically, the projection unit 1301 is grasped, the projection direction is adjusted, and the adjusted direction is fixed. This allows the image to be projected in the direction (position) desired by the user, without having to adjust the fit of the earphones, and regardless of the direction of the line of sight. In particular, when multiple projection units are projecting images simultaneously, the positions of the projected images can be adjusted relative to each other.

[0465] Specifically, the function of the projection unit 1301 can be realized by, for example, the projector (projection unit) 601 shown in FIG.

[0466] Although not shown, the earphones may be provided with a battery (battery 701). The battery may be built into the earphones or may be external. Images can be received, stored, and projected using this battery.

[0467] Furthermore, although not shown in the figure, the earphones may be provided with a camera 603, a microphone 706, a speaker 707, etc. Also, since they are earphones, they are provided with an audio output unit, which is an inherent function of earphones. Also, although not shown in the figure, they are provided with a volume adjustment unit (button), etc.

[0468] The system is equipped with a control unit that controls these projection units 1301 to project an image that has been transmitted or distributed to the user, or that has been stored in advance, onto any part of the user's body that the user is looking at as a screen.

[0469] Normally, when focusing one's gaze forward, one moves one's head, and the direction of the projection unit 1301 provided in the earphones worn in the ears can also be changed in accordance with this movement. Therefore, by providing the projection unit 1301 in the earphones, it is possible to reliably project an image onto any part of the user's body toward which the user's gaze is directed, as long as the user is wearing the earphones. Furthermore, regarding the projection position, the user can accurately project an image onto the desired position by adjusting the fit of the earphones or by moving their head to fine-tune the projection direction of the projection unit 1300 provided in the earphones.

[0470] The control unit may be integrated with the projection unit. Alternatively, the control unit may be built into the earphone, Alternatively, it may be externally attached, in which case it is connected to the projection unit 1301 by wire or wirelessly.

[0471] Although not shown, the control unit can realize its functions by having a CPU (microcomputer) execute a program stored in memory. The control unit can also realize its functions by a communication interface that transmits and receives image information. The memory may also store image information to be projected.

[0472] The control unit may also control the projection unit 1301 to project an image that has been transmitted or distributed to the user, or that has been stored in advance, onto the user's clothing on any part of the user's body that the user is looking at, as a screen.

[0473] Since the user is wearing earphones, any part of the user's body in the direction of their line of sight while wearing the earphones, or the surface of their clothing on any part of their body, can be used as the screen.

[0474] The control unit may also control the projection unit 1301 to project an image that has been transmitted or distributed to the user, or that has been stored in advance, onto a surface that the user is looking at as a screen.

[0475] The surface toward which the user's gaze is directed may be a flat surface or a non-flat surface (e.g., a curved surface). Specifically, the surface toward which the user's gaze is directed may be, for example, a wall, a desk top, a window, a mirror, a floor, a ceiling, or the like.

[0476] Since the user is wearing earphones, various surfaces that exist in the direction of the user's line of sight while wearing the earphones can be used as screens.

[0477] The control unit may control the multiple projection units 1301 to simultaneously project images using the multiple projection units 1301. When the multiple projection units 1301 simultaneously project images, a first projection unit (for example, a projection unit arranged in an earphone for the right ear) and a second projection unit (for example, a projection unit arranged in an earphone for the left ear) of the multiple projection units 1301 may simultaneously project different images. Specifically, for example, as shown in FIG. 1, different image information can be projected onto the palmtop screen 110 of the right hand 101 and the palmtop screen 120 of the left hand 102, respectively.

[0478] Furthermore, the same image may be simultaneously projected by a first projection unit and a second projection unit among the multiple projection units 1301, with the images overlapping each other. This allows the projected image to be brighter. Also, by slightly shifting the overlapping, the image can be made to appear three-dimensional (3D) to the user.

[0479] The control unit may also divide the image to be projected into multiple parts and control the multiple projection units to simultaneously project each of the divided images. In this case, the projection direction of each projection unit 1301 can be adjusted manually or automatically.

[0480] The control unit may also be configured to detect whether the user is wearing earphones, and project an image if it determines that the earphones are being worn as a result of the detection. This avoids unnecessary projection and saves power consumption. The user can simply wear the earphones if they want to project an image, and remove the earphones if they do not want to project an image.

[0481] Whether or not the earphone is being worn can be determined based on the detection results of a contact sensor provided on the earpiece 1302 for inserting into the ear canal of the earphone.

[0482] Furthermore, whether or not the earphones are being worn can be determined based on the detection results of a contact sensor provided in a portion that is not normally in contact when the earphones are being worn. More specifically, for example, if contact is detected in the projection unit 1301, it can be assumed that the earphones have been removed and placed down, in which case it can be determined that the earphones are not being worn.

[0483] The control unit may also be configured to recognize that the user wearing the earphones is a pre-registered user, and if the recognition result determines that the user wearing the earphones is a pre-registered user, project an image. This prevents image information addressed to the user from being projected even if an unregistered person other than the user wears the earphones. This prevents information addressed to the user from being leaked without the user's permission.

[0484] The earphones may also be equipped with a reception unit that receives input of at least one of ID information and password information. Although not shown, the earphones may have a designated key on them, and input can be made by pressing or touching that key. Alternatively, the earphones may be equipped with a contact sensor, and a predetermined contact method known only to the user (for example, the position of the touch, the number of touches, etc.) may be used to obtain ID information or password information.

[0485] Based on the input information, the control unit determines whether the input ID information and password information match, and if the result of that determination is that they match, it can recognize that the user is a previously registered user.

[0486] The earphone may also include a voice receiving unit (not shown) that receives voice input from the user. Specifically, the voice receiving unit can be realized by, for example, a microphone 706.

[0487] The control unit may be configured to recognize that the user is a pre-registered user by voice recognition based on the input voice.

[0488] The control unit can also detect contact with the earphones and, if the contact is detected, start image projection. Specifically, the function of detecting contact with the earphones can be realized, for example, by a contact sensor provided at a predetermined position on the earphones. In this way, the user can easily issue a command to start image projection by touching the earphones.

[0489] The control unit also detects contact with the earphones, and if contact is detected, can stop the projection of the image being projected. In this way, the user can easily issue a command to stop (end) image projection by touching the earphones.

[0490] The same contact sensor can be used to start and stop image projection. A first touch can start image projection, and a second touch on the same contact sensor can stop image projection. In this way, touching the same contact sensor can alternately start and stop projection.

[0491] Furthermore, the instruction to start projecting an image and the instruction to stop projecting an image can be issued by separate contact sensors. Specifically, for example, touching the contact sensor provided in the earphone for the right ear may start projecting an image, and touching the contact sensor provided in the earphone for the left ear may stop projecting an image.

[0492] In this way, the start and end of image projection can be instructed by the simple operation of touching the earphone.

[0493] Although the image projection device 1300 is an earphone type, it is not limited to this. For example, headphones may be used instead of earphones.

[0494] As described above, the image projection device of the third embodiment according to the present invention is characterized by including a control unit that is provided in earphones worn by a user and that projects an image that is transmitted, distributed, or pre-stored to the user onto any part of the user's body that the user's gaze is directed at, as a screen. This allows the user to easily view a desired image on any part of the user's body that the user's gaze is directed at.

[0495] The image projection device according to the third embodiment of the present invention is characterized by including a control unit that is provided in earphones worn by a user and projects an image that is transmitted, distributed, or pre-stored to the user onto the user's clothing on any part of the user's body that the user is looking at, as a screen, thereby allowing the user to easily view a desired image on the clothing on any part of the user's body that the user is looking at.

[0496] The image projection device of the third embodiment of the present invention is characterized by including a control unit that is provided in earphones worn by a user and projects an image that is transmitted or distributed to the user or that is stored in advance onto a screen on the surface toward which the user's gaze is directed, thereby enabling the user to easily view a desired image in the direction (position) toward which the user's gaze is directed.

[0497] The image projection device according to the third embodiment of the present invention is further characterized in that the projection unit 1301 is provided detachably to the earphones, so that when not needed, the earphones can be removed and used as normal earphones.

[0498] Furthermore, the image projection device according to the third embodiment of the present invention is further characterized in that images are simultaneously projected by a plurality of projection units 1301. This allows the user to view a plurality of images simultaneously.

[0499] The image projection device according to the third embodiment of the present invention is further characterized in that different images are simultaneously projected by a first projection unit and a second projection unit among the plurality of projection units 1301. This allows the user to simultaneously check different pieces of information.

[0500] Furthermore, the image projection device according to the third embodiment of the present invention is characterized in that the first and second projection units among the plurality of projection units 1301 simultaneously project the same image in an overlapping manner. This allows the projected image to be viewed brighter. Furthermore, the user can enjoy a three-dimensional image.

[0501] The image projection device according to the third embodiment of the present invention further includes a plurality of projection units. The projector divides the image into several parts, and each of the divided images is simultaneously projected by each of the multiple projection units. This allows the user to view the image without reducing the resolution.

[0502] The image projection device of the third embodiment of the present invention is further characterized in that the earphones are provided with a battery for receiving, storing, and projecting images, allowing the user to receive images, store the received images, and project and view the received and stored images while on the move.

[0503] Furthermore, the image projection device of the third embodiment of the present invention is characterized in that the control unit detects whether the user is wearing earphones, and projects an image when it determines that the earphones are being worn as a result of the detection. This makes it possible to prevent the image from being projected in a location other than the desired location. Furthermore, it is possible to reduce power consumption when projection is not required.

