Display control method, display device, and display control program product

Abstract

The invention provides a display control method, a display device and a display control program product, which enable a user to learn a technology related to a use method of a projector. A display control method includes causing a projector (1) to display a first image (P1), which is an image obtained by capturing a first projection image (PM1) corresponding to first content (C1) projected by a first projector (PJ1) onto a projection surface (PS), and a second image (P2), which is a plurality of thumbnail images (PTN) (N = 1-M) each representing a plurality of pieces of content (CN) (N = 1-M) corresponding to a projection image (PM) that can be projected by a second projector (PJ2).

Description

Technical Field

[0001] The present invention relates to a display control method, a display device, and a display control program product. Background Art

[0002] For example, in Patent Document 1, there is disclosed an electronic device that reproduces a highlight image of a moving image included in a content list based on information related to the content list provided by a server and provides a preview of the moving image.

[0003] Patent Document 1: Japanese Patent Application Laid-Open No. 2018-85754

[0004] In the technology described in Patent Document 1, since only a preview of a moving image is displayed, it is difficult for a user to grasp the usage method of the content using a projector and it is difficult to imagine. Summary of the Invention

[0005] One aspect of the present disclosure is a display control method, which includes: causing a display device to display a first image and a second image, the first image representing a state in which a first projector projects a first projection image corresponding to a first content onto a projection surface, and the second image being a plurality of thumbnail images respectively representing a plurality of contents corresponding to projection images that can be projected by a second projector.

[0006] Another aspect of the present disclosure is a display device that displays a first image and a second image, the first image representing a state in which a first projector projects a first projection image corresponding to a first content onto a projection surface, and the second image being a plurality of thumbnail images respectively representing a plurality of contents corresponding to projection images that can be projected by a second projector.

[0007] Still another aspect of the present disclosure is a display control program product that causes a computer controlling a display device to execute the following processing: causing the display device to display a first image and a second image, the first image representing a state in which a first projector projects a first projection image corresponding to a first content onto a projection surface, and the second image being a plurality of thumbnail images respectively representing a plurality of contents corresponding to projection images that can be projected by a second projector. Brief Description of the Drawings

[0008] Figure 1 is a diagram showing an example of the structure of the projector according to the present embodiment.

[0009] Figure 2 is a diagram showing an example of the structure of the first control unit of the projector.

[0010] Figure 3 is a diagram showing a first projection image including a first image, a second image, and a third image.

[0011] Figure 4This is a diagram showing a second projection image including a first image, a second image, and a third image.

[0012] Figure 5 This is a diagram showing a third projection image including a first image, a second image, and a third image.

[0013] Figure 6 This is a diagram showing a fourth projection image including a first image, a second image, and a third image.

[0014] Figure 7 This is a diagram showing a fifth projection image including a first image, a second image, and a third image.

[0015] Figure 8 This is a flowchart showing an example of the processing of the first control unit.

[0016] Reference Signs Explanation

[0017] 1: Projector (display device, second projector); 150: First control unit; 150A: First processor (computer); 150B: First memory; 151: Acquisition unit; 152: Image generation unit; 153: Projection control unit; 154: Reception unit; 155: First communication control unit; 156: Image storage unit; C1: First content; C2: Second content; C3: Third content; CN: Nth content; JC: Icon (object); P1: First image; P2: Second image; P3: Third image; PG1: First control program (display control program); PJ: Projector; PJ1: First projector; PJ2: Second projector; PM: Projection image; PM1: First projection image; PM2: Second projection image; PM3: Third projection image; PS: Projection surface; PT: Thumbnail image; PT1: First thumbnail image; PT2: Second thumbnail image; PTN: Nth thumbnail image; SC: Screen; U1: First generated image; UN: Nth generated image; V1: First moving image; VN: Nth moving image. Detailed Description of the Embodiment

[0018] Hereinafter, this embodiment will be described with reference to the accompanying drawings.

[0019] First, refer to Figure 1 to describe the structure of the projector 1 of this embodiment. Figure 1 This is a diagram showing an example of the structure of the projector 1 of this embodiment.

[0020] As Figure 1As shown, the projector 1 has a projection unit 110 and a drive unit 120 that drives the projection unit 110. The projection unit 110 forms an optical image and projects image light PL onto the screen SC. In addition, in the present embodiment, the projection unit 110 projects the image light PL corresponding to the projected image PM onto the screen SC.

[0021] The projection unit 110 includes a light source unit 111, a light modulation device 112, and a projection optical system 113. The drive unit 120 includes a light source drive unit 121 and a light modulation device drive unit 122.

[0022] The projector 1 corresponds to an example of a "display device".

[0023] In addition, the projector 1 corresponds to an example of a "second projector".

[0024] In addition, the second projector PJ2 can be the same projector as the "first projector" or a different projector from the "first projector".

[0025] In the present embodiment, a case where the second projector PJ2 is a projector PJ different from the first projector PJ1 will be described. The first projector PJ1 is, for example, a projector PJ owned by the management company of the management server device 3. In addition, the second projector PJ2 is the projector 1 owned by the user.

[0026] The light source unit 111 includes a light source 111A. The light source 111A is, for example, a solid light source such as an LED (Light Emitting Diode) or a laser light source.

[0027] In the present embodiment, a case where the light source 111A of the light source unit 111 is a solid light source will be described, but it is not limited thereto. The light source 111A of the light source unit 111 can also be a light source such as a halogen lamp, a xenon lamp, or an ultra-high pressure mercury lamp.

[0028] Furthermore, the light source unit 111 can also have a reflector and an auxiliary reflector that guide the light emitted by the light source 111A to the light modulation device 112. The light source unit 111 can also have a lens group, a polarizing plate for improving the optical characteristics of the projection light, or a dimming element that reduces the light amount of the light emitted by the light source on the path to the light modulation device 112.

[0029] The light source drive unit 121 is connected to the internal bus 107 and turns on and off the light source 111A of the light source unit 111 and controls the output of the light source according to the instructions of the first control unit 150 that is also connected to the internal bus 107.

[0030] The light modulation device 112 has, for example, three liquid crystal panels 115 corresponding to the three primary colors of R, G, and B. R represents red, G represents green, and B represents blue. That is, the light modulation device 112 has a liquid crystal panel 115 corresponding to R-colored light, a liquid crystal panel 115 corresponding to G-colored light, and a liquid crystal panel 115 corresponding to B-colored light.

[0031] The light emitted from the light source unit 111 is separated into color lights of RGB three colors and is incident on the corresponding liquid crystal panels 115 respectively. The three liquid crystal panels 115 are transmissive liquid crystal panels respectively, and modulate the transmitted light to generate the first image light. The first image light modulated by each liquid crystal panel 115 is synthesized by a synthesis optical system such as a cross dichroic prism and is emitted to the projection optical system 113.

[0032] In the present embodiment, the case where the light modulation device 112 has a transmissive liquid crystal panel 115 as a light modulation element is described, but it is not limited thereto. The light modulation element may be a reflective liquid crystal panel or a digital micromirror device.

[0033] The light modulation device 112 is driven by the light modulation device drive unit 122. The light modulation device drive unit 122 is connected to the image processing unit 145.

