Method for controlling projection device, and projection device

Abstract

To solve the problem in which: since an image is not projected on a projection range other than a projectable area, the projection range other than the projectable area is not effectively used.SOLUTION: A method for controlling a projection device includes: setting a first projectable area where a first image based on first image data can be projected; executing correction of the first image data on the basis of the first projectable area; setting a second projectable area different from the first projectable area; projecting the first image on the first projectable area; and projecting a second image based on second image data on the second projectable area.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to a projection device control method and a projection device. [Background technology]

[0002] Projection-type image display systems that project an image onto a projection surface are known. The projection-type image display system described in Patent Document 1 includes a sensor that senses the projection target area. The projection-type image display system determines the projectable area based on sensing information from the sensor. The projectable area is an area that is free of obstacles and satisfies a predetermined aspect ratio. The projection-type image display system projects a projection image into the projectable area. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-323084 Summary of the Invention [Problem to be solved by the invention]

[0004] Since an image is not projected onto a projection range outside the projectable area, the projection range outside the projectable area is not effectively utilized. [Means for solving the problem]

[0005] The control method for a projection device disclosed herein includes setting a first projectable area into which a first image based on first image data can be projected, correcting the first image data based on the first projectable area, setting a second projectable area different from the first projectable area, projecting the first image into the first projectable area, and projecting a second image based on second image data into the second projectable area.

[0006] The projection device of the present disclosure includes a control unit and a projection unit, wherein the control unit sets a first projectable area into which a first image based on first image data can be projected, corrects the first image data based on the first projectable area, and sets a second projectable area different from the first projectable area, and the projection unit projects the first image into the first projectable area and projects a second image based on second image data into the second projectable area. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a diagram showing a schematic configuration of a projection system. [Figure 2] FIG. 1 is a block diagram showing the configuration of a projection system. [Figure 3] FIG. 1 is a diagram showing a schematic configuration of an image projection device. [Figure 4] FIG. 10 is a diagram showing an example of a setting screen. [Figure 5] FIG. 3 is a diagram showing a control flow of the projector. [Figure 6] FIG. 3 is a diagram showing an example of a projection image projected onto a projection surface. [Figure 7] FIG. 3 is a diagram showing an example of a projection image projected onto a projection surface. [Figure 8] FIG. 3 is a diagram showing an example of a projection image projected onto a projection surface. [Figure 9] FIG. 3 is a diagram showing an example of a projection image projected onto a projection surface. [Figure 10] FIG. 3 is a diagram showing an example of a projection image projected onto a projection surface. [Figure 11] FIG. 3 is a diagram showing an example of a projection image projected onto a projection surface. [Figure 12] FIG. 3 is a diagram showing an example of a projection image projected onto a projection surface. [Figure 13] FIG. 3 is a diagram showing an example of a projection image projected onto a projection surface. DETAILED DESCRIPTION OF THE INVENTION

[0008] FIG. 1 shows a schematic configuration of a projection system 1. The projection system 1 includes a projector 10, a control device 100, and an image providing device 200. The projector 10 projects a projection image PG onto a projection surface SC. The projection image PG corresponds to an example of a first image. The projection system 1 shown in FIG. 1 includes, but is not limited to, the control device 100 and the image providing device 200. The projection system 1 does not necessarily have to include at least one of the control device 100 and the image providing device 200.

[0009] Several figures, including FIG. 1, show an XYZ coordinate system. The X axis is perpendicular to the projection surface SC. The +X direction is the direction toward the back from the projection surface SC. The -X direction is the direction toward the front from the projection surface SC. The Y axis is parallel to the projection surface SC. The Y axis is perpendicular to the X axis. The +Y direction is the direction from left to right of the projection surface SC shown in FIG. 1. The -Y direction is the direction from right to left of the projection surface SC shown in FIG. 1. The Z axis is parallel to the projection surface SC. The Z axis is perpendicular to the X and Y axes. The +Z direction is the direction from bottom to top of the projection surface SC shown in FIG. 1. The -Z direction is the direction from top to bottom of the projection surface SC shown in FIG. 1.

[0010] The projection surface SC displays the projection image PG projected from the projector 10. The projection surface SC shown in FIG. 1 is configured as a screen, but is not limited to this. The projection surface SC may be an indoor wall, a ceiling, the exterior wall of a building, etc. The shape of the projection surface SC is not limited to a flat surface, but may be a three-dimensional shape such as a curved surface, a surface with irregularities, or a spherical surface.

[0011] The projector 10 projects a projection image PG onto the projection surface SC. The projector 10 is disposed at a position facing the projection surface SC. The projector 10 is connected to the control device 100 and the image providing device 200. The projector 10 receives projection image data transmitted from the image providing device 200, etc. The projector 10 projects a projection image PG based on the projection image data onto the projection surface SC. The projector 10 corresponds to an example of a projection device. The projection image data corresponds to an example of first image data. The projector 10 includes an imaging unit 15.

[0012] The imaging unit 15 captures an image of the projection surface SC. The imaging unit 15 captures the projection surface SC including the projection image PG, and captures the entire projection image PG. The imaging unit 15 generates imaging data by capturing an image of the projection surface SC. The imaging data corresponds to an example of imaging information. The imaging unit 15 has an imaging element such as a CMOS (Complementary Metal Oxide Semiconductor) or a CCD (Charge Coupled Device). The imaging unit 15 shown in FIG. 1 is provided in the projector 10, but is not limited to this. The imaging unit 15 may also be configured as a separate unit from the projector 10.

[0013] The control device 100 is communicably connected to the projector 10. The control device 100 runs a setting program SP that performs various settings related to the projector 10. The setting program SP will be described later. The control device 100 is configured as a mobile computer, a desktop computer, a tablet terminal, a smartphone, or the like. The control device 100 shown in FIG. 1 is a mobile computer. The control device 100 may transmit projection image data to the projector 10 to project a projection image PG.

[0014] The image providing device 200 provides projection image data to the projector 10. The image providing device 200 is connected to the projector 10. The image providing device 200 is configured from a DVD (Digital Versatile Disc) player, a Blu-ray Disc player, a mobile computer, etc. When the control device 100 transmits projection image data to the projector 10, the image providing device 200 does not need to be provided in the projection system 1.

[0015] Fig. 2 shows a block configuration of the projection system 1. Fig. 2 shows a projector 10, a control device 100, and an image providing device 200. The projector 10 is connected to the control device 100 and the image providing device 200 for communication.

[0016] The projector 10 includes a communication interface 11, an imaging unit 15, an operation panel 17, a control unit 20, an image projection device 30, and a memory 40. The projector 10 may also include a receiving unit that receives an operation signal from a remote control (not shown).