[0504] Furthermore, the image projection device of the third embodiment of the present invention is further characterized in that the control unit recognizes that the user wearing the earphones is a pre-registered user, and if it is determined as a result of the recognition that the user wearing the earphones is a pre-registered user, it projects an image.

[0505] The image projection device of the third embodiment of the present invention further includes a receiving unit in the earphones that receives input of at least one of ID information and password information, and the control unit recognizes that the user is a pre-registered user based on the input information. This prevents someone other than the user from wearing the earphones and viewing the user's information.

[0506] The image projection device according to the third embodiment of the present invention further includes a voice receiving unit in the earphone that receives voice input from the user, and the control unit recognizes the input voice by voice recognition to identify the user as a pre-registered user. This allows the user to be easily recognized simply by speaking, thereby simplifying the process of personal authentication.

[0507] In the image projection device according to the third embodiment of the present invention, the control unit detects contact with the earphones and starts image projection when the contact is detected. This allows a user to easily issue a command to start image projection by simply touching the earphones.

[0508] In the image projection device according to the third embodiment of the present invention, the control unit detects contact with the earphones and, if the contact is detected, stops the image projection. This allows a user to easily issue a command to stop the projection of the image by simply touching the earphones.

[0509] The image projection method described in this third embodiment can be realized by executing a prepared program on a computer such as a personal computer or a workstation. This program is recorded on a computer-readable recording medium such as a hard disk, CD-ROM, MO, DVD, USB memory, or SSD, and is executed by being read from the recording medium by the computer. This program may also be a transmission medium that can be distributed via a network such as the Internet.

[0510] The contents of the third embodiment will be described below as an appendix.

[0511] (Appendix 333) Provided in earphones worn by a user, An image projection device characterized by having a control unit that projects an image that is transmitted or distributed to the user, or that is pre-stored, onto any part of the user's body that the user's gaze is directed at as a screen.

[0512] (Appendix 334) Provided in earphones worn by a user, An image projection device characterized by having a control unit that projects an image that is transmitted, distributed, or pre-stored to the user using the clothing worn on any part of the user's body at which the user's gaze is directed as a screen.

[0513] (Appendix 335) Provided in earphones worn by a user, An image projection device characterized by having a control unit that projects an image that is transmitted or distributed to the user, or that is pre-stored, onto a surface that the user's gaze is directed at as a screen.

[0514] (Appendix 336) 6. The image projection device according to any one of appendices 333 to 335, wherein a projection unit is provided detachably on the earphone.

[0515] (Appendix 337) 7. The image projection device according to any one of appendices 333 to 336, wherein the images are simultaneously projected by a plurality of the projection units.

[0516] (Appendix 338) 338. The image projection device according to claim 337, wherein a first projection unit and a second projection unit among the plurality of projection units simultaneously project different images.

[0517] (Appendix 339) 338. The image projection device according to claim 337, wherein a first projection unit and a second projection unit among the plurality of projection units simultaneously project the same image in an overlapping manner.

[0518] (Appendix 340) An image projection device as described in Appendix 337, characterized in that the image to be projected is divided into multiple parts, and each of the multiple projection units simultaneously projects each of the divided images.

[0519] (Appendix 341) The image projection device according to any one of appendices 333 to 340, wherein the earphone is provided with a battery for receiving, storing, and projecting images.

[0520] (Appendix 342) The control unit Detecting that the earphone is being worn by the user; 342. The image projection device according to claim 333, wherein the image is projected when it is determined that the earphones are being worn as a result of the detection.

[0521] (Appendix 343) The control unit Recognizing that the user wearing the earphone is a pre-registered user, An image projection device according to any one of appendices 333 to 342, characterized in that, if the result of the recognition indicates that the user wearing the earphones is a pre-registered user, the image is projected.

[0522] (Appendix 344) The earphone includes a receiving unit that receives input of at least one of ID information and password information, The image projection device described in Appendix 343, characterized in that the control unit recognizes that the user is a pre-registered user based on the input information.

[0523] (Appendix 345) the earphone includes a voice receiving unit that receives voice input from a user; The image projection device described in Appendix 343, characterized in that the control unit recognizes that the user is a pre-registered user through voice recognition based on the input voice.

[0524] (Appendix 346) The control unit Detecting contact with the earphone; 6. The image projection device according to any one of appendices 333 to 345, wherein, as a result of the detection, if contact has been made, projection of the image is started.

[0525] (Appendix 347) The control unit Detecting contact with the earphone; 347. The image projection device according to any one of appendices 333 to 346, wherein, if the result of the detection indicates that contact has occurred, projection of the image is stopped.

[0526] <Fourth Embodiment> The image projection device may also be an image projection device using a head-mounted or ear-mounted projector.

[0527] The inventor named this image projection device the "Wearable Projector" (abbreviated as "WearPro", "Wep" or "Weep").

[0528] FIG. 15 is an explanatory diagram showing an example of an image projection device ("wearable projector") according to another embodiment (fifth embodiment) of the present invention.

[0529] 15, a user wears an image projection device (wearable projector) 1500 on the head or around the ear. More specifically, the wearable projector 1500 includes a main body 1502 and a projection unit 1501 at the tip of the main body 1502.

[0530] A mounting unit 1503 that is hung over the user's ear and fixed to the head is provided on the opposite side of the main body 1502 from the projection unit 1501. The projection unit 1501 may be attached to the main body 1502 in a detachable manner.

[0531] The attachment part 1503 may be hung above the ear to fix the main body 1502. Alternatively, the attachment part 1503 may be wrapped around the head to fix the main body 1502 without touching the ear.

[0532] Although not shown, the attachment unit 1503 may be an earring or pierced earring. Specifically, it may be clipped onto the earlobe, or the main body 1502 may be hung from a ring-shaped attachment unit 1503 formed by drilling a hole in a part of the ear, such as the earlobe. The pin-shaped attachment unit 1503 may be inserted into a hole drilled in a part of the ear, such as the earlobe, like a pierced earring, to fix the main body 1502 to the ear. It may also be a pierced earring type that is worn on a part of the face other than the ear, such as the nose.

[0533] Furthermore, although not shown in the drawings, the attachment unit 1503 may be a mask type. Specifically, the main body 1502 may be attached to either of the parts that hang over both ears and cover the mouth and nose. The main body 1502 may be attached to a position, for example, on either side of the mouth, avoiding the parts that cover the mouth and nose. The main body 1502 may also be attached to the strings that hang the mask over the ears. The main body 1502 may be detachable from the mask. Therefore, when not needed, the main body 1502 may be removed and used as a normal mask.

[0534] In this way, the main body 1502 or the projection unit 1501 arranged on the main body 1502 may be arranged only on the left ear side, or, although not shown, may be arranged only on the right ear side. Furthermore, although not shown, the main body 1502 may be arranged on both the right ear side and the left ear side.

[0535] 15, only one projection unit 1501 is provided, but this is not limiting. There may be multiple (two or more) projection units 1501 for each of the main bodies 1502 on the right and left ear sides. If there are multiple projection units 1501, the projection directions of the projection units 1501 may be shifted so that the projected images do not overlap.

[0536] The detachably arranged projection unit 1501 can adjust the projection direction projected onto the main body 1502. Specifically, the projection unit 1501 is grasped, the projection direction is adjusted, and the adjusted direction is fixed.

[0537] This allows the image to be projected in a direction (position) desired by the user, regardless of the direction of the user's gaze, without adjusting the fit of the main body 1502. In particular, when multiple projection units simultaneously project images, the positions of the projected images can be adjusted.

[0538] Specifically, the function of the projection unit 1501 can be realized by, for example, the projector (projection unit) 601 shown in FIG.

[0539] Although not shown, the main body 1502 may be provided with a battery (battery 701). The battery may be built into the main body 1502 or may be attached to the mounting portion 1503. Images can be received, stored, and projected using this battery.

[0540] Furthermore, although not shown, a camera 603, a microphone 706, a speaker 707, etc. may be provided on the main body 1502. Furthermore, although not shown, the main body 1502 may also be provided with various operation keys, etc.

[0541] The system is equipped with a control unit that controls these projection units 1501 to project an image that has been transmitted or distributed to the user, or that has been stored in advance, onto any part of the user's body that the user is looking at as a screen.

[0542] Normally, when focusing one's gaze forward, one moves one's head, and projection unit 1501 provided on main body 1502 on the head can change direction in accordance with this movement. Therefore, by providing projection unit 1501 on main body 1502, as long as the user is wearing wearable projector 1500 (main body 1502), an image can be reliably projected onto any part of the user's body to which the user's gaze is directed.

[0543] Regarding the projection position, the user can accurately project the image at the desired position by adjusting the fit of the main body 1502 or by moving their head to fine-tune the projection direction of the projection unit 1500 provided on the main body 1502.

[0544] The control unit may be built into the main body 1502 or may be externally attached, and may be connected to the projection unit 1501 by wire or wirelessly.

[0545] Although not shown, the control unit can realize its functions by having a CPU (microcomputer) execute a program stored in memory. The control unit can also realize its functions by a communication interface that transmits and receives image information. The memory may also store image information to be projected.

[0546] The control unit may also control the projection unit 1501 to project an image that has been transmitted or distributed to the user, or that has been stored in advance, onto the user's clothing on any part of the user's body that the user is looking at, as a screen.

[0547] Since the user is wearing the main body 1502, any part of the user's body that is in the direction of the user's line of sight while wearing the main body 1502, or the surface of clothing on any part of the body, can be used as the screen.