[0034] Image data corresponding to each of the primary colors of R, G, and B is input from the image processing unit 145 to the light modulation device drive unit 122. The light modulation device drive unit 122 converts the input image data into a data signal suitable for the operation of the liquid crystal panel 115. The light modulation device drive unit 122 applies a voltage to each pixel of each liquid crystal panel 115 according to the converted data signal, and depicts an image on each liquid crystal panel 115.

[0035] The projection optical system 113 has a projection lens, a mirror, etc. that image the incident image light PL on the screen SC. In addition, the projection optical system 113 has a zoom mechanism that enlarges or reduces the image projected onto the screen SC, a focus adjustment mechanism for performing focus adjustment, and a lens shift mechanism for adjusting the projection direction of the image light PL, etc.

[0036] The projector 1 further has an operation unit 131, a remote control light receiving unit 133, an input interface 135, a storage unit 137, a first communication interface 141, a frame memory 143, an image processing unit 145, and a first control unit 150. The input interface 135, the storage unit 137, the first communication interface 141, the image processing unit 145, and the first control unit 150 are connected via an internal bus 107 so as to be able to communicate with each other.

[0037] The operation unit 131 has various buttons and switches provided on the surface of the housing of the projector 1, generates operation signals corresponding to the operations of these buttons and switches, and outputs them to the input interface 135. The input interface 135 has a circuit that outputs the operation signals input from the operation unit 131 to the first control unit 150.

[0038] The remote control light receiving unit 133 receives the infrared signal transmitted from the remote control 2, decodes the received infrared signal to generate an operation signal. The remote control light receiving unit 133 outputs the generated operation signal to the input interface 135. The input interface 135 has a circuit that outputs the operation signals input from the remote control light receiving unit 133 to the first control unit 150.

[0039] The storage unit 137 is, for example, a magnetic recording device such as an HDD (Hard Disk Drive), or a storage device using semiconductor storage elements such as flash memory and SSD (Solid State Drive). The storage unit 137 stores programs executed by the first control unit 150, data processed by the first control unit 150, and image data, etc. The storage unit 137 is an example of a non-transitory and computer-readable storage medium. The storage medium may also be a medium such as a CD-ROM (Compact Disc-Read Only Memory) that is separated from the projector 1 and distributed to users.

[0040] The first communication interface 141 is a communication interface that communicates with the server device 3 according to, for example, the Ethernet (registered trademark) standard. The first communication interface 141 includes a connector for connecting an Ethernet (registered trademark) cable and an interface circuit for processing the signals transmitted in the connector. The first communication interface 141 is an interface board having a connector and an interface circuit, and is connected to the main board on which the first control unit 150 such as the first processor 150A is installed. Alternatively, the connector and the interface circuit constituting the first communication interface 141 are installed on the main board of the first control unit 150. The first communication interface 141 receives image data, etc. from the server device 3.

[0041] The first control unit 150 includes a first memory 150B and a first processor 150A. The first memory 150B is a storage device that stores programs and data executed by the first processor 150A in a non-volatile manner. The first memory 150B is composed of a magnetic storage device, a semiconductor storage element such as a flash ROM (Read Only Memory), or other types of non-volatile storage devices. In addition, the first memory 150B may also include a RAM (Random Access Memory) that constitutes the working area of the first processor 150A. The first memory 150B stores data processed by the first control unit 150, the first control program PG1 executed by the first processor 150A, and the like.

[0042] The first control unit 150 controls the operations of each part of the projector 1.

[0043] The first processor 150A may be composed of a single processor or a structure in which multiple processors function as the first processor 150A. The first processor 150A executes the first control program PG1 to control each part of the projector 1. For example, the first processor 150A outputs an execution instruction for image processing corresponding to the operations received through the operation unit 131 and the remote controller 2 and parameters for the image processing. The parameters include, for example, geometric correction parameters for correcting the geometric distortion of the image projected onto the screen SC. In addition, the first processor 150A controls the light source drive unit 121 to control the lighting and extinguishing of the light source unit 111 and adjusts the output of the light source unit 111, that is, the light quantity. The first processor 150A is an example of a computer that controls the projector 1 as a display device. The computer may also be a personal computer connected to the projector 1 to control the projector 1.

[0044] The first processor 150A may also be composed of an SoC (System on Chip) integrated with a part or all of the first memory 150B and other circuits. In addition, the first processor 150A may be composed of a combination of a CPU (Central Processing Unit) that executes programs and a DSP (Digital Signal Processor) that executes specified arithmetic processing. It may be configured to install all functions of the first processor 150A in hardware or configured to use a programmable device.

[0045] The image processing unit 145 and the frame memory 143 can be constituted by an integrated circuit, for example. The integrated circuit includes LSI (Large-Scale Integration), ASIC (Application Specific Integrated Circuit), and PLD (Programmable Logic Device). The PLD includes, for example, FPGA (Field-Programmable Gate Array). Further, an analog circuit may be included in a part of the structure of the integrated circuit, or it may be a combination of a processor and an integrated circuit. The combination of a processor and an integrated circuit is called a microcontroller (MCU), SoC (System-on-a-chip), system LSI, chipset, etc.

[0046] The image processing unit 145 loads the image data input from the first communication interface 141 into the frame memory 143. The frame memory 143 has a plurality of memory banks. Each memory bank has a storage capacity capable of writing an amount of image data for one frame. The frame memory 143 is constituted by, for example, SDRAM (Synchronous Dynamic Random Access Memory).

[0047] The image processing unit 145 performs image processing such as resolution conversion processing, size adjustment processing, correction of distortion aberration, shape correction processing, digital zoom processing, adjustment of image hue or brightness, etc. on the image data loaded into the frame memory 143.

[0048] In addition, the image processing unit 145 generates a vertical synchronization signal that converts the input frame frequency of the vertical synchronization signal into a drawing frequency. The generated vertical synchronization signal is called an output synchronization signal. The image processing unit 145 outputs the generated output synchronization signal to the light modulation device driving unit 122.

[0049] Next, refer to Figure 2 The structure of the first control unit 150 of the projector 1 will be described. Figure 2 FIG. is an example showing the structure of the first control unit 150 of the projector 1.

[0050] As Figure 2 shown, the first control unit 150 has an acquisition unit 151, an image generation unit 152, a projection control unit 153, a reception unit 154, a first communication control unit 155, and an image storage unit 156. Each of these units is realized, for example, by the first processor 150A executing the first control program PG1 through the cooperation of software and hardware.

[0051] The first control program PG1 corresponds to an example of a "display control program".

[0052] The image storage unit 156 stores, for example, the first moving image V1 to the Mth moving image VM corresponding to the first content C1 to the Mth content CM, respectively. The integer M is, for example, "9".

[0053] The Nth moving image VN (N = 1 to M) is a moving image obtained by photographing, with a camera, the state in which the first projector PJ1 projects a projection image PM corresponding to the Nth content CN onto the projection surface PS. In addition, the Nth moving image VN (N = 1 to M) is a moving image including the projection image PM projected onto the projection surface PS and an image representing the first projector PJ1.