[0017] The communication interface 11 is an interface circuit that connects and communicates with the control device 100 and the image providing device 200. The communication interface 11 connects to the control device 100 and the like via a wired or wireless connection in accordance with a predetermined communication protocol. The communication interface 11 includes a wired connector, a wireless communication port, and the like. The wired connector is an HDMI (High-Definition Multimedia Interface) connector, a USB (Universal Serial Bus) connector, a LAN (Local Area Network) connector, and the like. The wireless communication port is a Wi-Fi communication port, a Bluetooth communication port, and the like. HDMI, Wi-Fi, and Bluetooth are registered trademarks. The communication interface 11 receives projection image data from the image providing device 200 and the like. The communication interface 11 receives sub-image data and the like from the control device 100. The communication interface 11 transmits various data to the control device 100.

[0018] The operation panel 17 has a plurality of operation buttons, such as a power button, a menu button, a back button, an operation decision button, a selection button, an adjustment button, an initial value button, a keystone correction button, etc. The operation buttons accept input operations by the user.

[0019] The control unit 20 is a controller that controls the projector 10. As an example, the control unit 20 is a processor having a CPU (Central Processing Unit). The control unit 20 is composed of one or more processors. The control unit 20 corresponds to an example of a control unit. The control unit 20 may have semiconductor memory such as a ROM (Read Only Memory) or a RAM (Random Access Memory). The semiconductor memory functions as a work area for the control unit 20. By executing the control program CP, the control unit 20 functions as an area setting unit 21, an image processing unit 23, and a projection control unit 25. By executing the control program CP, the control unit 20 may function as a functional unit other than the area setting unit 21, the image processing unit 23, and the projection control unit 25.

[0020] The area setting unit 21 sets an area in which the projection image PG and the sub-image SG are projected. The projection image PG is projected based on projection image data transmitted from the image providing device 200 or the like. The sub-image SG is projected based on the sub-image data. The area setting unit 21 acquires the imaging data generated by the imaging unit 15 and the projection image data. The area setting unit 21 analyzes the imaging data to acquire projection information such as the shape of the projection image PG projected on the projection surface SC, the presence or absence of obstacles SM, and the position of the obstacles SM. The area setting unit 21 acquires the aspect ratio of the projection image PG projected based on the projection image data. The aspect ratio is the ratio between the length of the projection image PG along the Y axis corresponding to the horizontal axis and the length of the projection image PG along the Z axis corresponding to the vertical axis. The area setting unit 21 sets an image display area DA and a non-image area EA included in the projection area PA based on the projection information and the aspect ratio of the projection image PG.

[0021] The projection area PA is an area where the projector 10 can project onto the projection surface SC. The projection area PA is an area where the projection image PG before correction such as keystone correction is projected onto the projection surface SC. The projection area PA is an area where the projection image PG is projected onto the projection surface SC regardless of whether an obstacle SM is present or not.

[0022] The image display area DA is an area onto which a rectangular projection image PG can be projected. The image display area DA is an area on the projection surface SC onto which the projection image PG that has been subjected to keystone correction and other corrections is projected. The image display area DA is an area onto which the projection image PG that has avoided obstacles SM is projected. The image display area DA is an area with an aspect ratio that is the same as or approximately the same as the aspect ratio included in the projection image data. The image display area DA corresponds to an example of a first projectable area.

[0023] The non-image area EA is an area within the projection area PA onto which the rectangular projection image PG is not projected. The non-image area EA is an area within the projection area PA onto which the projection image PG that has undergone keystone correction or other corrections is not projected. The non-image area EA is an area within the projection area PA onto which the projection image PG that has avoided an obstacle SM is not projected.

[0024] The area setting unit 21 acquires the size and shape of the non-image area EA. The area setting unit 21 sets a sub-image display area SA in which the sub-image SG is projected within the non-image area EA. The sub-image display area SA corresponds to an example of a second projectable area.

[0025] The area setting unit 21 acquires setting data SE. The setting data SE is stored in advance in the memory 40. The area setting unit 21 sets a sub-image display area SA based on the setting data SE. After setting a sub-image SG based on the setting data SE, the area setting unit 21 sets the sub-image display area SA, into which the set sub-image SG is projected, within the non-image area EA. Alternatively, the area setting unit 21 sets the sub-image display area SA within the non-image area EA based on the setting data SE, and then sets the sub-image SG, which is to be projected in the sub-image display area SA. The sub-image SG corresponds to an example of the second image. The sub-image data corresponds to an example of the second image data.

[0026] When a subimage SG is set based on the setting data SE, the region setting unit 21 acquires the subimage aspect ratio of the set subimage SG. The subimage aspect ratio is stored in the subimage data. The subimage aspect ratio may be calculated by the region setting unit 21 using the subimage data. The subimage aspect ratio corresponds to an example of the aspect ratio of the second image. The region setting unit 21 sets the subimage display region SA based on the subimage aspect ratio of the subimage SG and the size of the subimage SG. The region setting unit 21 sets the shape of the subimage display region SA corresponding to the subimage aspect ratio. The region setting unit 21 sets the size of the subimage display region SA corresponding to the size of the subimage SG.

[0027] When the sub-image display area SA is set based on the setting data SE, the area setting unit 21 calculates the shape and size of the non-image area EA. Based on the shape and size of the non-image area EA, the area setting unit 21 selects a sub-image SG that can be projected into the non-image area EA. The area setting unit 21 selects one display data DG as sub-image data from among the multiple display data DG stored in the memory 40. The area setting unit 21 sets the display image to be projected based on the display data DG selected as the sub-image data as the sub-image SG.

[0028] The image processing unit 23 corrects the projected image PG and the sub-image SG. The image processing unit 23 acquires the imaging data generated by the imaging unit 15. The image processing unit 23 performs correction processing such as keystone correction on the projected image PG based on the imaging data. The image processing unit 23 may also perform correction processing such as keystone correction based on input data input to the operation panel 17.

[0029] The image processing unit 23 acquires area data indicating the image display area DA and the non-image area EA from the area setting unit 21. The image processing unit 23 corrects the projection image PG and the sub-image SG based on the area data. The image processing unit 23 performs corrections such as resolution adjustment on the projection image data. The image processing unit 23 performs corrections such as size adjustment on the sub-image data. The image processing unit 23 transmits the corrected projection image data and the corrected sub-image data to the projection control unit 25.

[0030] The projection control unit 25 controls projection by the image projection device 30. The projection control unit 25 controls projection by the image projection device 30 based on the projection image data and sub-image data transmitted from the image processing unit 23. The projection control unit 25 controls the image projection device 30 to project a projection image PG onto the projection surface SC. The projection control unit 25 controls the image projection device 30 to project a sub-image SG based on the sub-image data onto the projection surface SC.

[0031] The image projection device 30 forms image light according to the projection image data and sub-image data. The image projection device 30 enlarges and projects the image light onto the projection surface SC. The image projection device 30 projects a projection image PG onto an image display area DA on the projection surface SC under the control of the control unit 20. The image projection device 30 projects a sub-image SG onto a sub-image display area SA within a non-image area EA on the projection surface SC under the control of the control unit 20. The image projection device 30 corresponds to an example of a projection unit. A detailed configuration of the image projection device 30 will be described later.