[0548] The control unit may also control the projection unit 1501 to project an image that has been transmitted or distributed to the user, or that has been stored in advance, onto a surface that the user is looking at as a screen.

[0549] The surface toward which the user's gaze is directed may be a flat surface or a non-flat surface (e.g., a curved surface). Specifically, the surface toward which the user's gaze is directed may be, for example, a wall, a desk top, a window, a mirror, a floor, a ceiling, or the like.

[0550] Since the user wears the main body 1502, various surfaces that exist in the direction of the user's line of sight while wearing the main body 1502 can be used as a screen.

[0551] The control unit may control the plurality of projection units 1501 so that the plurality of projection units 1501 simultaneously project images.

[0552] Here, when multiple projection units 1501 are provided to simultaneously project images, different images may be simultaneously projected by a first projection unit (for example, a projection unit 1501 arranged on the main body 1502 on the right ear side) and a second projection unit (for example, a projection unit 1501 arranged on the main body 1502 on the left ear side) of the multiple projection units 1501.

[0553] Specifically, for example, as shown in FIG. 1, different image information can be projected onto a palmtop screen 110 on the right hand 101 and a palmtop screen 120 on the left hand 102, respectively.

[0554] Furthermore, the same image may be simultaneously projected by a first projection unit and a second projection unit among the multiple projection units 1501, with the images overlapping each other. This allows the projected image to be brighter. Also, by slightly shifting the overlapping, the image can be made to appear three-dimensional (3D) to the user.

[0555] The control unit may also divide the image to be projected into multiple parts and control the multiple projection units to simultaneously project each of the divided images. In this case, the projection direction of each projection unit 1501 can be adjusted manually or automatically.

[0556] The control unit may also be configured to detect that the wearable projector 1500 is being worn by the user, and if it determines as a result of the detection that the wearable projector 1500 is being worn, project an image.

[0557] This prevents unnecessary projection and saves power consumption. When a user wants to project an image, the user simply wears wearable projector 1500, and when the user does not want to project an image, the user simply removes wearable projector 1500.

[0558] Whether or not wearable projector 1500 is being worn can be determined, for example, by providing a contact sensor on wearing section 1503 of wearable projector 1500 and based on the detection result of the contact sensor.

[0559] In addition, whether or not the wearable projector 1500 is being worn may be determined based on the detection results of a contact sensor provided in a part that would not normally be touched when the wearable projector 1500 is being worn.

[0560] More specifically, for example, if it is detected that a part of the main body 1502 or the attachment part 1503 that does not come into contact with the user's face or head when worn is being touched, it can be inferred that the wearable projector 1500 (main body 1502) has been removed and placed down, and in that case it can be determined that the wearable projector 1500 (main body 1502) is not being worn.

[0561] The control unit may also recognize that the user wearing the wearable projector 1500 (main body 1502) is a pre-registered user, and if, as a result of the recognition, it determines that the user wearing the wearable projector 1500 (main body 1502) is a pre-registered user, it may project an image.

[0562] This prevents image information addressed to the user from being projected even if an unregistered person other than the user wears wearable projector 1500 (main body 1502). This prevents information addressed to the user from being leaked without the user's permission.

[0563] The main body 1502 may also be provided with a reception unit that receives input of at least one of ID information and password information. Although not shown, the reception unit may be provided with predetermined keys on the main body 1502, and input may be made by pressing or touching the keys. Also, a contact sensor may be provided on the main body 1502, and a contact sensor that is known only to a predetermined user may be provided. Depending on the method (for example, the position of the touch, the number of touches, etc.), it may be ID information or password information.

[0564] Based on the input information, the control unit determines whether the input ID information and password information match, and if the result of that determination is that they match, it can recognize that the user is a previously registered user.

[0565] Furthermore, the main body 1502 may be provided with a voice receiving unit (not shown) that receives voice input from the user. Specifically, the voice receiving unit can realize its function using, for example, the microphone 706.

[0566] The control unit may be configured to recognize that the user is a pre-registered user by voice recognition based on the input voice.

[0567] Furthermore, the control unit can detect contact with the wearable projector 1500, and start projecting an image when contact is detected as a result of the detection. Specifically, the function of detecting contact with the wearable projector 1500 can be realized by, for example, a contact sensor provided at a predetermined position on the wearable projector 1500 (main body 1502 or mounting unit 1503).

[0568] In this way, the user can easily give an instruction to start image projection by touching the wearable projector 1500.

[0569] Furthermore, the control unit can detect contact with the wearable projector 1500, and if the contact is detected as a result of the detection, can stop the projection of the image that is being projected. In this way, the user can easily issue an instruction to stop (end) the image projection by touching the wearable projector 1500.

[0570] The same contact sensor can be used to start and stop image projection. A first touch can start image projection, and a second touch on the same contact sensor can stop image projection. In this way, touching the same contact sensor can alternately start and stop projection.

[0571] Furthermore, an instruction to start projecting an image and an instruction to stop projecting an image can be given by separate contact sensors. Specifically, for example, touching the contact sensor provided on the main body 1502 on the right ear side may start projecting an image, and touching the contact sensor provided on the main body 1502 on the left ear side may stop projecting an image.

[0572] In this way, it is possible to give instructions to start and end image projection by simply touching the wearable projector 1500 (main body 1502).

[0573] As described above, the image projection device of embodiment 5 of the present invention is characterized by having a control unit that projects an image that is transmitted or distributed to the user, or that is pre-stored, onto any part of the body that the user's gaze is directed at, as a screen, and is worn by the user on the head or over the ear.

[0574] This allows the user to easily view a desired image at any part of their own body where the user's gaze is directed.

[0575] Furthermore, the image projection device of embodiment 5 of the present invention is characterized in that it includes a control unit that projects an image that is transmitted or distributed to the user, or that is pre-stored, using clothing worn on any part of the body at which the user's gaze is directed as a screen, and is worn by the user on the head or around the ear.

[0576] This allows the user to easily view the desired image on the clothing worn on any part of the user's body that the user is looking at.

[0577] Furthermore, the image projection device of embodiment 5 of the present invention is characterized in that it includes a control unit that projects an image that is transmitted or distributed to the user, or that is pre-stored, onto a surface that the user's gaze is directed at as a screen, and is worn by the user on the head or over the ear.

[0578] This allows the user to easily view the desired image in the direction (position) in which the user's line of sight is directed.

[0579] Furthermore, the image projection device according to the fifth embodiment of the present invention is further characterized in that projection unit 1501 is provided detachably on wearable projector 1500 (main body 1502). This allows it to be removed when not needed.

[0580] The image projection device according to the fifth embodiment of the present invention is further characterized in that a plurality of projection units 1501 simultaneously project images.

[0581] This allows the user to view multiple images simultaneously.

[0582] The image projection device according to the fifth embodiment of the present invention is further characterized in that a first projection unit and a second projection unit among the plurality of projection units 1501 simultaneously project different images.

[0583] This allows the user to view different pieces of information simultaneously.

[0584] Furthermore, the image projection device according to the fifth embodiment of the present invention is further characterized in that a first projection unit and a second projection unit among the plurality of projection units 1501 simultaneously project the same image in an overlapping manner.

[0585] This allows the projected image to be viewed brighter, and the user can enjoy a three-dimensional image.

[0586] Furthermore, the image projection device of the fifth embodiment of the present invention is further characterized in that the image to be projected is divided into a plurality of parts and each of the plurality of projection units simultaneously projects each of the divided images, thereby allowing the user to view the image without reducing the resolution.

[0587] The image projection device according to the fifth embodiment of the present invention is further characterized in that the main body 1502 is provided with a battery for receiving, storing, and projecting images.

[0588] This allows the user to receive images, store the received images, and project and view the received and stored images while moving.

[0589] In the image projection device according to the fifth embodiment of the present invention, the control unit further Therefore, the wearable projector 1500 (main body 1502) is detected to be worn, and if it is determined as a result of the detection that the wearable projector 1500 (main body 1502) is worn, an image is projected.

[0590] This makes it possible to prevent an image from being projected in a position other than the desired position, and also makes it possible to reduce power consumption when projection is not required.

[0591] Furthermore, the image projection device of embodiment 5 of the present invention is further characterized in that the control unit recognizes that the user wearing the wearable projector 1500 (main body 1502) is a pre-registered user, and if, as a result of the recognition, it is determined that the user wearing the wearable projector 1500 (main body 1502) is a pre-registered user, it projects an image.

[0592] Furthermore, the image projection device of the fifth embodiment of the present invention is further characterized in that the main body 1502 is provided with a reception unit that receives input of at least one of ID information and password information, and the control unit recognizes that the user is a pre-registered user based on the input information.

[0593] This makes it possible to prevent someone other than the user from wearing the wearable projector 1500 (main body 1502) and viewing the user's information.

[0594] Furthermore, the image projection device of the fifth embodiment of the present invention is further characterized in that the main body 1502 is provided with a voice receiving unit that receives voice input from the user, and the control unit recognizes that the user is a pre-registered user through voice recognition based on the input voice.

[0595] This allows the user to be easily recognized simply by speaking, simplifying the process of personal authentication.

[0596] Furthermore, the image projection device of the fifth embodiment of the present invention is further characterized in that the control unit detects that the wearable projector 1500 (main body 1502) has been touched, and starts projecting an image when the detection result indicates that the wearable projector 1500 has been touched.