[0054] The Nth moving image VN (N = 1 to M) is acquired by the acquisition unit 151 from the server device 3 and stored by the acquisition unit 151 in the image storage unit 156. In addition, the Nth moving image VN is stored in advance in the server device 3.

[0055] In the following description, the case where the integer M is "9" will be described.

[0056] In addition, the image storage unit 156 stores the projection image PM projected by the projection control unit 153 onto the screen SC. The projection image PM includes the first image P1, the second image P2, and the third image P3.

[0057] The projection image PM is generated by the projection control unit 153 by synthesizing the first image P1, the second image P2, and the third image P3. In addition, the projection image PM is stored by the projection control unit 153 in the image storage unit 156.

[0058] In the initial state, the first image P1 is the first moving image V1 corresponding to the first content C1. That is, the first image P1 is the first moving image V1 representing the state in which the first projector PJ1 projects the first projection image PM1 corresponding to the first content C1 onto the projection surface PS. The first image P1 is, for example, the first moving image V1 obtained by photographing, with a camera, the state in which the first projector PJ1 projects the first projection image PM1 corresponding to the first content C1 onto the projection surface PS. The first image P1 can also be, for example, an animation that reproduces, by computer graphics or the like, the state in which the first projector PJ1 projects the projection image PM corresponding to the Nth content CN (N = 1 to 9) onto the projection surface PS.

[0059] The first projector PJ1 has the same structure as Figure 1 the projector 1 shown. The projection surface PS is, for example, the surface of a cylindrical column arranged indoors.

[0060] Regarding the projection surface PS, refer to Figures 3 - 7 for further description.

[0061] The second image P2 is a plurality of thumbnail images PT each representing a corresponding one of a plurality of contents that can be projected by the projector 1. The plurality of thumbnail images PT includes a first thumbnail image PT1 representing a first content C1.

[0062] The projector 1 corresponds to an example of the "second projector".

[0063] In the present embodiment, the plurality of thumbnail images PT are, for example, the first thumbnail image PT1 to the ninth thumbnail image PT9 each representing a corresponding one of the first content C1 to the ninth content C9. In other words, the Nth thumbnail image PTN represents the Nth content CN. The integer N is any one of "1" to "9". The size of each of the Nth thumbnail images PTN is smaller than the size of the first image P1. In addition, the content of each of the Nth thumbnail images PTN may be the same as or different from the content of the first projected image PM1.

[0064] The second image P2 is acquired by the acquisition unit 151 from the server device 3 and stored by the acquisition unit 151 in the image storage unit 156. In addition, the first thumbnail image PT1 to the ninth thumbnail image PT9 are pre-stored in the server device 3.

[0065] The third image P3 is an image representing a menu bar including an icon JC. When replacing the first image P1 and displaying an image obtained by performing a process of reducing visibility on the first image P1, the user operates the icon JC.

[0066] The icon JC corresponds to an example of an "object".

[0067] Refer to Figures 3 - 7 For a further description of the icon JC and the menu bar.

[0068] The acquisition unit 151 acquires the first moving image V1 to the ninth moving image V9 from the server device 3. In addition, the acquisition unit 151 causes the image storage unit 156 to store the first moving image V1 to the ninth moving image V9.

[0069] The acquisition unit 151 acquires the first thumbnail image PT1 to the ninth thumbnail image PT9 from the server device 3. In addition, the acquisition unit 151 causes the image storage unit 156 to store the first thumbnail image PT1 to the ninth thumbnail image PT9.

[0070] When the image generation unit 152 receives an operation of the user on the icon JC, it generates an image obtained by performing a process of reducing the visibility of the first image P1. The process of reducing visibility includes at least one of a blurring process, a mosaic process, and a brightness reduction process. In the present embodiment, the process of reducing visibility is, for example, a "blurring process".

[0071] When the first image P1 is the first moving image V1, when the image generation unit 152 receives a user operation on the icon JC, it generates a first generated image U1 obtained by performing a visibility reduction process on each frame image constituting the first moving image V1. Then, the image generation unit 152 causes the image storage unit 156 to store the generated first generated image U1. The icon JC functions as a graphical user interface for changing the display mode of the first image P1 or performing various settings.

[0072] When the first image P1 is the Nth moving image VN (N = 2 to 9), when the image generation unit 152 receives a user operation on the icon JC, it generates an Nth generated image UN obtained by performing a visibility reduction process on each frame image constituting the Nth moving image VN. Then, the image generation unit 152 stores the generated Nth generated image UN in the image storage unit 156.

[0073] In the present embodiment, the case where the image generation unit 152 generates the Nth generated image UN when receiving a user operation on the icon JC is described, but the embodiment is not limited thereto. In addition, the Nth generated image UN is a moving image obtained by performing a visibility reduction process on each frame image constituting the Nth moving image VN (N = 1 to 9) corresponding to the first image P1. For example, when the acquisition unit 151 acquires the Nth moving image VN (N = 1 to 9) from the server device 3, the image generation unit 152 may generate the Nth generated image UN.

[0074] The projection control unit 153 causes the projector 1 to project a projection image PM and causes the screen SC to display the projection image PM. The projection image PM includes a first image P1, a second image P2, and a third image P3. The first image P1 is the Nth moving image VN obtained by photographing with a camera the state in which the first projector PJ1 projects the projection image PM corresponding to the Nth content CN (N = 1 to 9) onto the projection surface PS. The first image P1 may also be an animation that reproduces with computer graphics or the like the state in which the first projector PJ1 projects the projection image PM corresponding to the Nth content CN (N = 1 to 9) onto the projection surface PS. The second image P2 is a plurality of thumbnail images PT each representing a plurality of contents corresponding to the projection image PM that the projector 1 can project. The third image P3 is an image representing a menu bar including the icon JC.

[0075] The projection control unit 153 synthesizes the first image P1, the second image P2, and the third image P3 to generate a projection image PM. The projection control unit 153 causes the projector 1 to project the generated projection image PM and causes the screen SC to display the projection image PM.

[0076] The projection control unit 153 synthesizes the first image P1 as a background image on the back of the second image P2 and the third image P3, for example, to generate a projection image PM. The projection control unit 153 causes the image storage unit 156 to store the generated projection image PM.

[0077] The second image P2 is arranged, for example, below the image corresponding to the projection surface PS in the first image P1 in the projection image PM. The third image P3 is arranged, for example, at the left end of the projection image PM.

[0078] Regarding the projection image PM, refer to Figures 3 - 7 for further description.

[0079] The reception unit 154 receives the user's operation on the icon JC when the visibility of the first image P1 included in the projection image PM is reduced.

[0080] When the reception unit 154 receives the user's operation on the icon JC, the image generation unit 152 generates an image obtained by performing a process of reducing the visibility on the first image P1. Then, the projection control unit 153 generates a projection image PM including the image generated by the image generation unit 152 as the first image P1, causes the projector 1 to project the generated projection image PM, and causes the screen SC to display the projection image PM.

[0081] In addition, the reception unit 154 receives the user's operation on any one of the plurality of thumbnail images PT constituting the second image P2 when changing the moving image corresponding to the first image P1 included in the projection image PM.

[0082] When the reception unit 154 receives the user's operation on any one of the plurality of thumbnail images PT constituting the second image P2, the projection control unit 153 changes the moving image corresponding to the first image P1 to the Nth moving image VN corresponding to the thumbnail image PT operated by the user.