[0032] The memory 40 stores various programs and various data. The memory 40 stores a control program CP, display data DG, and setting data SE. The memory 40 may also store projection image data transmitted from the image providing device 200, etc. The memory 40 is composed of RAM, ROM, etc.

[0033] The control program CP is firmware that causes the control unit 20 to function as various functional units. The control program CP causes the control unit 20 to function as the area setting unit 21, the image processing unit 23, and the projection control unit 25. The control program CP may also cause the control unit 20 to function as functional units other than the area setting unit 21, the image processing unit 23, and the projection control unit 25.

[0034] The display data DG is data for projecting a display image. The display data DG includes a display image aspect ratio that indicates the aspect ratio of the display image. The display data DG is stored in advance in the memory 40 of the projector 10. The display data DG may be transmitted from the control device 100. The memory 40 stores a plurality of pieces of display data DG. The display data DG stored in the memory 40 corresponds to an example of OSD image data. OSD is an abbreviation for On Screen Display. The display data DG is read out to the area setting unit 21 as sub-image data.

[0035] The setting data SE includes various setting values ​​related to the projector 10. The setting data SE includes setting values ​​related to the sub-image SG. The setting data SE is transmitted from the control device 100 to the communication interface 11. The memory 40 receives and stores the setting data SE via the communication interface 11.

[0036] Fig. 3 shows a schematic configuration of an image projection device 30. Fig. 3 shows an example of the image projection device 30. The image projection device 30 includes a light source 31, three liquid crystal light valves 33, a light valve driver 35, and a projection lens 37.

[0037] The light source 31 emits light to the liquid crystal light valve 33. The light source 31 includes a light source unit 31a, a reflector 31b, an integrator optical system (not shown), and a color separation optical system (not shown). The light source unit 31a emits light. The light source unit 31a is composed of a xenon lamp, an ultra-high pressure mercury lamp, an LED (Light Emitting Diode), a laser light source, or the like. The light source unit 31a emits light under the control of the control unit 20. The reflector 31b reduces variation in the emission direction of the light emitted by the light source unit 31a. The integrator optical system reduces variation in the luminance distribution of the light emitted from the light source unit 31a. The light that passes through the reflector 31b enters the color separation optical system. The color separation optical system separates the incident light into red, green, and blue color light components.

[0038] The liquid crystal light valve 33 modulates the light emitted from the light source 31. The liquid crystal light valve 33 generates a projected image PG by modulating the light. The liquid crystal light valve 33 is composed of a transmissive liquid crystal panel or the like in which liquid crystal is sealed between a pair of transparent substrates. The liquid crystal light valve 33 has a rectangular pixel region 33a including a plurality of pixels PL arranged in a matrix. In the liquid crystal light valve 33, a drive voltage is applied to the liquid crystal for each pixel PL. The image projection device 30 shown in FIG. 3 has three liquid crystal light valves 33. Although the image projection device 30 is configured to use a transmissive liquid crystal panel equipped with the liquid crystal light valve 33, this is not limiting. The image projection device 30 may also have a reflective liquid crystal panel or an LCOS (Liquid Crystal On Silicon) liquid crystal panel. The image projection device 30 may also have one or more DMDs (Digital Mirror Devices).

[0039] The three liquid crystal light valves 33 are a red light liquid crystal light valve 33R, a green light liquid crystal light valve 33G, and a blue light liquid crystal light valve 33B. The red color light component separated by the color separation optical system is incident on the red light liquid crystal light valve 33R. The green color light component separated by the color separation optical system is incident on the green light liquid crystal light valve 33G. The blue color light component separated by the color separation optical system is incident on the blue light liquid crystal light valve 33B.

[0040] The light valve driver 35 applies a drive voltage to each pixel PL based on the projection image data received from the control unit 20. The light valve driver 35 is, for example, a control circuit. The drive voltage is supplied by a drive source (not shown). The light valve driver 35 may apply the drive voltage to each pixel PL based on the projection image data corrected by the image processing unit 23. When the light valve driver 35 applies the drive voltage to each pixel PL, the light transmittance of each pixel PL is set based on the projection image data. The light emitted from the light source 31 is modulated by passing through the pixel region 33a. The three liquid crystal light valves 33 form color component images for each color light.

[0041] The projection lens 37 combines and enlarges the color component images formed by the liquid crystal light valve 33. The projection lens 37 projects the projection image PG onto the projection surface SC. The projection image PG is a multi-color image obtained by combining the color component images.

[0042] The control device 100 shown in FIG. 2 includes a device communication interface 110, an input / output unit 120, a device control unit 130, and a device memory 140.

[0043] The device communication interface 110 is an interface circuit that connects and communicates with the projector 10 and the like. The device communication interface 110 connects to the projector 10 via a wired or wireless connection in accordance with a predetermined communication protocol. The device communication interface 110 includes a wired connector, a wireless communication port, and the like. The wired connector is an HDMI connector, a USB connector, a LAN connector, and the like. The wireless communication port is a Wi-Fi communication port, a Bluetooth communication port, and the like. The device communication interface 110 receives various data from the projector 10. The device communication interface 110 transmits setting data SE and the like to the projector 10.

[0044] The input / output unit 120 transmits or receives various types of data. The input / output unit 120 is connected to input devices such as a mouse and a keyboard. The input devices are not shown. The input / output unit 120 receives input data input via the input devices. The input / output unit 120 is connected to a display device such as a liquid crystal display. The display device is not shown. The input / output unit 120 transmits image data to the display device. By transmitting the image data, the input / output unit 120 causes the display device to display an image based on the image data.

[0045] The device control unit 130 is a device control controller that controls the control device 100. As an example, the device control unit 130 is a processor having a CPU. The device control unit 130 is composed of one or more processors. The device control unit 130 may have semiconductor memory such as ROM and RAM. The semiconductor memory functions as a work area for the device control unit 130. The device control unit 130 functions as a display control unit 131 and a setting control unit 133 by executing the setting program SP. The device control unit 130 may function as a functional unit other than the display control unit 131 and the setting control unit 133 by executing the setting program SP.

[0046] The display control unit 131 controls the display of various setting screens displayed on the display device. The display control unit 131 causes the display device to display various setting screens related to the settings of the projector 10. The various setting screens include a sub-image setting screen 300. The sub-image setting screen 300 will be described later. The display control unit 131 causes the display device to display the setting screens, thereby allowing the user of the control device 100 to perform various settings related to the projector 10.

[0047] The setting control unit 133 generates setting data SE. The setting control unit 133 generates various setting values ​​based on input data input to various setting screens by an input device. The setting control unit 133 generates setting data SE including the various setting values. The setting control unit 133 transmits the setting data SE to the projector 10 via the device communication interface 110.