[0597] This allows a command to start image projection to be easily given by the simple gesture of touching the main body 1502.

[0598] Furthermore, the image projection device of the fifth embodiment of the present invention is further characterized in that the control unit detects that the wearable projector 1500 (main body 1502) has been touched, and if the detection result shows that the wearable projector 1500 has been touched, the control unit stops projecting the image.

[0599] This allows a user to easily issue a command to stop the projection of an image by simply touching the main body 1502.

[0600] The image projection method described in this fourth embodiment can be realized by executing a prepared program on a computer such as a personal computer or a workstation. This program is recorded on a computer-readable recording medium such as a hard disk, CD-ROM, MO, DVD, USB memory, or SSD, and is executed by being read from the recording medium by the computer. This program may also be a transmission medium that can be distributed via a network such as the Internet.

[0601] The contents of the fourth embodiment will be described below as an appendix.

[0602] (Appendix 433) a control unit that projects an image that is transmitted or distributed to the user or that is stored in advance onto any part of the user's body that the user is looking at, as a screen; An image projection device that is worn by the user on the head or over the ear.

[0603] (Appendix 434) a control unit that projects an image that is transmitted or distributed to the user or that is stored in advance onto the user's clothing at any part of the body to which the user's gaze is directed, as a screen; An image projection device that is worn by the user on the head or over the ear.

[0604] (Appendix 435) a control unit that projects an image that is transmitted or distributed to the user or that is stored in advance onto a surface that the user's gaze is directed at as a screen; An image projection device that is worn by the user on the head or over the ears.

[0605] (Appendix 436) 6. The image projection device according to any one of appendices 433 to 435, wherein the projection unit is provided detachably on the device itself.

[0606] (Appendix 437) 7. The image projection device according to claim 433, wherein the images are simultaneously projected by a plurality of the projection units.

[0607] (Appendix 438) The image projection device described in Appendix 437, characterized in that different images are simultaneously projected by a first projection unit and a second projection unit among the multiple projection units.

[0608] (Appendix 439) The image projection device described in Appendix 437, characterized in that a first projection unit and a second projection unit among the multiple projection units simultaneously project the same image in an overlapping manner.

[0609] (Appendix 440) An image projection device as described in Appendix 437, characterized in that the image to be projected is divided into multiple parts, and each of the multiple projection units simultaneously projects each of the divided images.

[0610] (Appendix 441) 441. The image projection device according to any one of appendices 433 to 440, further comprising a battery for receiving, storing, and projecting images.

[0611] (Appendix 442) The control unit Detecting that the device is being worn by the user; When it is determined that the device itself is attached as a result of the detection, the image is projected. Attachment 433 - 441 characterized by the image projection device of any one of the above.

[0612] (Appendix 443) The control unit The device recognizes that the user wearing the device is a registered user, An image projection device according to any one of appendices 433 to 442, characterized in that if, as a result of the recognition, it is determined that the user wearing the device is a pre-registered user, the image is projected.

[0613] (Appendix 444) The device includes a receiving unit that receives input of at least one of ID information and password information, The image projection device described in Appendix 443, characterized in that the control unit recognizes that the user is a pre-registered user based on the input information.

[0614] (Appendix 445) The device includes a voice receiving unit that receives voice input from a user, The image projection device described in Appendix 443, characterized in that the control unit recognizes that the user is a pre-registered user through voice recognition based on the input voice.

[0615] (Appendix 446) The control unit Detects that the device has been touched, 6. The image projection device according to any one of appendices 433 to 445, wherein, when a contact is made as a result of the detection, projection of the image is started.

[0616] (Appendix 447) The control unit Detects that the device has been touched, 7. The image projection device according to claim 433, wherein, if the detection result indicates that the object has been touched, the projection of the image is stopped.

[0617] <Fifth Embodiment> The image projection device may also be an image projection device using a projector attached to a hat. The inventor has named this image projection device the "Hat Projector" (abbreviated as "Hatopro", "Hatop" or "Hatop").

[0618] FIG. 16 is an explanatory diagram showing an example of an image projection device ("hat projector") according to another embodiment (embodiment 5) of the present invention. FIG. 17 is an explanatory diagram showing another example of an image projection device ("hat projector") according to another embodiment (embodiment 5) of the present invention. FIG. 18 is an explanatory diagram showing yet another example of an image projection device ("hat projector") according to another embodiment (embodiment 5) of the present invention.

[0619] 16, an image projection device (hat projector) 1600 has a projection unit 1601 disposed on a hat 1603 worn by a user via an attachment unit 1602. More specifically, the projection unit 1601 is attached to a predetermined location on the hat 1603 using the attachment unit 1602 so that the projection unit 1601 faces the line of sight of the user when the projection unit 1601 is worn on the hat 1603, as shown in FIG. 16. The projection unit 1601 may also be attached to the hat 1603 in a detachable manner.

[0620] 16, the projection unit 1601 disposed on the hat 1603 may be on the left side of the hat 1603, or, although not shown, may be on the right side of the hat. Furthermore, although not shown, the projection unit 1601 may be disposed on both the right and left sides.

[0621] 17, the projection unit 1601 may be provided near the center of the front of the hat 1603. As shown in Fig. 18, the projection unit 1601 may be provided on the top of the hat 1603 via an attachment unit 1602. Although not shown, the projection unit 1601 may also be provided on the brim of the hat 1603.

[0622] The attachment unit 1602 may be configured to fix the projection unit 1601 to the hat 1603 by gripping the edge or brim of the hat 1603 .

[0623] 16, only one projection unit 1601 is provided, but this is not limiting. Multiple (two or more) projection units 1601 may be provided on the hat 1603. When multiple projection units 1601 are provided, the projection directions of the respective projection units 1601 may be shifted so that the projected images do not overlap.

[0624] The detachably arranged projection unit 1601 can adjust the projection direction projected onto the hat 1603. Specifically, the projection direction can be adjusted by adjusting the attachment of the attachment unit 1602, or by gripping the projection unit 1601, and then the adjusted direction can be fixed.

[0625] This allows the image to be projected in a direction (position) desired by the user, regardless of the direction of the user's gaze, without adjusting the fit of the hat 1603. In particular, when multiple projection units simultaneously project images, the positions of the projected images can be adjusted.

[0626] Specifically, the function of the projection unit 1601 can be realized by, for example, the projector (projection unit) 601 shown in FIG.

[0627] Although not shown, a battery (battery 701) may be provided in the projection unit 1601 or the attachment unit 1602. The battery may be built into the projection unit 1601 or the attachment unit 1602, or may be externally attached to the projection unit 1601 or the attachment unit 1602. Images can be received, stored, and projected using this battery.

[0628] Furthermore, although not shown, a camera 603, a microphone 706, a speaker 707, and the like may be provided on the projection unit 1601 or the mounting unit 1602.

[0629] The system is equipped with a control unit that controls these projection units 1601 to project an image that has been transmitted or distributed to the user, or that has been stored in advance, onto any part of the user's body that the user is looking at as a screen.

[0630] Normally, when focusing one's gaze forward, one moves one's head, and the direction of projection unit 1601 provided on hat 1603 can also be changed in accordance with this movement. Therefore, by providing projection unit 1601 on hat 1603, as long as the user is wearing hat 1603, it is possible to reliably project an image onto any part of the user's body to which the user's gaze is directed.

[0631] Regarding the projection position, the user can adjust the fit of the hat 1603, or By moving the head and fine-tuning the projection direction of the projection unit 1600 provided on the hat 1603, the image can be accurately projected at the desired position.

[0632] The control unit may be integrated with the projection unit 1601. The control unit may also be built into the mounting unit 1602 or attached externally, in which case it is connected to the projection unit 1601 by wire or wirelessly.

[0633] Although not shown, the control unit can realize its functions by having a CPU (microcomputer) execute a program stored in memory. The control unit can also realize its functions by a communication interface that transmits and receives image information. The memory may also store image information to be projected.

[0634] The control unit may also control the projection unit 1601 to project an image that has been transmitted or distributed to the user, or that has been stored in advance, onto any part of the user's body that the user is looking at, using the user's clothing as a screen.

[0635] Since the user is wearing a hat 1603, any part of the user's body that is in the direction of the user's line of sight while wearing the hat 1603, or the surface of the clothing on any part of the body, can be used as the screen.

[0636] The control unit may also control the projection unit 1601 to project an image that has been transmitted or distributed to the user, or that has been stored in advance, onto a surface that the user is looking at as a screen.

[0637] The surface toward which the user's gaze is directed may be a flat surface or a non-flat surface (e.g., a curved surface). Specifically, the surface toward which the user's gaze is directed may be, for example, a wall, a desk top, a window, a mirror, a floor, a ceiling, or the like.

[0638] Since the user is wearing the hat 1603, various surfaces that exist in the direction of the user's line of sight while wearing the hat 1603 can be used as a screen.

[0639] The control unit may control the multiple projection units 1601 to simultaneously project images using the multiple projection units 1601. When the multiple projection units 1601 simultaneously project images, a first projection unit (for example, a projection unit arranged on the right side of the hat 1603) and a second projection unit (for example, a projection unit arranged on the left side of the hat 1603) of the multiple projection units 1601 may simultaneously project different images.

[0640] Specifically, for example, as shown in FIG. 1, different image information can be projected onto a palmtop screen 110 on the right hand 101 and a palmtop screen 120 on the left hand 102, respectively.