[0083] For example, the case where the plurality of thumbnail images PT constituting the second image P2 includes the second thumbnail image PT2 will be described. When the first moving image V1 is displayed as the first image P1, when the reception unit 154 receives the user's operation on the second thumbnail image PT2 of the plurality of thumbnail images PT constituting the second image P2, the projection control unit 153 performs the following process. That is, the projection control unit 153 changes the moving image corresponding to the first image P1 included in the projection image PM from the first moving image V1 to the second moving image V2.

[0084] The projection control unit 153, for example, uses each frame image of the second moving image V2 as the first image P1, and composes the first image P1 as a background image behind the second image P2 and the third image P3 to generate a projection image PM. Then, the projection control unit 153 causes the projector 1 to project the generated projection image PM, and causes the screen SC to display the projection image PM.

[0085] The first communication control unit 155 receives the first moving image V1 to the ninth moving image V9 from the server device 3 via the first communication interface 141.

[0086] In addition, the first communication control unit 155 receives the first thumbnail image PT1 to the ninth thumbnail image PT9 from the server device 3 via the first communication interface 141.

[0087] Next, with reference to Figures 3 - 6 The projection image PM will be further described. The projection control unit 153 causes the projector 1 to project the projection image PM, which is displayed on the screen SC.

[0088] Figure 3 It is a diagram showing a first projection image 400 including the first image P1, the second image P2, and the third image P3. In the initial state, the projection control unit 153 causes the projector 1 to project the first projection image 400, which is displayed on the screen SC.

[0089] As Figure 3 shown, the first projection image 400 includes the first image 410, the second image 420, and the third image 430. In the first projection image 400, the first image 410 is displayed as a background image behind the second image 420 and the third image 430.

[0090] The first image 410 corresponds to an example of the first image P1.

[0091] The second image 420 corresponds to an example of the second image P2.

[0092] The third image 430 corresponds to an example of the third image P3.

[0093] The first image 410 includes a projection surface image 411, a projector image 412, and a mounting table image 413.

[0094] The projection surface image 411 is an image representing the projection surface PS. The projection surface PS is, for example, the surface of a cylindrical column arranged indoors. A first projection image PM1 corresponding to the first content C1 is displayed on the projection surface PS. The first projection image PM1 includes, for example, an image of a mountain and an image of the sun.

[0095] The projector image 412 represents the image of the first projector PJ1. In the first projection image 400, the first projector PJ1 projects the first projection image PM1 corresponding to the first content C1 onto the projection surface PS.

[0096] The mounting table image 413 represents the image of the mounting table on which the first projector PJ1 is mounted.

[0097] The second image 420 includes a thumbnail image 421, a thumbnail image 422, and a thumbnail image 423. In the first projection image 400, the projection control unit 153 arranges the second image 420 below the projection surface image 411 of the first image 410. The thumbnail image 421, the thumbnail image 422, and the thumbnail image 423 correspond to a plurality of thumbnail images PT.

[0098] The thumbnail image 421 is, for example, the second thumbnail image PT2. The second thumbnail image PT2 is a thumbnail image PT representing the second content C2.

[0099] The thumbnail image 422 is, for example, the third thumbnail image PT3. The third thumbnail image PT3 is a thumbnail image PT representing the third content C3.

[0100] The thumbnail image 423 is, for example, the fourth thumbnail image PT4. The fourth thumbnail image PT4 is a thumbnail image PT representing the fourth content C4.

[0101] The third image 430 includes a menu bar 431, an icon 432, an icon 433, and an icon 434. The projection control unit 153 arranges the third image 430 at the left end in the first projection image 400.

[0102] The menu bar 431 is displayed in a strip-shaped area extending in the vertical direction in the first projection image 400. The icon 432, the icon 433, and the icon 434 are displayed in the menu bar 431.

[0103] The icon 432 corresponds to the icon JC. That is, when replacing the first image 410 and displaying an image obtained by performing a process of reducing the visibility of the first image 410, the user operates the icon 432.

[0104] The icon 433 and the icon 434 respectively accept operations different from those of the icon 432.

[0105] Figure 4 FIG. shows a second projection image 500 including a first image P1, a second image P2, and a third image P3. When the user operates Figure 3 the thumbnail image 421 of the first projection image 400 shown, the projection control unit 153 displays the second projection image 500 on the screen SC.

[0106] AsFigure 4 As shown, the second projection image 500 includes a first image 510, a second image 520, and a third image 530. In the second projection image 500, the projection control unit 153 displays the first image 510 as a background image behind the second image 520 and the third image 530.

[0107] The first image 510 corresponds to an example of the first image P1.

[0108] The second image 520 corresponds to an example of the second image P2.

[0109] The third image 530 corresponds to an example of the third image P3.

[0110] The first image 510 includes a projection surface image 511, a projector image 512, and a mounting table image 513.

[0111] The projection surface image 511 is an image representing the projection surface PS. The projection surface PS is, for example, the surface of a cylindrical column arranged indoors. The second projection image PM2 corresponding to the second content C2 is displayed on the projection surface PS. The second projection image PM2 includes, for example, an image of a fish.

[0112] The projector image 512 is an image representing the first projector PJ1. In the second projection image 500, the first projector PJ1 projects the second projection image PM2 corresponding to the second content C2 onto the projection surface PS.

[0113] The mounting table image 513 is an image representing the mounting table on which the first projector PJ1 is placed.

[0114] The second image 520 includes a thumbnail image 521, a thumbnail image 522, and a thumbnail image 523. In the second projection image 500, the projection control unit 153 arranges the second image 520 below the projection surface image 511 of the first image 510. The thumbnail image 521, the thumbnail image 522, and the thumbnail image 523 correspond to a plurality of thumbnail images PT.

[0115] The thumbnail image 521 is, for example, the second thumbnail image PT2. The second thumbnail image PT2 is a thumbnail image PT representing the second content C2.

[0116] The thumbnail image 522 is, for example, the third thumbnail image PT3. The third thumbnail image PT3 is a thumbnail image PT representing the third content C3.

[0117] The thumbnail image 523 is, for example, the fourth thumbnail image PT4. The fourth thumbnail image PT4 is a thumbnail image PT representing the fourth content C4.

[0118] In the second projected image 500, the projection control unit 153 displays the thumbnail image 521 larger than the thumbnail images 522 and 523. By displaying in this way, the user can know that the second content C2 corresponding to the thumbnail image 521 is projected onto the projection surface PS.

[0119] The third image 530 includes a menu bar 531, icons 532, 533, and 534. The projection control unit 153 arranges the third image 530 at the left end in the second projected image 500.

[0120] The menu bar 531 is displayed in a strip-shaped area extending in the vertical direction in the second projected image 500. The icons 532, 533, and 534 are displayed in the menu bar 531.

[0121] The icon 532 corresponds to the icon JC. That is, when replacing the first image 510 and displaying an image obtained by performing a process of reducing the visibility of the first image 510, the user operates the icon 532.

[0122] The icons 533 and 534 respectively accept operations different from that of the icon 532.