[0048] The setting control unit 133 may store the setting image data GD in the projector 10 as display data DG. The setting control unit 133 transmits the setting image data GD to the projector 10 via the device communication interface 110. The setting control unit 133 stores the setting image data GD in the memory 40 of the projector 10 as display data DG. The setting control unit 133 may generate setting image data GD that can be used as sub-image data. When the setting control unit 133 generates the setting image data GD, it stores the setting image data GD in the device memory 140. The setting control unit 133 may process the setting image data GD stored in the device memory 140.

[0049] The device memory 140 stores various programs and various data. The device memory 140 stores a setting program SP and setting image data GD. The device memory 140 may also store projection image data. The device memory 140 is composed of RAM, ROM, etc.

[0050] The setting program SP generates various setting values ​​related to the projector 10. The setting program SP is executed by the device control unit 130. By executing the setting program SP, various setting screens are displayed on the display unit. By executing the setting program SP, various setting values ​​can be set. The various setting values ​​include sub-image setting values.

[0051] The setting image data GD is data that can be projected as sub-image data. As an example, when the setting program SP is executed, the setting image data GD is stored in the device memory 140. The setting image data GD is transmitted to the projector 10 under the control of the setting control unit 133. The transmitted setting image data GD is stored in the memory 40 as display data DG. The setting image data GD may be generated by the setting control unit 133. The setting image data GD may also be received from an external device such as an external server.

[0052] The image providing device 200 is communicatively connected to the communication interface 11. The image providing device 200 transmits projection image data to the communication interface 11. Based on the projection image data transmitted from the image providing device 200 to the projector 10, the projector 10 projects a projection image PG onto the image display area DA.

[0053] Fig. 4 shows an example of a setting screen. Fig. 4 shows a sub-image setting screen 300, which is an example of a setting screen. The sub-image setting screen 300 is displayed on a display device connected to the input / output unit 120. The sub-image setting screen 300 is displayed on the display device when the user of the control device 100 performs a predetermined operation on an input device.

[0054] The sub-image setting screen 300 is a screen for setting the sub-image SG. The setting values ​​set on the sub-image setting screen 300 are included in the setting data SE. The sub-image setting screen 300 includes a manual selection button 301, a first selected image display field 303, a second selected image display field 305, an automatic selection button 311, and a complete button 321. The sub-image setting screen 300 also includes a third selected image display field (not shown).

[0055] The manual selection button 301 accepts an input operation by the user. The manual selection button 301 is a button that allows the user to manually select a sub-image SG. When an input operation is performed on the manual selection button 301, manual selection is selected as the setting value. When manual selection is selected, input operations can be performed on the first selected image display field 303, the second selected image display field 305, and the third selected image display field. The user can manually select a sub-image SG.

[0056] The first selected image display field 303 accepts an input operation by the user. The first selected image display field 303 displays the selected image name 304a and selected image aspect ratio 304b of the selected image selected by the user. The first selected image display field 303 displays the selected image name 304a and selected image aspect ratio 304b of the selected image with the first priority.

[0057] The selected image name 304a is the name of the image. The control device 100 acquires the name of the display image to be projected based on the display data DG stored in advance in the memory 40 of the projector 10. The display image is projected by the projector 10 as a sub-image SG. The name of the display image is included in the display data DG, as an example. The control device 100 may acquire the file name of the display data DG as the name of the image. The first selected image display field 303 displays the name of the display image as the selected image name 304a. The selected image name 304a may also be the image name of the image to be projected based on the setting image data GD stored in the device memory 140.

[0058] The selected image aspect ratio 304b indicates the aspect ratio of the selected image corresponding to the selected image name 304a. The first selected image display field 303 displays the selected image aspect ratio 304b, but it does not have to display it. It is preferable that the first selected image display field 303 displays the selected image aspect ratio 304b. By visually checking the selected image aspect ratio 304b, the user can infer the shape of the selected image.

[0059] The second selected image display field 305 accepts input operations by the user. The second selected image display field 305 can display a selected image name 304a and a selected image aspect ratio 304b of the selected image selected by the user. The second selected image display field 305 displays a selected image name 304a and a selected image aspect ratio 304b of the selected image with second priority. The second selected image display field 305 shown in FIG. 4 displays an image selection field 306.

[0060] The image selection field 306 is displayed when the user performs a predetermined input operation. The image selection field 306 accepts the input operation by the user. The image selection field 306 displays a plurality of selected image names 304a and selected image aspect ratios 304b corresponding to each of the plurality of selected image names 304a. The selected image names 304a displayed in the image selection field 306 can be selected by the user. When one of the plurality of selected image names 304a is selected, the selected selected image name 304a and the selected image aspect ratio 304b corresponding to the selected image name 304a are displayed in the second selected image display field 305.

[0061] A third selected image display field (not shown) accepts input operations by the user. The third selected image display field can display a selected image name 304a and a selected image aspect ratio 304b of the selected image selected by the user. The third selected image display field displays the selected image name 304a and a selected image aspect ratio 304b of the selected image with third priority.

[0062] The automatic selection button 311 accepts an input operation by the user. The automatic selection button 311 is a button that allows the user to automatically select a sub-image SG. When an input operation is performed on the automatic selection button 311, automatic selection is selected as a setting value. When automatic selection is set as a setting value included in the setting data SE, the control unit 20 of the projector 10 sets the sub-image SG to be displayed in the non-image area EA according to the shape and size of the non-image area EA. The control unit 20 sets, as sub-image data, the display data DG that projects a display image corresponding to the shape and size of the non-image area EA, from among the multiple display data DG stored in the memory 40.

[0063] The Complete button 321 accepts an input operation by the user. When an input operation is performed on the Complete button 321, the setting control unit 133 acquires the settings displayed on the sub-image setting screen 300 as setting values. When the user selects manual selection and causes the selected image name 304a to be displayed in the first selected image display field 303, the setting control unit 133 generates setting data SE including manual selection and the display data DG corresponding to the selected image name 304a as setting values ​​for the sub-image SG. The setting control unit 133 transmits the setting data SE to the projector 10. When the user selects manual selection and causes the selected image name 304a corresponding to the setting image data GD to be displayed in the first selected image display field 303, the setting control unit 133 generates setting data SE including manual selection and the setting image data GD corresponding to the selected image name 304a as setting values ​​for the sub-image SG. The setting control unit 133 transmits the setting data SE and the selected setting image data GD to the projector 10. When the user selects automatic selection, the setting control unit 133 generates setting data SE including automatic selection as a setting value. The setting control unit 133 transmits the setting data SE to the projector 10.

[0064] Fig. 5 shows the control flow of the projector 10. Fig. 5 shows the control flow performed by the projector 10 when projecting a sub-image SG onto the non-image area EA. Fig. 5 shows the control flow in the form of a flowchart. The control flow corresponds to an example of a control method.

[0065] In step S101, the projector 10 projects a projection image PG. The projector 10 projects the projection image PG based on the projection image data onto the projection surface SC. The projector 10 projects the projection image PG before correction processing onto the projection surface SC. The projection image data is, for example, data for projecting a test image such as a grid image. The projection image data may be data stored in advance in the memory 40, or may be data transmitted from the image providing device 200 or the like.