[0641] Furthermore, the same image may be simultaneously projected by a first projection unit and a second projection unit among the multiple projection units 1601, with the images overlapping each other. This allows the projected image to be brighter. Also, by slightly shifting the overlapping, the image can be made to appear three-dimensional (3D) to the user.

[0642] The control unit may also divide the image to be projected into multiple parts and control the multiple projection units to simultaneously project each of the divided images. In this case, the projection direction of each projection unit 1601 can be adjusted manually or automatically.

[0643] The control unit may also be configured to detect that the user is wearing a hat 1603, and project an image if it is determined as a result of the detection that the user is wearing the hat 1603. This makes it possible to avoid unnecessary projection and save power consumption. If the user wants to project an image, he or she can put on the hat 1603, and if the user does not want to project an image, he or she can take off the hat 1603.

[0644] Whether or not the hat 1603 is being worn can be determined, for example, by providing a contact sensor on the inside of the hat 1603 at a position where the user's head comes into contact, based on the detection result of the contact sensor.

[0645] Furthermore, whether or not the hat 1603 is being worn may be determined based on the detection results of a contact sensor provided in a portion that is not normally in contact when the hat 1603 is being worn. More specifically, for example, if contact is detected at the brim or the like, it can be assumed that the hat 1603 has been removed and placed down, and in this case it can be determined that the hat 1603 is not being worn.

[0646] The control unit may also recognize that the user wearing hat 1603 is a pre-registered user, and if it determines as a result of the recognition that the user wearing hat 1603 is a pre-registered user, it may project an image.

[0647] This prevents image information addressed to the user from being projected even if an unregistered person other than the user wears the hat 1603. Therefore, it is possible to prevent information addressed to the user from being leaked without the user's permission.

[0648] Furthermore, a receiving unit that receives input of at least one of ID information and password information may be provided in projection unit 1601, attachment unit 1602, or hat 1603. Although not shown, the receiving unit may have a predetermined key on projection unit 1601, attachment unit 1602, or hat 1603, and input can be made by pressing or touching the key.

[0649] Furthermore, a contact sensor may be provided on the projection unit 1601, the attachment unit 1602, or the hat 1603, and ID information or password information may be obtained based on a predetermined contact method known only to the user (for example, the position of the touch, the number of touches, etc.).

[0650] Based on the input information, the control unit determines whether the input ID information and password information match, and if the result of that determination is that they match, it can recognize that the user is a previously registered user.

[0651] Furthermore, a voice receiving unit (not shown) that receives voice input from the user may be provided in the projection unit 1601, the attachment unit 1602, or the hat 1603. Specifically, the voice receiving unit can be realized by, for example, the microphone 706.

[0652] The control unit may be configured to recognize that the user is a pre-registered user by voice recognition based on the input voice.

[0653] The control unit can also detect contact with a predetermined location on the projection unit 1601, the attachment unit 1602, or the hat 1603, and can start projecting an image if the detection result shows that contact has occurred. Specifically, the function of detecting contact with the projection unit 1601, the attachment unit 1602, or the hat 1603 can be realized by, for example, a contact sensor or the like provided at a predetermined position on the projection unit 1601, the attachment unit 1602, or the hat 1603. .

[0654] In this way, the user can easily give an instruction to start image projection by touching a predetermined location on the projection unit 1601, the attachment unit 1602, or the hat 1603.

[0655] Furthermore, the control unit detects contact with a predetermined location on the projection unit 1601, the attachment unit 1602, or the hat 1603, and can stop the projection of the image being projected if the contact is detected as a result of the detection. In this way, the user can easily issue an instruction to stop (end) image projection by touching a predetermined location on the projection unit 1601, the attachment unit 1602, or the hat 1603.

[0656] The same contact sensor can be used to start and stop image projection. A first touch can start image projection, and a second touch on the same contact sensor can stop image projection. In this way, touching the same contact sensor can alternately start and stop projection.

[0657] Furthermore, an instruction to start projecting an image and an instruction to stop projecting an image can be given by separate contact sensors. Specifically, for example, touching the contact sensor provided on the projection unit 1601 may start projection of an image, and touching the contact sensor provided on the attachment unit 1602 may stop projection of the image.

[0658] In this way, the start and end of image projection can be instructed by a simple operation of touching the projection unit 1601, the attachment unit 1602, or the hat 1603.

[0659] Although the image projection device 1600 is described as being provided on a hat, the present invention is not limited to this. For example, instead of the hat 1603, a helmet, a sun visor, a bandana, or the like may be worn on the head.

[0660] As described above, the image projection device of the fifth embodiment of the present invention is characterized by having a control unit that is provided in a hat 1603 worn by a user and projects an image that is transmitted or distributed to the user, or that is stored in advance, onto any part of the user's body that the user's gaze is directed at, as a screen.

[0661] This allows the user to easily view a desired image at any part of their own body where the user's gaze is directed.

[0662] Furthermore, the image projection device of the fifth embodiment of the present invention is characterized by having a control unit that is provided in a hat 1603 worn by a user and projects an image that is transmitted or distributed to the user or that is stored in advance, using the clothing worn on any part of the user's body at which the user's gaze is directed as a screen.

[0663] This allows the user to easily view the desired image on the clothing worn on any part of the user's body that the user is looking at.

[0664] Furthermore, the image projection device of the fifth embodiment of the present invention is characterized by including a control unit that is provided in a hat 1603 worn by a user and projects an image that is transmitted or distributed to the user or that is stored in advance onto the surface that the user is looking at as a screen.

[0665] This allows the user to easily view the desired image in the direction (position) in which the user's line of sight is directed.

[0666] Furthermore, the image projection device according to the fifth embodiment of the present invention is characterized in that the projection unit 1601 is provided detachably on the hat 1603. This allows the projection unit 1601 to be removed when not needed and used as an ordinary hat 1603.

[0667] The image projection device according to the fifth embodiment of the present invention is further characterized in that a plurality of projection units 1601 simultaneously project images.

[0668] This allows the user to view multiple images simultaneously.

[0669] Furthermore, the image projection device according to the fifth embodiment of the present invention is further characterized in that a first projection unit and a second projection unit among the plurality of projection units 1601 simultaneously project different images.

[0670] This allows the user to view different pieces of information simultaneously.

[0671] Furthermore, the image projection device according to the fifth embodiment of the present invention is further characterized in that a first projection unit and a second projection unit among the plurality of projection units 1601 simultaneously project the same image in an overlapping manner.

[0672] This allows the projected image to be viewed brighter, and the user can enjoy a three-dimensional image.

[0673] Furthermore, the image projection device of the fifth embodiment of the present invention is further characterized in that the image to be projected is divided into multiple parts, and each of the multiple projection units simultaneously projects each of the divided images.

[0674] This allows the user to view the image without reducing the resolution.

[0675] The image projection device according to the fifth embodiment of the present invention is further characterized in that the hat 1603 or the device itself is provided with a battery for receiving, storing, and projecting images.

[0676] This allows the user to receive images, store the received images, and project and view the received and stored images while moving.

[0677] Furthermore, the image projection device of the fifth embodiment of the present invention is further characterized in that the control unit detects that the user is wearing hat 1603, and projects an image when it determines as a result of the detection that hat 1603 is being worn.

[0678] This makes it possible to prevent an image from being projected in a position other than the desired position, and also makes it possible to reduce power consumption when projection is not required.

[0679] Furthermore, the image projection device of embodiment 5 of the present invention is further characterized in that the control unit recognizes that the user wearing hat 1603 is a pre-registered user, and if, as a result of the recognition, it is determined that the user wearing hat 1603 is a pre-registered user, it projects an image.

[0680] The image projection apparatus according to the fifth embodiment of the present invention further includes a projection unit 1601, an acquisition unit 1602, and a projection unit 1603. The attachment part 1602 or the hat 1603 is provided with a reception part that receives input of at least one of ID information and password information, and the control part recognizes that the user is a pre-registered user based on the input information.

[0681] This makes it possible to prevent people other than the user from wearing the hat 1603 and seeing the user's information.

[0682] Furthermore, the image projection device of embodiment 5 of the present invention is further characterized in that the projection unit 1601, the attachment unit 1602, or the hat 1603 is provided with a voice reception unit that receives input of the user's voice, and the control unit recognizes that the user is a pre-registered user through voice recognition based on the input voice.

[0683] This allows the user to be easily recognized simply by speaking, simplifying the process of personal authentication.

[0684] Furthermore, the image projection device of embodiment 5 of the present invention is further characterized in that the control unit detects contact with the projection unit 1601, the attachment unit 1602, or the hat 1603, and starts projecting an image if contact is detected as a result of the detection.

[0685] This allows the user to easily give an instruction to start image projection by simply touching the hat 1603.

[0686] Furthermore, the image projection device of embodiment 5 of the present invention is further characterized in that the control unit detects contact with the projection unit 1601, the attachment unit 1602, or the hat 1603, and if contact is detected as a result of the detection, stops projecting the image.

[0687] This allows a user to easily issue a command to stop the projection of an image by simply touching the hat 1603.

[0688] The image projection method described in this fifth embodiment can be realized by executing a prepared program on a computer such as a personal computer or a workstation. This program is recorded on a computer-readable recording medium such as a hard disk, CD-ROM, MO, DVD, USB memory, or SSD, and is executed by being read from the recording medium by the computer. This program may also be a transmission medium that can be distributed via a network such as the Internet.

[0689] The contents of the fifth embodiment will be described below as an appendix.

