Display control method, display device, and display control program

Abstract

To enable a user to learn a technique relating to a method of utilizing a projector.SOLUTION: A display control method includes causing a projector 1 to display a first image P1 obtained by capturing an image of a state where a first projector PJ1 is projecting a first projection image PM1 corresponding to a first content C1, onto a projection surface PS, and a second image P2 that is a plurality of thumbnail images PTN, where N=1 to M, respectively indicating a plurality of contents CN, where N=1 to M, corresponding to a projection image PM that a second projector PJ2 can project.SELECTED DRAWING: Figure 8

Description

Technical Field

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

Background Art

[0002] For example, Patent Document 1 discloses an electronic device that provides a preview of a video by playing a highlight video of the video included in a content list based on information regarding the content list provided by a server.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the technique described in Patent Document 1, since only a simple preview of a moving image is displayed, it has been difficult for a user to grasp and imagine a method of utilizing content using a projector.

Means for Solving the Problems

[0005] One aspect of the present disclosure includes causing a display device to display a first image indicating a state in which a first projector projects a first projection image corresponding to first content on a projection surface, and a second image that is a plurality of thumbnail images each indicating one of 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, on a projection surface, a first image indicating a state in which a first projector is projecting a first projection image corresponding to first content, and a second image that is a plurality of thumbnail images each indicating one of a plurality of contents corresponding to projection images that can be projected by a second projector.

[0007] Yet another aspect of the present disclosure is a display control program that causes a computer that controls the display device to cause the display device to display a first image indicating a state in which a first projector is projecting a first projection image corresponding to first content, and a second image that is a plurality of thumbnail images each indicating one of a plurality of contents corresponding to projection images that can be projected by a second projector.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Mode for Carrying Out the Invention

[0009] Hereinafter, the present embodiment will be described with reference to the drawings. First, referring to FIG. 1, the configuration of the projector 1 according to the present embodiment will be described. FIG. 1 is a diagram showing an example of the configuration of the projector 1 according to the present embodiment. As shown in FIG. 1, the projector 1 includes 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 the present embodiment, the projection unit 110 projects the image light PL corresponding to the projection image PM onto the screen SC. 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.

[0010] The projector 1 corresponds to an example of a "display device". Also, the projector 1 corresponds to an example of a "second projector". Also, the second projector PJ2 may be the same projector as the "first projector" or a different projector from the "first projector".

[0011] In the present embodiment, the 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 a management company that manages the server device 3. Also, the second projector PJ2 is the projector 1 owned by the user.

[0012] The light source unit 111 includes a light source 111A. The light source 111A is a solid light source such as an LED (Light Emitting Diode) or a laser light source, for example. In the present embodiment, the 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 may be a lamp light source such as a halogen lamp, a xenon lamp, or an ultra-high pressure mercury lamp.

[0013] In addition, the light source unit 111 may include a reflector that guides the light emitted by the light source 111A to the optical modulation device 112, and an auxiliary reflector. Further, the light source unit 111 may include a lens group for enhancing the optical characteristics of the projected light, a polarizing plate, or a light control element that reduces the amount of light emitted by the light source on the path to the optical modulation device 112. The light source driving unit 121 is connected to the internal bus 107, and lights and extinguishes 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 also connected to the internal bus 107.

[0014] The optical modulation device 112 includes, for example, three liquid crystal panels 115 corresponding to the three primary colors R, G, and B. R represents red, G represents green, and B represents blue. That is, the optical modulation device 112 includes a liquid crystal panel 115 corresponding to R-color light, a liquid crystal panel 115 corresponding to G-color light, and a liquid crystal panel 115 corresponding to B-color light. The light emitted by the light source unit 111 is separated into three-color light of RGB and is incident on the corresponding liquid crystal panels 115 respectively. Each of the three liquid crystal panels 115 is a transmissive liquid crystal panel, which modulates the transmitted light to generate first image light. The first image light that has passed through each liquid crystal panel 115 and has been modulated is synthesized by a synthetic optical system such as a cross-dichroic prism and is emitted to the projection optical system 113. In this embodiment, the case where the optical modulation device 112 includes a transmissive liquid crystal panel 115 as an optical modulation element will be described, but it is not limited thereto. The optical modulation element may be a reflective liquid crystal panel or a digital micromirror device.

[0015] The optical modulation device 112 is driven by an optical modulation device driving unit 122. The optical modulation device driving unit 122 is connected to the image processing unit 145. The light modulation device driver 122 receives image data corresponding to each of the primary colors R, G, and B from the image processing unit 145. The light modulation device driver 122 converts the input image data into a data signal suitable for the operation of the liquid crystal panel 115. Based on the converted data signal, the light modulation device driver 122 applies a voltage to each pixel of each liquid crystal panel 115 to draw an image on each liquid crystal panel 115.