[0123] Figure 5 FIG. is a diagram showing a third projected image 600 including a first image P1, a second image P2, and a third image P3. The third projected image 600 is displayed on the screen SC by the projection control unit 153 when the user operates the Figure 3 thumbnail image 422 of the first projected image 400 shown.

[0124] As Figure 5 shown, the third projected image 600 includes a first image 610, a second image 620, and a third image 630. In the third projected image 600, the projection control unit 153 displays the first image 610 as a background image behind the second image 620 and the third image 630.

[0125] The first image 610 corresponds to an example of the first image P1.

[0126] The second image 620 corresponds to an example of the second image P2.

[0127] The third image 630 corresponds to an example of the third image P3.

[0128] The first image 610 includes a projection surface image 611, a projector image 612, and a mounting table image 613.

[0129] The projection surface image 611 is an image representing the projection surface PS. The projection surface PS is, for example, the surface of a cylindrical column arranged indoors. The third projection image PM3 corresponding to the third content C3 is displayed on the projection surface PS. The third projection image PM3 includes, for example, an image of the moon and an image of stars.

[0130] The projector image 612 is an image representing the first projector PJ1. In the third projection image 600, the first projector PJ1 projects the third projection image PM3 corresponding to the third content C3 onto the projection surface PS.

[0131] The mounting table image 613 is an image representing the mounting table on which the first projector PJ1 is mounted.

[0132] The second image 620 includes a thumbnail image 621, a thumbnail image 622, and a thumbnail image 623. In the third projection image 600, the projection control unit 153 arranges the second image 620 below the projection surface image 611 of the first image 610. The thumbnail image 621, the thumbnail image 622, and the thumbnail image 623 correspond to a plurality of thumbnail images PT.

[0133] The thumbnail image 621 is, for example, the second thumbnail image PT2. The second thumbnail image PT2 is a thumbnail image PT representing the second content C2.

[0134] The thumbnail image 622 is, for example, the third thumbnail image PT3. The third thumbnail image PT3 is a thumbnail image PT representing the third content C3.

[0135] The thumbnail image 623 is, for example, the fourth thumbnail image PT4. The fourth thumbnail image PT4 is a thumbnail image PT representing the fourth content C4.

[0136] In the third projection image 600, the projection control unit 153 displays the thumbnail image 622 larger than the thumbnail image 621 and the thumbnail image 623. By displaying in this way, the user can know that the third content C3 corresponding to the thumbnail image 622 is projected onto the projection surface PS.

[0137] The third image 630 includes a menu bar 631, an icon 632, an icon 633, and an icon 634. The projection control unit 153 arranges the third image 630 at the left end in the third projection image 600.

[0138] The menu bar 631 is displayed in a strip-shaped area extending in the vertical direction in the third projection image 600. The icon 632, the icon 633, and the icon 634 are displayed in the menu bar 631.

[0139] The icon 632 corresponds to the icon JC. That is, when replacing the first image 610 and displaying an image obtained by performing a process of reducing visibility on the first image 610, the user operates the icon 632.

[0140] The icon 633 and the icon 634 respectively accept operations different from those of the icon 632.

[0141] Figure 6 It is a diagram showing a fourth projected image 700 including a first image P1, a second image P2, and a third image P3. When the user operates Figure 4 the icon 532 of the second projected image 500 shown, the fourth projected image 700 is displayed on the screen SC by the projection control unit 153.

[0142] As Figure 6 shown, the fourth projected image 700 includes a first image 710, a second image 720, and a third image 730. In the fourth projected image 700, the projection control unit 153 displays the first image 710 as a background image behind the second image 720 and the third image 730.

[0143] The first image 710 corresponds to an example of the first image P1.

[0144] The second image 720 corresponds to an example of the second image P2.

[0145] The third image 730 corresponds to an example of the third image P3.

[0146] When the user operates Figure 4 the icon 532 of the second projected image 500 shown, the image generation unit 152 generates a first image 710 obtained by performing a process of reducing the visibility of Figure 4 the first image 510 shown. The projection control unit 153 generates a projected image PM including the first image 710 generated by the image generation unit 152. Then, the projection control unit 153 causes the projector 1 to project the generated projected image PM and causes the screen SC to display the projected image PM. As Figure 6 shown, hatching is given to the first image 710, and the first image 710 is an image obtained by the image generation unit 152 performing a process of reducing visibility.

[0147] The first image 710 includes a projection surface image 711, a projector image 712, and a mounting table image 713.

[0148] The projection surface image 711 is an image representing the projection surface PS. The projection surface PS is, for example, the surface of a cylindrical column arranged indoors. A second projected image PM2 corresponding to the second content C2 is displayed on the projection surface PS. The second projected image PM2 includes, for example, an image of a fish.

[0149] The projector image 712 represents the image of the first projector PJ1. In the fourth projected image 700, the first projector PJ1 projects the second projected image PM2 corresponding to the second content C2 onto the projection surface PS.

[0150] The stage image 713 represents the image of the stage on which the first projector PJ1 is placed.

[0151] The second image 720 includes a thumbnail image 721, a thumbnail image 722, and a thumbnail image 723. In the fourth projected image 700, the projection control unit 153 arranges the second image 720 below the projection surface image 711 of the first image 710. The thumbnail image 721, the thumbnail image 722, and the thumbnail image 723 correspond to a plurality of thumbnail images PT.

[0152] The thumbnail image 721 is, for example, the second thumbnail image PT2. The second thumbnail image PT2 is a thumbnail image PT representing the second content C2.

[0153] The thumbnail image 722 is, for example, the third thumbnail image PT3. The third thumbnail image PT3 is a thumbnail image PT representing the third content C3.

[0154] The thumbnail image 723 is, for example, the fourth thumbnail image PT4. The fourth thumbnail image PT4 is a thumbnail image PT representing the fourth content C4.

[0155] In the fourth projected image 700, the projection control unit 153 displays the thumbnail image 721 larger than the thumbnail image 722 and the thumbnail image 723. By displaying in this way, the user can know that the second content C2 corresponding to the thumbnail image 721 is projected onto the projection surface PS.

[0156] The third image 730 includes a menu bar 731, an icon 732, an icon 733, and an icon 734. The projection control unit 153 arranges the third image 730 at the left end in the fourth projected image 700.

[0157] The menu bar 731 is displayed in a strip-shaped area extending in the vertical direction in the fourth projected image 700. The icon 732, the icon 733, and the icon 734 are displayed in the menu bar 731.

[0158] The icon 732 corresponds to the icon JC.

[0159] The icon 733 and the icon 734 respectively accept operations different from those of the icon 732.

[0160] Figure 7FIG. is a diagram showing a fifth projection image 800 including a first image P1, a second image P2, and a third image P3. In the initial state, the projection control unit 153 causes the projector 1 to project the fifth projection image 800 and display it on the screen SC.

[0161] As Figure 7 shown, the fifth projection image 800 includes a first image 810, a second image 820, and a third image 830.

[0162] The first image 810 corresponds to an example of the first image P1.

[0163] The second image 820 corresponds to an example of the second image P2.

[0164] The third image 830 corresponds to an example of the third image P3.

[0165] The first image 810 includes a two-dimensional barcode BC.