[0066] After projecting the projection image PG, the projector 10 acquires imaging data in step S103. The imaging unit 15 captures an image of the projection surface SC onto which the projection image PG is projected, and generates the imaging data. The imaging unit 15 transmits the imaging data to the control unit 20. The area setting unit 21 of the control unit 20 acquires the imaging data.

[0067] After acquiring the imaging data, the projector 10 determines in step S105 whether or not there is an obstacle SM overlapping the projection image PG. The area setting unit 21 analyzes the imaging data. The area setting unit 21 determines whether or not there is an obstacle SM overlapping the projection image PG included in the imaging data. If the area setting unit 21 determines that there is no obstacle SM overlapping the projection image PG, the process proceeds to step S107 (step S105: NO). If the area setting unit 21 determines that there is an obstacle SM overlapping the projection image PG, the process proceeds to step S111 (step S105: YES).

[0068] In step S107, the projector 10 determines whether the projection image PG is rectangular. The area setting unit 21 determines whether the projection image PG included in the captured data is rectangular. If the area setting unit 21 determines that the projection image PG is not rectangular, the process proceeds to step S109 (step S107: NO). If the area setting unit 21 determines that the projection image PG is rectangular, the process ends the control flow (step S107: YES). The projector 10 does not project the sub-image SG.

[0069] After determining that the projected image PG is not rectangular, the projector 10 executes a correction process in step S109. The image processing unit 23 executes a correction process such as keystone correction on the projected image PG. The image processing unit 23 executes a correction process to deform the projected image PG into a rectangle. The image processing unit 23 may execute the correction process based on the captured data, or may execute the correction process based on an input operation by the user. After executing the correction process, the projector 10 proceeds to step S111.

[0070] In step S111, the projector 10 sets the image display area DA. The area setting unit 21 sets the image display area DA based on the projection image PG included in the captured data. The area setting unit 21 sets the image display area DA depending on the presence or absence of an obstacle SM or the shape of the projection image PG.

[0071] If there is an obstacle SM that overlaps with the projection image PG, the area setting unit 21 detects an avoidance area within the projection area PA that avoids the obstacle SM. The area setting unit 21 acquires the aspect ratio of the projection image PG. The aspect ratio of the projection image PG is calculated, for example, based on the projection image data. The area setting unit 21 sets an image display area DA within the avoidance area into which the projection image PG can be projected. The aspect ratio of the image display area DA is the same as or approximately the same as the aspect ratio of the projection image PG. The area setting unit 21 sets the area of ​​the projection area PA other than the image display area DA as a non-image area EA.

[0072] If the projection image PG is not rectangular, the area setting unit 21 sets the area where the projection image PG is projected as a rectangle as the image display area DA. The aspect ratio of the image display area DA is the same as or approximately the same as the aspect ratio of the projection image PG. The area setting unit 21 sets the area of ​​the projection area PA other than the image display area DA as the non-image area EA.

[0073] After setting the image display area DA, the projector 10 determines whether or not the selection is automatic in step S113. The area setting unit 21 reads out the setting data SE stored in the memory 40. The area setting unit 21 determines whether the setting value included in the setting data SE is automatic or manual. If the area setting unit 21 determines that the selection is automatic based on the setting data SE, the process proceeds to step S115 (step S113: YES). If the setting value is manual, the area setting unit 21 determines that the selection is not automatic. The area setting unit 21 proceeds to step S116 (step S113: NO).

[0074] If the projector 10 determines that the selection is automatic, then in step S115, it sets a sub-image display area SA. The area setting unit 21 acquires the shape and size of the non-image area EA. The area setting unit 21 sets a sub-image display area SA within the non-image area EA based on the shape and size of the non-image area EA. The area setting unit 21 sets one or more sub-image display areas SA.

[0075] After setting the sub-image display area SA, the projector 10 acquires sub-image data in step S117. The area setting unit 21 acquires the sub-image data by reading out the display data DG stored in the memory 40 as sub-image data. The area setting unit 21 reads out from the memory 40 the display data DG for projecting a sub-image SG corresponding to the shape and size of the sub-image display area SA. As an example, the area setting unit 21 reads out from the memory 40 the display data DG for projecting a display image with the same aspect ratio as the aspect ratio of the sub-image display area SA as sub-image data. After setting multiple sub-image display areas SA, the area setting unit 21 reads out the display data DG for projecting a sub-image SG into each sub-image display area SA as sub-image data. After acquiring the sub-image data, the projector 10 proceeds to step S119.

[0076] If the projector 10 determines that the selection is not automatic, then in step S116, it acquires sub-image data. The area setting unit 21 reads out the display data DG corresponding to the first selected image included in the setting data SE from the memory 40 as sub-image data. The area setting unit 21 acquires the sub-image data by reading out the display data DG stored in the memory 40. When the setting data SE includes the second selected image and the third selected image, the area setting unit 21 reads out the display data DG corresponding to the second selected image as sub-image data and the display data DG corresponding to the third selected image as sub-image data.

[0077] After acquiring the sub-image data, the projector 10 sets a sub-image display area SA in step S118. The area setting unit 21 acquires the sub-image aspect ratio of the sub-image SG to be projected based on the sub-image data. The area setting unit 21 may acquire the size of the sub-image SG to be projected based on the sub-image data. The area setting unit 21 sets the sub-image display area SA based on the sub-image aspect ratio. The area setting unit 21 detects an area within the non-image area EA that corresponds to the sub-image aspect ratio. The area setting unit 21 sets the area within the non-image area EA that corresponds to the sub-image aspect ratio as the sub-image display area SA.

[0078] When the area setting unit 21 acquires the sub-image data corresponding to the second selected image, it acquires the sub-image aspect ratio of the sub-image SG to be projected based on the sub-image data corresponding to the second selected image. The area setting unit 21 sets the sub-image display area SA based on the sub-image aspect ratio.

[0079] When the area setting unit 21 cannot set the sub-image display area SA corresponding to the first selected image, it may set the sub-image display area SA corresponding to the second selected image. The area setting unit 21 may set the sub-image display area SA corresponding to the first selected image and the sub-image display area SA corresponding to the second selected image. After setting the sub-image display area SA, the projector 10 proceeds to step S119.

[0080] In step S119, the projector 10 projects the projection image PG and the sub-image SG onto the projection surface SC. The image processing unit 23 corrects the projection image data based on the image display area DA. The image processing unit 23 corrects the size, resolution, etc. of the projection image data to match the size of the image display area DA. When the area setting unit 21 performs keystone correction or other correction on the projection image PG to set the image display area DA, the projection image data is corrected during the keystone correction or other correction. After the image processing unit 23 corrects the projection image data, the image projection device 30 projects the projection image PG onto the image display area DA. The projector 10 projects the sub-image SG onto the sub-image display area SA within the non-image area EA. By projecting the sub-image SG onto the sub-image display area SA within the non-image area EA, the projector 10 can make effective use of the non-image area EA.