[0690] (Appendix 533) provided on a hat worn by the user, An image projection device characterized by having a control unit that projects an image that is transmitted or distributed to the user, or that is pre-stored, onto any part of the user's body that the user's gaze is directed at as a screen.

[0691] (Appendix 534) provided on a hat worn by the user, An image projection device characterized by having a control unit that projects an image that is transmitted, distributed, or pre-stored to the user using the clothing worn on any part of the user's body at which the user's gaze is directed as a screen.

[0692] (Appendix 535) provided on a hat worn by the user, An image projection device characterized by comprising a control unit that projects an image that is transmitted or distributed to the user, or that is pre-stored, onto a surface that the user's gaze is directed at as a screen.

[0693] (Appendix 536) 6. The image projection device according to any one of appendices 533 to 535, wherein the projection unit is detachably provided on the hat.

[0694] (Appendix 537) 7. The image projection device according to any one of appendices 533 to 536, wherein the images are simultaneously projected by a plurality of the projection units.

[0695] (Appendix 538) The image projection device described in Appendix 537, characterized in that different images are simultaneously projected by a first projection unit and a second projection unit among the multiple projection units.

[0696] (Appendix 539) The image projection device described in Appendix 537, characterized in that a first projection unit and a second projection unit among the multiple projection units simultaneously project the same image in an overlapping manner.

[0697] (Appendix 540) An image projection device as described in appendix 537, characterized in that the image to be projected is divided into multiple parts, and each of the multiple projection units simultaneously projects each of the divided images.

[0698] (Appendix 541) An image projection device according to any one of appendices 533 to 540, characterized in that the hat or the device itself is provided with a battery for receiving, storing, and projecting images.

[0699] (Appendix 542) The control unit Detecting that the hat is being worn by the user; 542. The image projection device according to claim 533, wherein the image is projected when it is determined that the hat is worn as a result of the detection.

[0700] (Appendix 543) The control unit Recognizing that the user wearing the hat is a pre-registered user, An image projection device described in any one of Appendices 533 to 542, characterized in that if, as a result of the recognition, it is determined that the user wearing the hat is a pre-registered user, the image is projected.

[0701] (Appendix 544) a receiving unit for receiving input of at least one of ID information and password information in the hat or the device; The image projection device described in Appendix 543, characterized in that the control unit recognizes that the user is a pre-registered user based on the input information.

[0702] (Appendix 545) The hat or the device itself is provided with a voice receiving unit that receives voice input from a user, The image projection device described in Appendix 543, characterized in that the control unit recognizes that the user is a pre-registered user through voice recognition based on the input voice.

[0703] (Appendix 546) The control unit Detecting contact with the hat or the device itself; The image projection device according to any one of appendices 533 to 545, wherein, when a contact is made as a result of the detection, projection of the image is started.

[0704] (Appendix 547) The control unit Detecting contact with the hat or the device itself; 7. The image projection device according to any one of appendices 533 to 546, wherein, if the result of the detection indicates that contact has occurred, projection of the image is stopped.

[0705] <Sixth Embodiment> The image projection device may also be an image projection device using a projector attached to a neck speaker. The project was named "NEKPRO, NEKUP or NEKUP" (abbreviated as "NEKPRO", "NEKUP" or "NEKUP").

[0706] FIG. 19 is an explanatory diagram showing an example of an image projection device ("neck projector") according to another embodiment (sixth embodiment) of the present invention. FIG. 20 is an explanatory diagram showing another example of an image projection device ("neck projector") according to another embodiment (sixth embodiment) of the present invention. FIG. 21 is an explanatory diagram showing yet another example of an image projection device ("neck projector") according to another embodiment (sixth embodiment) of the present invention.

[0707] Fig. 19 shows a neck speaker type neck projector, Fig. 20 shows a necklace type neck projector, and Fig. 21 shows a pendant type neck projector.

[0708] 19, neck speaker-type image projection device (neck projector) 1900 has a projection unit 1902 arranged in neck speaker 1901 that the user wears around their neck. Neck speaker 1901 has the shape of a typical neck speaker. Specifically, it has a horseshoe shape and is worn around the neck by passing the opening from behind the neck. Therefore, it is worn so that both ends are positioned in front of the user (near both collarbones).

[0709] As shown in FIG. 19, the projection unit 1902 placed on the neck speaker 1901 may be located near the tip of either side of the neck speaker 1901, or, although not shown, may be located only near either the right tip or the left tip of the neck speaker.

[0710] Furthermore, reference numeral 1903a denotes a speaker for the right ear, and reference numeral 1903b denotes a speaker for the left ear in the neck speaker 1901. The functions of the speakers 1903a and 1903b can be realized by the speaker 707 shown in FIG.

[0711] 19, the projection unit 1902 is attached to a portion near the tip of the neck speaker 1901 so as to face the direction of the user's line of sight when attached to the neck speaker 1901. The projection unit 1902 may also be attached so as to be detachable from the neck speaker 1901.

[0712] The detachably arranged projection unit 1902 can adjust the projection direction projected onto the neck speaker 1901. Specifically, by gripping the projection unit 1902, the projection direction can be adjusted and the adjusted direction can be fixed.

[0713] This allows the image to be projected in a direction (position) desired by the user, regardless of the direction of the user's gaze, without the need to adjust the fit of the neck speaker 1901 or necklace. In particular, when multiple projection units simultaneously project images, the positions of the projected images can be adjusted.

[0714] Specifically, the function of the projection unit 1902 can be realized by, for example, the projector (projection unit) 601 shown in FIG.

[0715] Although not shown, the neck speaker 1901 or the projection unit 1902 may be provided with a battery (battery 701). The battery may be built into the neck speaker 1901 or the projection unit 1902, or may be externally attached to the neck speaker 1901 or the projection unit 1902. Images can be received, stored, and projected using this battery.

[0716] Furthermore, although not shown, the camera 603, microphone 706, etc. may be provided in the neck speaker 1901 or the projection unit 1902.

[0717] The device is also equipped with a control unit that controls the neck speaker 1901 or the projection unit 1902 to project an image that is transmitted or distributed to the user, or that is stored in advance, onto any part of the user's body that the user is looking at as a screen.

[0718] Normally, when focusing one's gaze forward, one moves one's head, and the direction of the projection unit 1902 provided on the neck speaker 1901 can also be changed in accordance with this movement. Therefore, by providing the projection unit 1902 on the neck speaker 1901, as long as the user is wearing the neck speaker 1901, it is possible to reliably project an image onto any part of the user's body that the user's gaze is directed at.

[0719] Regarding the projection position, the user can adjust the fit of the neck speaker 1901 or move their neck (shoulder) to fine-tune the projection direction of the projection unit 1902 provided on the neck speaker 1901, thereby accurately projecting the image at the desired position.

[0720] The control unit may be integrated with the projection unit 1902. The control unit may also be built into the mounting unit 1602 or attached externally, in which case it is connected to the projection unit 1902 by wire or wirelessly.

[0721] Although not shown, the control unit can realize its functions by having a CPU (microcomputer) execute a program stored in memory. The control unit can also realize its functions by a communication interface that transmits and receives image information. The memory may also store image information to be projected.

[0722] The control unit also controls the projection unit 1902 to project the image of the user's own body at the point where the user's gaze is directed. Clothing worn at any part of the body may be used as a screen onto which an image transmitted or distributed to the user, or a pre-stored image, may be projected.

[0723] Since the user is wearing the neck speaker 1901, any part of the user's body that is in the direction of the user's line of sight while wearing the neck speaker 1901, or the surface of the clothing on any part of the body, can be used as a screen.

[0724] The control unit may also control the projection unit 1902 to project an image that has been transmitted or distributed to the user, or that has been stored in advance, onto a surface that the user is looking at as a screen.

[0725] The surface toward which the user's gaze is directed may be a flat surface or a non-flat surface (e.g., a curved surface). Specifically, the surface toward which the user's gaze is directed may be, for example, a wall, a desk top, a window, a mirror, a floor, a ceiling, or the like.

[0726] Since the user is wearing the neck speaker 1901, various surfaces that exist in the direction of the line of sight (direction of the body) while wearing the neck speaker 1901 can be used as a screen.

[0727] The control unit may control the multiple projection units 1902 to simultaneously project images using the multiple projection units 1902. When the multiple projection units 1902 simultaneously project images, a first projection unit (for example, a projection unit arranged on the right side of the neck speaker 1901) and a second projection unit (for example, a projection unit arranged on the left side of the neck speaker 1901) of the multiple projection units 1902 may simultaneously project different images.

[0728] Specifically, for example, as shown in FIG. 1, different image information can be projected onto a palmtop screen 110 on the right hand 101 and a palmtop screen 120 on the left hand 102, respectively.

[0729] Furthermore, the same image may be simultaneously projected by a first projection unit and a second projection unit among the multiple projection units 1902, with the images overlapping each other. This allows the projected image to be brighter. Also, by slightly shifting the overlapping, the image can be made to appear three-dimensional (3D) to the user.

[0730] The control unit may also divide the image to be projected into multiple parts and control the multiple projection units to simultaneously project each of the divided images. In this case, the projection direction of each projection unit 1902 can be adjusted manually or automatically.

[0731] The control unit may also be configured to detect that the neck speaker 1901 is being worn by the user, and to project an image if it is determined as a result of the detection that the neck speaker 1901 is being worn. This makes it possible to avoid unnecessary projection and save power consumption. If the user wants to project an image, he or she can wear the neck speaker 1901, and if the user does not want to project an image, he or she can remove the neck speaker 1901.