[0166] The two-dimensional barcode BC represents the URL (Uniform Resource Locator) of the server device 3 that publishes the first projection image PM1 projected onto the projection surface PS and the first moving image V1 representing the first projector PJ1.

[0167] The two-dimensional barcode BC is read by a smartphone (not shown), for example. Then, the first moving image V1 is acquired from the server device 3 by the smartphone. In addition, the first moving image V1 is displayed by the smartphone.

[0168] In this case, the acquisition unit 151 does not need to perform the process of acquiring the first moving image V1 to the ninth moving image V9. In addition, the projection control unit 153 does not need to project the Nth moving image VN (N = 1 to 9). Therefore, the processing of the first control unit 150 can be simplified.

[0169] The second image 820 includes a thumbnail image 821, a thumbnail image 822, and a thumbnail image 823. In the fifth projection image 800, the projection control unit 153 arranges the second image 820 below the first image 810. The thumbnail image 821, the thumbnail image 822, and the thumbnail image 823 correspond to a plurality of thumbnail images PT.

[0170] The thumbnail image 821 is, for example, the second thumbnail image PT2. The second thumbnail image PT2 is a thumbnail image PT representing the second content C2.

[0171] The thumbnail image 822 is, for example, the third thumbnail image PT3. The third thumbnail image PT3 is a thumbnail image PT representing the third content C3.

[0172] The thumbnail image 823 is, for example, the fourth thumbnail image PT4. The fourth thumbnail image PT4 is a thumbnail image PT representing the fourth content C4.

[0173] The third image 830 includes a menu bar 831, an icon 832, an icon 833, and an icon 834. The projection control unit 153 arranges the third image 830 at the left end in the fifth projection image 800.

[0174] The menu bar 831 is displayed in a strip-shaped area extending in the vertical direction in the fifth projection image 800. The icon 832, the icon 833, and the icon 834 are displayed in the menu bar 831.

[0175] The icon 832 corresponds to the icon JC.

[0176] The icon 833 and the icon 834 respectively accept operations different from those of the icon 832.

[0177] Next, refer to Figure 8 to describe the processing of the first control unit 150. Figure 8 It is a flowchart showing an example of the processing of the first control unit 150.

[0178] As Figure 8 shown, first, in step S101, the acquisition unit 151 acquires the first moving image V1 as the first image P1 from the server device 3.

[0179] Next, in step S103, the acquisition unit 151 acquires a plurality of thumbnail images PT as the second image P2. The acquisition unit 151 acquires, for example, the first thumbnail image PT1 to the ninth thumbnail image PT9 as the second image P2.

[0180] Next, in step S105, the projection control unit 153 synthesizes the first image P1, the second image P2, and the third image P3 to generate a projection image PM. The projection control unit 153, for example, synthesizes the first image P1 as a background image on the back of the second image P2 and the third image P3 to generate the projection image PM. The third image P3 is an image representing a menu bar including the icon JC.

[0181] Next, in step S107, the projection control unit 153 causes the projector 1 to project the projection image PM generated in step S105 and causes the screen SC to display the projection image PM.

[0182] Next, in step S109, the reception unit 154 determines whether an operation on the icon JC by the user has been received.

[0183] When the reception unit 154 determines that it has received the user's operation on the icon JC (step S109: Yes), the process proceeds to step S119. When the reception unit 154 determines that it has not received the user's operation on the icon JC (step S109: No), the process proceeds to step S111.

[0184] Then, in step S111, the reception unit 154 determines whether it has received the user's operation on the second thumbnail image PT2. The second thumbnail image PT2 is a thumbnail image PT representing the second content C2. The second thumbnail image PT2 is included in the plurality of thumbnail images PT that make up the second image P2.

[0185] When the reception unit 154 determines that it has not received the user's operation on the second thumbnail image PT2 (step S111: No), the process returns to step S109. When the reception unit 154 determines that it has received the user's operation on the second thumbnail image PT2 (step S111: Yes), the process proceeds to step S113.

[0186] Then, in step S113, the acquisition unit 151 acquires the second moving image V2 from the server device 3 as the first image P1.

[0187] Next, in step S115, the projection control unit 153 synthesizes the first image P1, the second image P2, and the third image P3 to generate a projection image PM.

[0188] Next, in step S117, the projection control unit 153 causes the projector 1 to project the projection image PM generated in step S115 and causes the screen SC to display the projection image PM. After that, the process ends.

[0189] When the result in step S109 is "Yes", in step S119, the image generation unit 152 generates an image obtained by performing a process of reducing the visibility on the first image P1. For example, the image generation unit 152 generates a first generated image U1 obtained by performing a process of reducing the visibility on each frame image of the first moving image V1.

[0190] Next, in step S121, the projection control unit 153 synthesizes the first image P1, the second image P2, and the third image P3 to generate a projection image PM. Additionally, the first image P1 is the first generated image U1 generated in step S121.

[0191] Next, in step S123, the projection control unit 153 causes the projector 1 to project the projection image PM generated in step S121 and causes the screen SC to display the projection image PM. After that, the process ends.

[0192] This Embodiment and Its Effects

[0193] As described above with reference to the accompanying drawings, the display control method of the present embodiment is a display control method including causing the projector 1 to display a first image P1 and a second image P2. The first image P1 represents a state in which the first projector PJ1 projects a first projected image PM1 corresponding to the first content C1 onto the projection surface PS. The second image P2 is a plurality of thumbnail images PTN (N = 1 to M) respectively representing a plurality of contents CN (N = 1 to M) corresponding to the projected images PM that can be projected by the second projector PJ2.

[0194] That is, the projector 1 displays the first image P1 and the second image P2. The first image P1 represents a state in which the first projector PJ1 projects a first projected image PM1 corresponding to the first content C1 onto the projection surface PS. The second image P2 is a plurality of thumbnail images PTN (N = 1 to M) respectively representing a plurality of contents CN (N = 1 to M) corresponding to the projected images PM that can be projected by the second projector PJ2.

[0195] Therefore, by referring to the first image P1, the user can easily grasp or imagine the situation of the projection surface, for example, the situation where the projected images PM corresponding to the plurality of contents CN (N = 1 to M) can be projected onto the projection surface PS by the second projector PJ2. Thus, the user can easily understand the usage methods of the plurality of contents CN.

[0196] In addition, by referring to the first image P1, the user can, for example, learn about the situation of the projection surface where the projected images PM corresponding to the plurality of contents CN (N = 1 to M) can be projected onto the projection surface PS by the second projector PJ2. Therefore, the user can learn the technology related to the usage method of the projector PJ.

[0197] In addition, in the above display control method, the first image P1 is a moving image including the first projected image PM1 projected onto the projection surface PS and an image representing the first projector PJ1, and the first image P1 is displayed on the projector 1 as a background image behind the second image P2.

[0198] Therefore, since the first image P1 is a moving image including the first projected image PM1 projected onto the projection surface PS and an image representing the first projector PJ1, the user can confirm the positional relationship between the projection surface PS and the first projector PJ1. Therefore, by referring to the first image P1, the user can, for example, learn about the projection surface where the projected images PM corresponding to the plurality of contents CN (N = 1 to M) can be projected onto the projection surface PS by the second projector PJ2.