[0081] The control flow of the projector 10 includes setting an image display area DA onto which a projection image PG based on projection image data can be projected, correcting the projection image data based on the image display area DA, setting a sub-image display area SA different from the image display area DA, projecting the projection image PG onto the image display area DA, and projecting a sub-image SG based on the sub-image data onto the sub-image display area SA. By projecting the sub-image SG onto the sub-image display area SA within the non-image area EA, the non-image area EA corresponding to the outside of the projectable area is effectively utilized.

[0082] The control flow of the projector 10 preferably includes obtaining the sub-image aspect ratio and setting the sub-image display area SA based on the sub-image aspect ratio. The projector 10 can project a sub-image SG desired by the user.

[0083] The control flow of the projector 10 includes pre-storing a plurality of display data DG to be stored in the memory 40 and selected as sub-image data, acquiring the sub-image aspect ratio of the sub-image SG to be projected based on the sub-image data selected from the plurality of display data DG based on the user's input operation, and setting the sub-image display area SA based on the acquired sub-image aspect ratio. The projector 10 can select and project a sub-image SG in a manner desired by the user.

[0084] The projector 10 includes a control unit 20 and an image projection device 30. The control unit 20 sets an image display area DA onto which a projection image PG based on projection image data can be projected, corrects the projection image data based on the image display area DA, and sets a sub-image display area SA different from the image display area DA. The image projection device 30 projects the projection image PG onto the image display area DA, and projects a sub-image SG based on the sub-image data onto the sub-image display area SA. By projecting the sub-image SG onto the sub-image display area SA within the non-image area EA, the non-image area EA corresponding to the outside of the projectable area is effectively utilized.

[0085] Fig. 6 shows an example of a projection image PG projected onto a projection surface SC. Fig. 6 shows the projection surface SC onto which the projection image PG is projected. The projection surface SC is made up of a wall of a room. Fig. 6 shows the projection state before the projection image data is corrected. The projection image PG is projected over the entire projection area PA. The imaging unit 15 captures an image of the projection surface SC onto which the projection image PG is projected.

[0086] 6 shows a state in which an obstacle SM is placed in front of a wall. The obstacle SM is placed in a position where it overlaps with part of the projected image PG. Due to the obstacle SM, part of the projected image PG is projected in a state in which it is difficult for a user of the projector 10 to see.

[0087] Fig. 7 shows an example of a projection image PG projected onto a projection surface SC. Fig. 7 shows the projection surface SC onto which the projection image PG is projected. Fig. 7 also shows a schematic diagram of an image display area DA and a non-image area EA.

[0088] FIG. 7 shows the state after correction processing for avoiding the obstacle SM has been performed on the projection image data. The area setting unit 21 of the projector 10 performs correction processing for avoiding the obstacle SM on the projection image data. The area setting unit 21 performs correction processing based on the captured image data. The correction processing includes size correction, resolution correction, etc. By performing correction processing on the projection image data, an image display area DA is set within the projection area PA. The image display area DA is an area onto which the projection image PG is projected while avoiding the obstacle SM. The shape of the image display area DA corresponds to the aspect ratio of the projection image PG. FIG. 7 shows an example of the image display area DA. The position of the image display area DA is not limited to the position shown in FIG. 7. The position of the image display area DA within the projection area PA can be set as appropriate as long as it is an area where the obstacle SM can be avoided. The projection image PG is projected into the image display area DA.

[0089] When the image display area DA is set, a non-image area EA is generated within the projection area PA, where the projection image PG is not projected. Within the non-image area EA, there are areas that overlap with the obstacle SM and areas that do not overlap with the obstacle SM. In the areas that do not overlap with the obstacle SM, an image can be projected.

[0090] Fig. 8 shows an example of a projection image PG projected onto a projection surface SC. Fig. 8 shows the projection surface SC onto which the projection image PG is projected. Fig. 8 also shows an image display area DA, a non-image area EA, and a sub-image display area SA. The image display area DA and non-image area EA shown in Fig. 8 are the same as the image display area DA and non-image area EA shown in Fig. 7, respectively.

[0091] FIG. 8 shows a first sub-image display area SA1, which is an example of the sub-image display area SA. The first sub-image display area SA1 is set based on imaging data. The first sub-image display area SA1 is an area different from the image display area DA and is set within the non-image area EA. The first sub-image display area SA1 is set in an area within the non-image area EA that does not overlap with an obstacle SM. The first sub-image display area SA1 is set to avoid the obstacle SM.

[0092] The first sub-image display area SA1 is set, for example, according to the sub-image aspect ratio of the sub-image SG projected based on the sub-image data. The first sub-image display area SA1 may be set according to the shape and size of the non-image area EA. A first sub-image SG1, which is an example of the sub-image SG, is projected into the first sub-image display area SA1.

[0093] The sub-image aspect ratio of the first sub-image SG1 is the same as or approximately the same as the aspect ratio of the first sub-image display area SA1. The first sub-image SG1 shown in Figure 8 is an analog clock image. The analog clock image is an example of a sub-image SG. The non-image area EA is used to display the analog clock.

[0094] The control flow of the projector 10 includes acquiring imaging data of the projection surface SC, and setting an image display area DA that avoids the obstacle SM based on the imaging data. The projector 10 can project the projection image PG while avoiding the obstacle SM.

[0095] The control flow of the projector 10 includes setting a first sub-image display area SA1 that avoids the obstacle SM based on the captured image data. The first sub-image SG1 is projected at a position that does not overlap with the obstacle SM, and the user of the projector 10 can view the first sub-image SG1 without being obstructed by the obstacle SM.

[0096] Fig. 9 shows an example of a projection image PG projected onto a projection surface SC. Fig. 9 shows the projection surface SC onto which the projection image PG is projected. Fig. 9 also shows an image display area DA, a non-image area EA, and a second sub-image display area SA2. The image display area DA and non-image area EA shown in Fig. 9 are the same as the image display area DA and non-image area EA shown in Fig. 7, respectively.

[0097] The second sub-image display area SA2 is an example of a sub-image display area SA. The aspect ratio and size of the second sub-image display area SA2 differ from the aspect ratio and size of the first sub-image display area SA1 shown in FIG. 8. The second sub-image display area SA2 is set according to the shape and size of the non-image area EA. Alternatively, the second sub-image display area SA2 is set based on the aspect ratio of a selected image selected in advance by the user. A second sub-image SG2, an example of a sub-image SG, is projected into the second sub-image display area SA2.

[0098] The sub-image aspect ratio of the second sub-image SG2 is the same as or approximately the same as the aspect ratio of the second sub-image display area SA2. The second sub-image SG2 shown in Figure 9 is a digital clock image. The digital clock image is an example of a sub-image SG. The non-image area EA is used to display the digital clock.