[0732] Whether or not the neck speaker 1901 is being worn can be determined, for example, by providing a contact sensor on the inside of the neck speaker 1901 at the part where the user's neck comes into contact, based on the detection result of the contact sensor.

[0733] Also, whether or not the neck speaker 1901 is attached is usually determined by the neck speaker A contact sensor may be provided in a portion that does not come into contact when 1901 is being worn, and a determination may be made based on the detection result of the contact sensor. More specifically, for example, if it is detected that the upper portion of neck speaker 1901 (the portion where speakers 1903a and 1903b are provided) is being contacted, it is presumed that neck speaker 1901 has been removed and is placed down, in which case it can be determined that neck speaker 1901 is not being worn. Therefore, in order to detect that it is not being worn, the user can remove neck speaker 1901 from the neck and place it upside down.

[0734] The control unit may also recognize that the user wearing the neck speaker 1901 is a pre-registered user, and if it determines as a result of the recognition that the user wearing the neck speaker 1901 is a pre-registered user, it may project an image.

[0735] This prevents image information addressed to the user from being projected even when an unregistered person other than the user wears the neck speaker 1901. This prevents information addressed to the user from being leaked without the user's permission.

[0736] Furthermore, the projection unit 1902 or the neck speaker 1901 itself may be provided with a reception unit that receives input of at least one of ID information and password information. Although not shown, the reception unit may be provided with a predetermined key on the projection unit 1902 or the neck speaker 1901, and input can be made by pressing or touching the key.

[0737] Furthermore, a contact sensor may be provided in the projection unit 1902 or the neck speaker 1901, and a predetermined manner of contact known only to the user (for example, the position of the touch, the number of touches, etc.) may be used as ID information or password information.

[0738] Based on the input information, the control unit determines whether the input ID information and password information match, and if the result of that determination is that they match, it can recognize that the user is a previously registered user.

[0739] Furthermore, the projection unit 1902 or the neck speaker 1901 may be provided with a voice receiving unit (not shown) that receives voice input from the user. Specifically, the voice receiving unit can be realized by, for example, the microphone 706.

[0740] The control unit may be configured to recognize that the user is a pre-registered user by voice recognition based on the input voice.

[0741] Furthermore, the control unit can detect contact with a predetermined location on the projection unit 1902 or the neck speaker 1901, and can start projecting an image if the detection result shows that contact has occurred. Specifically, the function of detecting contact with the projection unit 1902 or the neck speaker 1901 can be realized by, for example, a contact sensor or the like provided at a predetermined position on the projection unit 1902 or the neck speaker 1901.

[0742] In this way, the user can easily give an instruction to start image projection by touching a predetermined location on the projection unit 1902 or the neck speaker 1901.

[0743] Furthermore, the control unit detects that a predetermined location on the projection unit 1902 or the neck speaker 1901 has been touched, and if the detection result shows that the location has been touched, the control unit can stop the projection of the image that is being projected. By touching a predetermined location on 1901, it is possible to easily issue an instruction to stop (end) image projection.

[0744] The same contact sensor can be used to start and stop image projection. A first touch can start image projection, and a second touch on the same contact sensor can stop image projection. In this way, touching the same contact sensor can alternately start and stop projection.

[0745] Furthermore, an instruction to start projecting an image and an instruction to stop projecting an image can be given by separate contact sensors. Specifically, for example, touching a contact sensor provided on the projection unit 1902 may start projection of an image, and touching a contact sensor provided on the neck speaker 1901 may stop projection of the image.

[0746] In this way, the start and end of image projection can be instructed by a simple operation of touching the projection unit 1902 or the neck speaker 1901.

[0747] Although the image projection device 1900 is provided in the neck speaker 1901, the present invention is not limited to this.

[0748] For example, as shown in Fig. 20, a necklace-type neck projector 1900 may have a projection unit 1902 disposed on a necklace 2001 that a user wears around the neck. The necklace 2001 has a general necklace shape. Specifically, the necklace 2001 has a loop shape and is worn around the neck of the user by wrapping it around the neck. The shape, thickness (width), etc. of the necklace 2001 may be any shape that allows the projection unit 1902 to be attached.

[0749] 20, when the user wears the necklace 2001, the projection unit 1902 is attached to the center of the necklace 2001, that is, near the bottom of the user's chin when the necklace 2001 is worn, so that the projection unit 1902 faces the direction of the user's line of sight. The projection unit 1902 may also be attached to the necklace 2001 in a detachable manner.

[0750] As shown in Fig. 20, the necklace 2001 may have one projection unit 1902 located in the center, or, although not shown, may have multiple projection units. When multiple projection units 1902 are arranged, they may be arranged in the horizontal direction or in the vertical direction. Furthermore, they may be located in a position other than the center as long as they face the user's line of sight. For example, they may be located near the bottom of both ears, each facing the user's line of sight.

[0751] Furthermore, the control unit of the necklace-type neck projector 1900 may be provided in either the necklace 2001 or the projection unit 1902 .

[0752] 21, a pendant-type neck projector 1900 may be arranged so that the projection unit 1902 is hung (suspended) from a necklace 2101 worn by a user around the neck or a neck strap (not shown). That is, the projection unit 1902 may be provided in the pendant unit 2102. The projection unit 1902 may be provided in the pendant unit 2102, or the pendant unit 2102 may be the projection unit 1902 itself.

[0753] The necklace 2101 has a general necklace shape. The necklace 2101 or neck strap has a loop shape and is worn around the neck by wrapping it around the neck. There are no limitations on the shape (chain, string, etc.) or thickness (width) of the necklace 2101 or neck strap. These components may be any components to which the pendant part 2102 (projection part 1902) can be attached.

[0754] 21, only one projection unit 1902 is provided, but this is not limiting. A plurality (two or more) of projection units 1902 may be provided on the necklace 2101. When a plurality of projection units 1902 are provided, the projection directions of the respective projection units 2102 may be shifted so that the projected images do not overlap.

[0755] Furthermore, the control unit of the pendant-type neck projector 1900 may be provided in either the necklace 2101 or the pendant unit 2102 (projection unit 1902).

[0756] The necklace-type neck projector 1900 shown in FIG. 20 and the pendant-type neck projector 1900 shown in FIG. 21 are the same in other configurations and functions as the neck speaker-type neck projector 1900 shown in FIG. 19, so detailed explanations thereof will be omitted.

[0757] As described above, the image projection device of embodiment 6 of the present invention is characterized by being provided with a control unit that is provided on a component (neck speaker 1901, necklace 2001, necklace 2101 and pendant part 2102) that is worn around the user's neck, and that projects an image that is transmitted or distributed to the user, or that is pre-stored, onto any part of the user's body that the user's gaze is directed at, as a screen.

[0758] This allows the user to easily view a desired image at any part of their own body where the user's gaze is directed.

[0759] Furthermore, the image projection device of embodiment 6 of the present invention is characterized by being provided with a control unit that is provided on a component (neck speaker 1901, necklace 2001, necklace 2101 and pendant part 2102) that is worn around the neck of the user, and that projects an image that is transmitted or distributed to the user, or that is pre-stored, using the clothing worn on any part of the user's body at which the user's gaze is directed, as a screen.

[0760] This allows the user to easily view the desired image on the clothing worn on any part of the user's body that the user is looking at.

[0761] Furthermore, the image projection device of embodiment 6 of the present invention is characterized by being provided with a control unit that is provided on a component (neck speaker 1901, necklace 2001, necklace 2101 and pendant part 2102) that is worn around the user's neck, and that projects an image that is transmitted or distributed to the user, or that is pre-stored, using the surface toward which the user's gaze is directed as a screen.

[0762] This allows the user to easily view the desired image in the direction (position) in which the user's line of sight is directed.

[0763] Furthermore, the image projection device according to the sixth embodiment of the present invention is characterized in that the projection unit 1902 is detachably provided on the members (neck speaker 1901, necklace 2001, necklace 2101, and pendant unit 2102) that are worn around the neck of the user. This allows the projection unit 1902 to be detached when not needed and used as a normal neck speaker 1901.

[0764] The image projection device according to the sixth embodiment of the present invention is further characterized in that a plurality of projection units 1902 simultaneously project images.

[0765] This allows the user to view multiple images simultaneously.

[0766] The image projection device according to the sixth embodiment of the present invention is further characterized in that a first projection unit and a second projection unit among the plurality of projection units 1902 simultaneously project different images.

[0767] This allows the user to view different pieces of information simultaneously.

[0768] Furthermore, the image projection device according to the sixth embodiment of the present invention is further characterized in that a first projection unit and a second projection unit among the multiple projection units 1902 simultaneously project the same image in an overlapping manner.

[0769] This allows the projected image to be viewed brighter, and the user can enjoy a three-dimensional image.

[0770] Furthermore, the image projection device of embodiment 6 according to the present invention is further characterized in that the image to be projected is divided into multiple parts, and each of the multiple projection units simultaneously projects each of the divided images.

[0771] This allows the user to view the image without reducing the resolution.

[0772] Furthermore, the image projection device of embodiment 6 of the present invention is further characterized in that a battery is provided in the component (neck speaker 1901, necklace 2001, necklace 2101 and pendant part 2102) worn around the user's neck or in the device itself for receiving, storing and projecting images.

[0773] This allows the user to receive images, store the received images, and project and view the received and stored images while moving.

[0774] Furthermore, the image projection device of embodiment 6 of the present invention is further characterized in that the control unit detects that the user is wearing the components (neck speaker 1901, necklace 2001, necklace 2101, and pendant unit 2102), and if it determines as a result of the detection that neck speaker 1901 is being worn, projects an image.