[0199] Moreover, since the projector 1 displays the first image P1 as a background image behind the second image P2, it is possible to suppress the second image P2 from being difficult to see due to the first image P1.

[0200] In addition, in the above display control method, a plurality of thumbnail images PTN (N = 1 to M) include a first thumbnail image PT1 representing a first content C1.

[0201] Therefore, the user can confirm the first content C1 corresponding to the first projection image PM1 projected onto the projection surface PS in the first image P1. Thus, the user can deepen the understanding of the state in which the first projection image PM1 corresponding to the first content C1 is projected onto the projection surface PS in the first image P1.

[0202] Furthermore, in the above display control method, it includes: accepting an operation of selecting one thumbnail image from a plurality of thumbnail images PTN (N = 1 to M); and when the second thumbnail image PT2 corresponding to a second content C2 different from the first content C1 is selected, causing the projector 1 to display an image representing the state in which the first projector PJ1 projects the second projection image PM2 corresponding to the second content C2 onto the projection surface PS.

[0203] Therefore, by referring to the above image, the user can confirm the state in which the first projector PJ1 projects the second projection image PM2 corresponding to the second content C2 onto the projection surface PS. Thus, for example, the user can learn that a projection surface like that can project the projection images PM corresponding to the plurality of contents CN (N = 1 to M) onto the projection surface PS by the second projector PJ2.

[0204] In addition, in the above display control method, it includes: causing the projector 1 to display an icon JC; when an operation of the user on the icon JC is accepted, causing the projector 1 to display an image obtained by performing a process of reducing the visibility on the first image P1; and accepting an operation of selecting one thumbnail image from a plurality of thumbnail images PTN (N = 1 to M).

[0205] Therefore, since an image obtained by performing a process of reducing the visibility on the first image P1 is displayed instead of the first image P1, the user can easily pay attention to the plurality of thumbnail images PTN (N = 1 to M). Thus, it is possible to facilitate the operation of the user to select one thumbnail image from the plurality of thumbnail images PTN (N = 1 to M).

[0206] Furthermore, in the above display control method, the process of reducing the visibility includes at least one of a blurring process, a mosaic process, and a brightness reduction process.

[0207] Thus, it is possible to easily generate an image obtained by performing a process of reducing the visibility on the first image P1.

[0208] In addition, in the above display control method, the first image P1 is a two-dimensional barcode BC representing the URL of the server device 3, and the server device 3 distributes a first projection image PM1 projected onto the projection surface PS and a first moving image V1 representing the image of the first projector PJ1. For example, the display control method includes: causing the smartphone to display the first moving image V1 obtained from the server device 3 based on the URL.

[0209] Therefore, for example, the smartphone displays the first moving image V1 obtained from the server device 3 based on the URL shown by the two-dimensional barcode BC, and thus, the processing of the projector 1 can be simplified.

[0210] The projector 1 of the present embodiment displays the first image P1 and the second image P2. The first image P1 represents a state in which the first projector PJ1 projects a first projection image PM1 corresponding to the first content C1 onto the projection surface PS, and the second image P2 is a plurality of thumbnail images PTN (N = 1 to M) respectively representing a plurality of contents CN (N = 1 to M) corresponding to the projection images PM that the second projector PJ2 can project.

[0211] Therefore, the projector 1 of the present embodiment can achieve the same effect as the display control method of the present embodiment.

[0212] The first control program PG1 of the present embodiment causes the first processor 150A that controls the projector 1 to execute the following processing: causing the projector 1 to display the first image P1 and the second image P2, where the first image P1 represents a state in which the first projector PJ1 projects a first projection image PM1 corresponding to the first content C1 onto the projection surface PS, and the second image P2 is a plurality of thumbnail images PTN (N = 1 to M) respectively representing a plurality of contents CN (N = 1 to M) corresponding to the projection images PM that the second projector PJ2 can project.

[0213] Therefore, the first control program PG1 of the present embodiment can achieve the same effect as the display control method of the present embodiment.

[0214] Other embodiments

[0215] The above-described present embodiment is a preferred embodiment. However, it is not limited to the above-described present embodiment, and various modifications can be made without departing from the gist.

[0216] In the present embodiment, the case where the "display device" is the projector 1 is described, but the embodiment is not limited thereto. The "display device" may be, for example, a personal computer connected to a display. In addition, the "display device" may be, for example, a tablet device or a smartphone.

[0217] In the present embodiment, a case where the "second projector" is the projector 1 is described, but the embodiment is not limited thereto. The "second projector" may be the same projector as the "first projector" or a different projector from the "first projector".

[0218] In the present embodiment, a case where the projection surface PS is the surface of a cylindrical column arranged indoors is described, but the embodiment is not limited thereto. The projection surface PS only needs to be the surface of an object different from the screen SC. The projection surface PS may also be, for example, the wall surface of a room. Additionally, the projection surface PS may also be, for example, the wall surface of a classroom, a lecture hall, or a gymnasium. Furthermore, the projection surface PS may also be the wall surface of a building as in projection mapping.

[0219] In the present embodiment, a case where the "object" is the icon JC is described, but the embodiment is not limited thereto. The "object" may also be, for example, a button object. The "object" may also be, for example, an image.

[0220] In the present embodiment, a case where the first image P1 includes the first projected image PM1 projected onto the projection surface PS and an image representing the first projector PJ1 is described, but the embodiment is not limited thereto. The first image P1 only needs to be an image capturing the state where the first projector PJ1 projects the first projected image PM1 corresponding to the first content C1 onto the projection surface PS. For example, the first image P1 may not include an image representing the first projector PJ1. In this case, it is sufficient to display an image indicating the position of the first projector PJ1 relative to the projection surface PS.

[0221] In addition, Figure 2 Each of the functional units shown represents a functional structure, and there is no particular limitation on the specific installation method. That is, it is not necessarily required to install hardware corresponding to each functional unit, and it may also be configured to implement the functions of multiple functional units by executing a program with one processor. Additionally, in the above embodiment, a part of the functions implemented by software may be implemented by hardware, or a part of the functions implemented by hardware may be implemented by software. Furthermore, Figure 1 The specific detailed structure of each part of the projector 1 shown can also be arbitrarily changed within the scope not departing from the gist.

[0222] Furthermore, Figure 8 The processing units of the flowchart shown are divided according to the main processing content for easy understanding of the processing of the first control unit 150 of the projector 1. Not limited to Figure 8 the division method and name of the processing units shown in the flowchart, the processing can be divided into more processing units according to the processing content, or one processing unit can include more processing. Additionally, the processing order of the above flowchart is not limited to the example shown.

[0223] In addition, the "display control method" can be implemented by causing the first processor 150A included in the projector 1 to execute a first control program PG1 corresponding to the display control method. Further, the first control program PG1 can also be pre-recorded in a recording medium recorded in a computer-readable manner.

[0224] As the recording medium, a magnetic, optical recording medium, or semiconductor storage device can be used. Specifically, removable or fixed recording media such as a floppy disk, HDD, CD-ROM (Compact Disk Read Only Memory), DVD, Blu-ray (registered trademark) Disc, magneto-optical disk, flash memory, and card-type recording media can be cited. Further, the recording medium can also be a non-volatile storage device such as RAM, ROM, or HDD that is an internal storage device included in the projector 1.