[0099] The second sub-image SG2 shown in Fig. 9 has a different shape and size from the first sub-image SG1 shown in Fig. 8. The shape includes the sub-image aspect ratio. The position where the second sub-image SG2 is projected is different from the position where the first sub-image SG1 is projected. The positions where the first sub-image SG1 and the second sub-image SG2 are projected are set appropriately.

[0100] Fig. 10 shows an example of a projection image PG projected onto a projection surface SC. Fig. 10 shows the projection surface SC onto which the projection image PG is projected. Fig. 10 also shows an image display area DA, a non-image area EA, and two sub-image display areas SA. The image display area DA and non-image area EA shown in Fig. 10 are the same as the image display area DA and non-image area EA shown in Fig. 7, respectively.

[0101] Fig. 10 shows two sub-image display areas SA. The two sub-image display areas SA are a second sub-image display area SA2 and a third sub-image display area SA3. The second sub-image display area SA2 shown in Fig. 10 is the same as the second sub-image display area SA2 shown in Fig. 9. The second sub-image display area SA2 corresponds to an example of a second projectable area.

[0102] The second sub-image SG2 is projected in the second sub-image display area SA2. The second sub-image SG2 shown in Fig. 10 is the same as the second sub-image SG2 shown in Fig. 9. The second sub-image SG2 is a digital clock image.

[0103] The third sub-image display area SA3 is an example of a sub-image display area SA. The third sub-image display area SA3 is an area different from the second sub-image display area SA2. The aspect ratio and size of the third sub-image display area SA3 are different from the aspect ratio and size of the second sub-image display area SA2. The third sub-image display area SA3 is set according to the shape and size of the non-image area EA. Alternatively, the third sub-image display area SA3 is set based on the aspect ratio of a selected image selected in advance by the user. The third sub-image display area SA3 corresponds to an example of a third projectable area.

[0104] A third sub-image SG3 is projected in the third sub-image display area SA3. The third sub-image SG3 is an example of a sub-image SG. The third sub-image SG3 corresponds to an example of a third image. The third sub-image SG3 is projected based on third sub-image data that causes the third sub-image SG3 to be projected. The third sub-image data corresponds to an example of third image data. The sub-image aspect ratio of the third sub-image SG3 is the same as or approximately the same as the aspect ratio of the third sub-image display area SA3. The third sub-image SG3 shown in FIG. 10 is a news display image. The news display image is an example of a sub-image SG. As an example, the news display image displays news information transmitted from the control device 100. The non-image area EA is used to display the news information.

[0105] The control flow of the projector 10 includes setting a third sub-image display area SA3 different from the image display area DA and the second sub-image display area SA2, and projecting a third sub-image SG3 based on the third sub-image data into the third sub-image display area SA3. The projector 10 can project a plurality of sub-images SG onto the non-image area EA, thereby making more effective use of the non-image area EA.

[0106] Fig. 11 shows an example of a projection image PG projected onto a projection surface SC. Fig. 11 shows the projection surface SC onto which the projection image PG is projected. The projection surface SC is made up of a screen. Fig. 11 shows the projection state of the projection image PG before the projection image data is corrected. The projection image PG is projected over the entire projection area PA. The imaging unit 15 captures an image of the projection surface SC onto which the projection image PG is projected.

[0107] Fig. 12 shows an example of a projection image PG projected onto a projection surface SC. Fig. 12 shows the projection surface SC onto which the projection image PG is projected. Fig. 12 schematically shows an image display area DA and a non-image area EA.

[0108] FIG. 12 shows the state after geometric correction processing such as keystone correction has been performed on the projection image data. The area setting unit 21 of the projector 10 performs geometric correction processing on the projection image data. The area setting unit 21 performs geometric correction processing on the projection image data. The area setting unit 21 performs geometric correction processing based on the captured image data. The correction processing includes shape correction, resolution correction, and the like. By performing geometric correction processing on the projection image data, an image display area DA is set within the projection area PA. The image display area DA is an area onto which a rectangular projection image PG is projected. The shape of the image display area DA corresponds to the aspect ratio of the projection image PG. FIG. 12 shows an example of the image display area DA. The position of the image display area DA is not limited to the position shown in FIG. 12. The position of the image display area DA within the projection area PA can be set as appropriate as long as it is an area onto which a rectangular projection image PG can be projected. The projection image PG is projected into the image display area DA.

[0109] When the image display area DA is set, a non-image area EA where the projection image PG is not projected is generated within the projection area PA. The non-image area EA is an area where the projection image PG is not projected.

[0110] Fig. 13 shows an example of a projection image PG projected onto a projection surface SC. Fig. 13 shows the projection surface SC onto which the projection image PG is projected. Fig. 13 also shows an image display area DA, a non-image area EA, and a sub-image display area SA. The image display area DA and non-image area EA shown in Fig. 13 are the same as the image display area DA and non-image area EA shown in Fig. 12, respectively.

[0111] 13 shows a third sub-image display area SA3, which is an example of the sub-image display area SA. The third sub-image display area SA3 is set based on imaging data. The third sub-image display area SA3 is a different area from the image display area DA and is set within the non-image area EA. The third sub-image display area SA3 shown in FIG. 13 is the same as the third sub-image display area SA3 shown in FIG. 10.

[0112] The third sub-image display area SA3 is set, for example, to correspond to the sub-image aspect ratio of the sub-image SG projected based on the sub-image data. The third sub-image display area SA3 may be set according to the shape and size of the non-image area EA. A third sub-image SG3, which is an example of the sub-image SG, is projected into the third sub-image display area SA3. The third sub-image SG3 shown in FIG. 13 is the same as the third sub-image SG3 shown in FIG. 10.

[0113] The sub-image aspect ratio of the third sub-image SG3 is the same as or approximately the same as the aspect ratio of the third sub-image display area SA3. The third sub-image SG3 shown in Fig. 13 is a news display image. The non-image area EA is used to display the news.

[0114] The first sub-image SG1 and second sub-image SG2 shown in Figures 8, 9, etc. are projected based on display data DG stored in memory 40. The projector 10 projects the first sub-image SG1 and the second sub-image SG2 using the display data DG stored in memory 40 as sub-image data. The sub-image data used to project the sub-image SG is not limited to the display data DG. The sub-image data may be setting image data GD that is transmitted from the control device 100 and is not stored in memory 40.

[0115] 1 may include a management server (not shown). The management server is connected to the projector 10 via a network for communication. The management server transmits sub-image data to the projector 10 for projecting a sub-image SG. The projector 10 displays the sub-image SG in the sub-image display area SA based on the sub-image data transmitted from the management server.