[0775] This makes it possible to prevent an image from being projected in a position other than the desired position, and also makes it possible to reduce power consumption when projection is not required.

[0776] Furthermore, the image projection device of embodiment 6 of the present invention is further characterized in that the control unit recognizes that the user wearing the components (neck speaker 1901, necklace 2001, necklace 2101, and pendant unit 2102) is a pre-registered user, and if, as a result of the recognition, it is determined that the user wearing the components (neck speaker 1901, necklace 2001, necklace 2101, and pendant unit 2102) is a pre-registered user, it projects an image.

[0777] The image projection device according to the sixth embodiment of the present invention further includes members (neck speaker 1901, necklace 2001, necklace 2101, and pendant part 2102). Alternatively, the device may be provided with a reception unit that receives input of at least one of ID information and password information, and the control unit may recognize that the user is a pre-registered user based on the input information.

[0778] This makes it possible to prevent people other than the user from wearing the neck speaker 1901 and viewing the user's information.

[0779] Furthermore, the image projection device of embodiment 6 of the present invention is further characterized in that it has a voice receiving unit in the components (neck speaker 1901, necklace 2001, necklace 2101 and pendant unit 2102) or in the device itself that receives input of the user's voice, and the control unit recognizes that the user is a pre-registered user through voice recognition based on the input voice.

[0780] This allows the user to be easily recognized simply by speaking, simplifying the process of personal authentication.

[0781] Furthermore, the image projection device of embodiment 6 of the present invention is further characterized in that the control unit detects contact with a component (neck speaker 1901, necklace 2001, necklace 2101 and pendant unit 2102) or the device itself, and starts projecting an image when contact is detected as a result of the detection.

[0782] This allows a command to start image projection to be easily given by a simple gesture of touching the components (neck speaker 1901, necklace 2001, necklace 2101, and pendant part 2102) or the device itself.

[0783] Furthermore, the image projection device of embodiment 6 of the present invention is further characterized in that the control unit detects contact with a component (neck speaker 1901, necklace 2001, necklace 2101 and pendant unit 2102) or the device itself, and if contact is detected as a result of the detection, stops projecting the image.

[0784] This allows a user to easily issue a command to stop the projection of an image being projected by simply touching the components (neck speaker 1901, necklace 2001, necklace 2101, and pendant part 2102) or the device itself.

[0785] The image projection device according to the sixth embodiment of the present invention is characterized in that the member is a horseshoe-shaped neck speaker 1901 that is attached to the neck by passing the opening from behind the neck.

[0786] This allows the neck speaker 1901 to be used as a projector, making it easier to project images, videos, and the like.

[0787] The image projection device according to the sixth embodiment of the present invention is characterized in that the member is a necklace 2001 that has a loop shape and is worn around the neck by wrapping it around the neck.

[0788] This allows the necklace 2001 to be used as a projector, making it easier to project images, videos, and the like.

[0789] In the image projection device according to the sixth embodiment of the present invention, the member is a necklace 2101 or a neck strap that has a loop shape and is worn around the neck by being wrapped around the neck. It is a wrap, characterized in that the control unit is attached so as to hang from a necklace 2101 or neck strap.

[0790] This allows the pendant 2102 that is hung from the necklace 2101 or the neck strap to be used as a projector, making it possible to project images, videos, etc. more easily.

[0791] The image projection method described in this sixth embodiment can be realized by executing a prepared program on a computer such as a personal computer or a workstation. This program is recorded on a computer-readable recording medium such as a hard disk, CD-ROM, MO, DVD, USB memory, or SSD, and is executed by being read from the recording medium by the computer. This program may also be a transmission medium that can be distributed via a network such as the Internet.

[0792] The contents of the sixth embodiment will be described below as an appendix.

[0793] (Appendix 633) provided on a member worn around the neck of the user, An image projection device characterized by having a control unit that projects an image that is transmitted or distributed to the user, or that is pre-stored, onto any part of the user's body that the user's gaze is directed at as a screen.

[0794] (Appendix 634) provided on a member worn around the neck of the user, An image projection device characterized by having a control unit that projects an image that is transmitted, distributed, or pre-stored to the user using the clothing worn on any part of the user's body at which the user's gaze is directed as a screen.

[0795] (Appendix 635) provided on a member worn around the neck of the user, An image projection device characterized by comprising a control unit that projects an image that is transmitted or distributed to the user, or that is pre-stored, onto a surface that the user's gaze is directed at as a screen.

[0796] (Appendix 636) 636. The image projection device according to any one of appendices 633 to 635, wherein the projection unit is detachably provided on the member.

[0797] (Appendix 637) 7. The image projection device according to any one of appendices 633 to 636, wherein the images are simultaneously projected by a plurality of the projection units.

[0798] (Appendix 638) The image projection device described in Appendix 637, characterized in that different images are simultaneously projected by a first projection unit and a second projection unit among the multiple projection units.

[0799] (Appendix 639) The image projection device described in Appendix 637, characterized in that a first projection unit and a second projection unit among the multiple projection units simultaneously project the same image in an overlapping manner.

[0800] (Appendix 640) An image projection device as described in appendix 637, characterized in that the image to be projected is divided into multiple parts, and each of the multiple projection units simultaneously projects each of the divided images.

[0801] (Appendix 641) An image projection device according to any one of appendices 633 to 640, characterized in that the component or the device itself is provided with a battery for receiving, storing, and projecting images.

[0802] (Appendix 642) The control unit Detecting that the member is attached to the neck of the user; 642. The image projection device according to any one of appendices 633 to 641, wherein the image is projected when it is determined that the member is attached as a result of the detection.

[0803] (Appendix 643) The control unit Recognizing that the user wearing the component is a pre-registered user, An image projection device described in any one of Appendices 633 to 642, characterized in that if, as a result of the recognition, it is determined that the user wearing the component is a pre-registered user, the image is projected.

[0804] (Appendix 644) The member or the device itself is provided with a receiving unit that receives input of at least one of ID information and password information, The image projection device described in Appendix 643, characterized in that the control unit recognizes that the user is a pre-registered user based on the input information.

[0805] (Appendix 645) The component or the device itself is provided with a voice receiving unit that receives voice input from a user, The image projection device described in Appendix 643, characterized in that the control unit recognizes that the user is a pre-registered user through voice recognition based on the input voice.

[0806] (Appendix 646) The control unit Detecting contact with the member or the device itself; The image projection device according to any one of appendices 633 to 645, wherein, when a contact is made as a result of the detection, projection of the image is started.

[0807] (Appendix 647) The control unit Detecting contact with the member or the device itself; 7. The image projection device according to any one of appendices 633 to 646, wherein, if the result of the detection indicates that contact has occurred, projection of the image is stopped.

[0808] (Appendix 648) The image projection device according to any one of appendices 633 to 647, wherein the member is a horseshoe-shaped neck speaker that is attached to the neck by passing the opening from behind the neck.

[0809] (Appendix 649) The image projection device according to any one of appendices 633 to 647, wherein the member is a loop-shaped necklace that is worn around the neck by being wrapped around the neck.

[0810] (Appendix 650) the member is a loop-shaped necklace or neck strap that is worn around the neck by wrapping around the neck, The image projection device according to any one of claims 633 to 647, wherein the control unit is provided so as to be suspended from the member. [Industrial Applicability]

[0811] As described above, the image projection method, image projection device, unmanned aerial vehicle, and image projection program of the present invention are useful for image projection methods, image projection devices, unmanned aerial vehicle, and image projection programs that project images, and are particularly suitable for image projection methods, image projection devices, unmanned aerial vehicle, and image projection programs that project images using the body as a screen. [Explanation of symbols]

[0812] 110, 120 Palmtop Screen 200 Image projection device (drone projector) 201 users 400 Arm Top Screen 500 List Top Screen 601 Projector 602 Drone 603 Camera 604 Human Sensor 801 User Instruction Reception Unit 802 Projection target user identification unit 803 Body part information acquisition unit 804 Projection image information acquisition unit 805 Body part identification section 806 Projection position and projection dimension determination unit 807 Warning Output Unit 808 Movement position / projection angle determination unit 809 Movement and projection angle control unit 810 Image information projection unit 811 Projection image capturing unit 812 Instruction output unit 1000 Image projection device (movable projector) 1100 Image projection device (glass projector) 1101a, 1101b, 1102, 1103a, 1103b, 1104a, 1104b, 1201, 1202 Projection section 1300 Image projection device (earphone projector) 1301 Projection section 1302 (In-Ear Insertion) Earpiece 1500 Image projection device (wearable projector) 1501 Projection section 1502 Main unit 1503 Mounting part 1600 Image projection device (hat projector) 1601 Projection section 1602 Mounting part 1603 hat 1900 Image projection device (neck projector) 1901 Neck Speaker 1902 Projection section 2001, 2101 Necklace 2102 Pendant part

Claims

[Claim 1] An eyeglass-type image projection device, a projection unit provided on the eyeglass frame for projecting an image; a receiving unit that receives information addressed to the user; a storage unit that stores the information received by the receiving unit; a control unit that controls the projection unit to project an image according to the information received by the receiving unit or the image according to the information stored in the storage unit; Equipped with The control unit detects that the eyeglass frame is being worn by the user, An image projection device, characterized in that, when it is determined as a result of the detection that the eyeglass frame is being worn, the image projection device projects the image.

Images