[0225] By storing the first control program PG1 in a server device or the like and downloading the first control program PG1 from the server device to the projector 1, the display control method can also be implemented.

[0226] Supplementary Note

[0227] Hereinafter, a summary of the present disclosure will be appended.

[0228] (Supplementary Note 1) A display control method, wherein the display control method includes: causing a display device to display a first image and a second image, the first image representing a state in which a first projector projects a first projected image corresponding to a first content onto a projection surface, and the second image being a plurality of thumbnail images respectively representing a plurality of contents corresponding to projected images that can be projected by a second projector.

[0229] Thereby, the display device displays the first image and the second image. The first image is an image obtained by photographing a state in which the first projector projects the first projected image corresponding to the first content onto the projection surface. The second image is a plurality of thumbnail images respectively representing a plurality of contents corresponding to projected images that can be projected by the second projector.

[0230] Therefore, by referring to the first image, a user can, for example, grasp or imagine a method of using projected images corresponding to a plurality of contents by the second projector.

[0231] (Supplementary Note 2) The display control method according to Supplementary Note 1, wherein the first image is a moving image including the first projected image projected onto the projection surface and an image representing the first projector, and the display device displays the first image as a background image behind the second image.

[0232] Accordingly, the user can confirm the positional relationship between the projection surface and the first projector. Thus, by referring to the first image, the user can learn, for example, that the projection images corresponding to the plurality of contents can be projected onto the projection surface by the second projector. Further, since the first image is displayed as a background image on the back of the second image on the display device, it is possible to prevent the second image from being difficult to see due to the first image.

[0233] (Supplementary Note 3) According to the display control method described in Supplementary Note 2, wherein the plurality of thumbnail images includes a first thumbnail image representing the first content.

[0234] Accordingly, the user can confirm the first content corresponding to the projection image projected onto the projection surface in the first image. Thus, the user can deepen the understanding of the state in which the projection image corresponding to the first content is projected onto the projection surface in the first image.

[0235] (Supplementary Note 4) According to the display control method described in any one of Supplementary Notes 1 to 3, the display control method includes: accepting an operation of selecting one thumbnail image from the plurality of thumbnail images; and when a thumbnail image corresponding to a second content different from the first content is selected, causing the display device to display an image representing a state in which the first projector projects a second projection image corresponding to the second content onto the projection surface.

[0236] Accordingly, by referring to this image, the user can confirm the state in which the first projector projects the second projection image corresponding to the second content onto the projection surface. Thus, the user can learn, for example, that the projection images corresponding to the plurality of contents can be projected onto the projection surface by the second projector.

[0237] (Supplementary Note 5) According to the display control method described in any one of Supplementary Notes 1 to 4, the display control method includes: causing the display device to display an object; when an operation of the user on the object is accepted, causing the display device to display an image obtained by performing a visibility reduction process on the first image; and accepting an operation of selecting one thumbnail image from the plurality of thumbnail images.

[0238] Accordingly, an image obtained by performing a visibility reduction process on the first image is displayed in place of the first image, so that the user can easily pay attention to the plurality of thumbnail images. Thus, it is possible to facilitate the operation of the user to select one thumbnail image from the plurality of thumbnail images.

[0239] (Supplementary Note 6) According to the display control method described in Supplementary Note 5, wherein the visibility reduction process includes at least one of a blurring process, a mosaic process, and a brightness reduction process.

[0240] Accordingly, it is possible to easily generate an image obtained by performing a visibility reduction process on the first image.

[0241] (Appendix Note 7) The display control method according to any one of Appendix Notes 1 to 6, wherein the first image is a two-dimensional barcode representing the URL of a server device that publishes a moving image including the first projection image projected onto the projection surface and an image representing the first projector, and causes a second display device different from the display device to display the moving image obtained from the server device based on the URL.

[0242] Thus, for example, a smartphone displays the first moving image obtained from a server device based on the URL shown by the two-dimensional barcode, so that the processing of the display device can be simplified.

[0243] (Appendix Note 8) A display device that displays a first image and a second image, the first image representing a state in which a first projector has projected a first projection image corresponding to a first content onto a projection surface, and the second image being a plurality of thumbnail images respectively representing a plurality of contents corresponding to projection images that can be projected by a second projector.

[0244] Thus, the display device described in Appendix Note 8 has the same effect as the display control method described in Appendix Note 1.

[0245] (Appendix Note 9) A display control program that causes a computer controlling a display device to perform the following processing: causing the display device to display a first image and a second image, the first image representing a state in which a first projector has projected a first projection image corresponding to a first content onto a projection surface, and the second image being a plurality of thumbnail images respectively representing a plurality of contents corresponding to projection images that can be projected by a second projector.

[0246] Thus, the display control program described in Appendix Note 9 has the same effect as the display control method described in Appendix Note 1.

Claims

1. A display control method, wherein, The display control method includes: Causing a display device to display a first image and a second image, where the first image represents a state in which a first projector projects a first projected image corresponding to a first content onto a projection surface, and the second image is a plurality of thumbnail images respectively representing a plurality of contents corresponding to the projected images that the second projector can project.

2. The display control method according to claim 1, wherein: The first image is a moving image including the first projected image projected onto the projection surface and an image representing the first projector. Causing the display device to display the first image as a background image behind the second image.

3. The display control method according to claim 2, wherein: The plurality of thumbnail images includes a first thumbnail image representing the first content.

4. The display control method according to any one of claims 1 to 3, wherein: The display control method includes: Accepting an operation of selecting one thumbnail image from the plurality of thumbnail images; and When a thumbnail image corresponding to a second content different from the first content is selected, causing the display device to display an image representing a state in which the first projector projects a second projected image corresponding to the second content onto the projection surface.

5. The display control method according to any one of claims 1 to 3, wherein: The display control method includes: Causing the display device to display an object; When an operation of the user on the object is accepted, causing the display device to display an image obtained by performing a visibility reduction process on the first image; And Accepting an operation of selecting one thumbnail image from the plurality of thumbnail images.

6. The display control method according to claim 5, wherein: The visibility reduction process includes at least one of a blurring process, a mosaic process, and a brightness reduction process.

7. The display control method according to claim 1, wherein: The first image is a two-dimensional barcode representing the URL of a server device that publishes a moving image including the first projected image projected onto the projection surface and an image representing the first projector. The display control method includes: causing a second display device different from the display device to display the moving image obtained from the server device based on the URL.

8. A display device, wherein: The display device displays a first image and a second image, where the first image represents a state in which a first projector projects a first projected image corresponding to a first content onto a projection surface, and the second image is a plurality of thumbnail images respectively representing a plurality of contents corresponding to the projected images that the second projector can project.

9. A display control program product that causes a computer controlling a display device to perform the following processing: Causing the display device to display a first image and a second image, where the first image represents a state in which a first projector projects a first projected image corresponding to a first content onto a projection surface, and the second image is a plurality of thumbnail images respectively representing a plurality of contents corresponding to the projected images that the second projector can project.

Images