[0116] The second sub-image SG2 and the third sub-image SG3 shown in FIG. 10 are each projected based on display data DG stored in memory 40. The projector 10 projects the second sub-image SG2 and the third sub-image SG3 using the display data DG stored in memory 40 as sub-image data. The sub-image data used to project the sub-images SG is not limited to display data DG. The second sub-image data used to project the second sub-image SG2 may be display data DG stored in memory 40, and the third sub-image data used to project the third sub-image SG3 may be setting image data GD transmitted from the control device 100 and not stored in memory 40. The second sub-image data used to project the second sub-image SG2 may be setting image data GD transmitted from the control device 100 and not stored in memory 40, and the third sub-image data used to project the third sub-image SG3 may be display data DG stored in memory 40.

[0117] The second sub-image SG2 and the third sub-image SG3 shown in Fig. 10 are different images, but are not limited to this. The second sub-image SG2 and the third sub-image SG3 may be the same image. Preferably, the second sub-image SG2 and the third sub-image SG3 are different images. By projecting the second sub-image SG2 and the third sub-image SG3 as different images, various information can be provided to the user.

[0118] 10 shows two sub-images SG, the second sub-image SG2 and the third sub-image SG3, but this is not limiting. The projector 10 may project three or more sub-images SG. The number of projected sub-images SG is adjusted depending on the shape and size of the non-image area EA.

[0119] The projector 10 may be an interactive projector having an interactive function that reflects position information detected on the projection surface SC in the projected image PG. When the projector 10 is an interactive projector, the projector 10 projects an interactive pen menu or the like as the sub-image SG.

[0120] 4 is displayed on a display device connected to the input / output unit 120 of the control device 100, but is not limited to this. The projector 10 may project the sub-image setting screen 300 or a setting screen having the same functions as the sub-image setting screen 300 onto the projection surface SC. The user performs settings related to the sub-image SG using the operation panel 17 of the projector 10 or a remote control (not shown).

[0121] The following is a summary of this disclosure.

[0122] Appendix 1 The control method for a projection device disclosed herein includes setting a first projectable area into which a first image based on first image data can be projected, correcting the first image data based on the first projectable area, setting a second projectable area different from the first projectable area, projecting the first image into the first projectable area, and projecting a second image based on second image data into the second projectable area. The second projectable area is set in an area different from the first projectable area, and the second image is projected into the second projectable area, thereby making effective use of the area different from the first projectable area.

[0123] Appendix 2 A control method for a projection device as described in Appendix 1, comprising: acquiring an aspect ratio of the second image; and setting the second projectable area based on the aspect ratio of the second image. The projection device can project a second image desired by the user.

[0124] Appendix 3 A control method for a projection device as described in Appendix 1 or 2, comprising: pre-storing a plurality of OSD image data to be selected as the second image data; acquiring the aspect ratio of the second image to be projected based on the second image data selected from the plurality of OSD image data based on a user's input operation; and setting the second projectable area based on the aspect ratio of the acquired second image. The projection device can select and project the second image in a manner desired by the user.

[0125] Appendix 4 A control method for a projection device described in any one of Supplementary Notes 1 to 3, comprising: acquiring imaging information of an image of a projection surface; and setting the first projectable area that avoids obstacles based on the imaging information. The projection device can project the first image while avoiding the obstacle.

[0126] Appendix 5 The projection device control method according to Supplementary Note 4 includes setting the second projectable area that avoids the obstacle based on the imaging information. The second image projected into the second projectable area is projected at a position that does not overlap with any obstacles, allowing the user of the projection device to view the second image without being obstructed by any obstacles.

[0127] Appendix 6 A method for controlling a projection device described in any one of Appendices 1 to 5, comprising: setting a third projectable area different from the first projectable area and the second projectable area; and projecting a third image based on third image data into the third projectable area. The projection device can project a plurality of images, such as a second image and a third image, into an area different from the first projectable area, thereby making more effective use of the area different from the first projectable area.

[0128] Appendix 7 The projection device of the present disclosure includes a control unit and a projection unit, wherein the control unit sets a first projectable area into which a first image based on first image data can be projected, corrects the first image data based on the first projectable area, and sets a second projectable area different from the first projectable area, and the projection unit projects the first image into the first projectable area and projects a second image based on second image data into the second projectable area. The second projectable area is set in an area different from the first projectable area, and the second image is projected into the second projectable area, thereby making effective use of the area different from the first projectable area. [Explanation of symbols]

[0129] 1...projection system, 10...projector, 11...communication interface, 15...imaging unit, 17...operation panel, 20...control unit, 21...area setting unit, 23...image processing unit, 25...projection control unit, 30...image projection device, 31...light source, 31a...light source unit, 31b...reflector, 33...liquid crystal light valve, 33a...pixel area, 33B...liquid crystal light valve for blue light, 33G...liquid crystal light valve for green light, 33R...liquid crystal light valve for red light, 35...light valve driving unit, 37...projection lens, 40...memory, 100...control device, 110...device communication interface, 120...input / output unit, 130...device control unit, 131...display control unit, 133...setting control unit, 140...device memory, 200...image providing device position, 300...sub-image setting screen, 301...manual selection button, 303...first selected image display field, 304a...selected image name, 304b...selected image aspect ratio, 305...second selected image display field, 306...image selection field, 311...automatic selection button, 321...complete button, CP...control program, DA...image display area, DG...display data, EA...non-image area, GD...setting image data, PA...projection area, PG...projected image, PL...pixel, SA...sub-image display area, SA1...first sub-image display area, SA2...second sub-image display area, SA3...third sub-image display area, SC...projection surface, SE...setting data, SG...sub-image, SG1...first sub-image, SG2...second sub-image, SG3...third sub-image, SM...obstacle, SP...setting program.

Claims

1. setting a first projectable area in which a first image based on first image data can be projected; correcting the first image data based on the first projectable area; setting a second projectable area different from the first projectable area; projecting the first image onto the first projectable area; projecting a second image based on second image data onto the second projectable area; A method for controlling a projection device, comprising:

2. obtaining an aspect ratio of the second image; setting the second projectable area based on the aspect ratio of the second image; 2. The method for controlling a projection device according to claim 1, comprising:

3. storing in advance a plurality of OSD image data to be selected as the second image data; acquiring an aspect ratio of the second image to be projected based on the second image data selected based on a user's input operation from among the plurality of OSD image data; setting the second projectable area based on the aspect ratio of the acquired second image; 2. The method for controlling a projection device according to claim 1, comprising:

4. Acquiring imaging information of an image of the projection surface; setting the first projectable area that avoids obstacles based on the imaging information; 2. The method for controlling a projection device according to claim 1, comprising:

5. setting the second projectable area that avoids the obstacle based on the imaging information; 5. The method for controlling a projection device according to claim 4, comprising:

6. setting a third projectable area different from the first projectable area and the second projectable area; projecting a third image based on third image data onto the third projectable area; 2. The method for controlling a projection device according to claim 1, comprising:

7. A control unit; a projection unit, The control unit setting a first projectable area in which a first image based on first image data can be projected; correcting the first image data based on the first projectable area; setting a second projectable area different from the first projectable area; Run The projection unit is projecting the first image onto the first projectable area; projecting a second image based on second image data onto the second projectable area; A projection device that performs the above.

Images