[0016] The projection optical system 113 includes a projection lens, a mirror, etc. that form an image of the incident image light PL on the screen SC. The projection optical system 113 also includes a zoom mechanism that enlarges or reduces the image projected onto the screen SC, a focus adjustment mechanism that adjusts the focus, and a lens shift mechanism that adjusts the projection direction of the image light PL, etc.

[0017] The projector 1 further includes 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 to each other via an internal bus 107 so as to be capable of data communication.

[0018] The operation unit 131 includes various buttons and switches provided on the housing surface of the projector 1, generates an operation signal corresponding to the operation of these buttons and switches, and outputs it to the input interface 135. The input interface 135 includes a circuit that outputs the operation signal input from the operation unit 131 to the first control unit 150.

[0019] The remote control light receiving unit 133 receives the infrared signal transmitted from the remote control 2, decodes the received infrared signal, and generates an operation signal. The remote control light receiving unit 133 outputs the generated operation signal to the input interface 135. The input interface 135 includes a circuit that outputs the operation signal input from the remote control light receiving unit 133 to the first control unit 150.

[0020] The storage unit 137 is a storage device using, for example, a magnetic recording device such as an HDD (Hard Disk Drive), or a semiconductor memory device such as a flash memory or an 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 and the like. The storage unit 137 is an example of a non-transitory and computer-readable storage medium. The storage medium may be a medium such as a CD-ROM (Compact Disc-Read Only Memory) distributed to the user separately from the projector 1.

[0021] The first communication interface 141 is a communication interface that communicates with the server device 3 in accordance with, 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 signals transmitted through the connector. The first communication interface 141 is an interface board having the connector and the interface circuit, and is connected to the main board on which the first processor 150A of the first control unit 150 and the like are mounted. Alternatively, the connector and the interface circuit constituting the first communication interface 141 are mounted on the main board of the first control unit 150. The first communication interface 141 receives image data and the like from the server device 3.

[0022] The first control unit 150 includes a first memory 150B and a first processor 150A. The first memory 150B is a storage device that non-volatilely stores programs and data executed by the first processor 150A. The first memory 150B is composed of a magnetic storage device, a semiconductor memory element such as a flash ROM (Read Only Memory), or other types of non-volatile storage devices. Further, the first memory 150B may include a RAM (Random Access Memory) that constitutes the work area of the first processor 150A. The first memory 150B stores data processed by the first control unit 150 and the first control program PG1 and the like executed by the first processor 150A. The first control unit 150 controls the operations of each part of the projector 1.

[0023] The first processor 150A may be composed of a single processor or may be configured such that a plurality of 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 an operation received by the operation unit 131 and the remote controller 2, and parameters used for this image processing, to the image processing unit 145. The parameters include, for example, geometric correction parameters for correcting geometric distortion of the image projected onto the screen SC. Further, the first processor 150A controls the light source driving unit 121 to control the lighting and extinguishing of the light source unit 111, and also adjusts the output of the light source unit 111, that is, the light amount. The first processor 150A is an example of a computer that controls the projector 1 as a display device. The computer may be a personal computer connected to the projector 1 to control the projector 1.

[0024] The first processor 150A may be composed of a SoC (System on Chip) integrated with part or all of the first memory 150B and other circuits. Also, 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 predetermined arithmetic processing. All functions of the first processor 150A may be implemented in hardware, or may be configured using a programmable device.

[0025] The image processing unit 145 and the frame memory 143 can be configured by, for example, an integrated circuit. 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). Also, an analog circuit may be included in part of the configuration 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.

[0026] The image processing unit 145 expands the image data input from the first communication interface 141 into the frame memory 143. The frame memory 143 has a plurality of banks. Each bank has a storage capacity capable of writing image data for one frame. The frame memory 143 is composed of, for example, SDRAM (Synchronous Dynamic Random Access Memory).

[0027] The image processing unit 145 performs image processing such as resolution conversion processing, resizing processing, distortion aberration correction, shape correction processing, digital zoom processing, and adjustment of the color tone and brightness of the image on the image data developed in the frame memory 143. Also, the image processing unit 145 generates a vertical synchronization signal obtained by converting the input frame frequency of the vertical synchronization signal into a drawing frequency. The generated vertical synchronization signal is referred to as an output synchronization signal. The image processing unit 145 outputs the generated output synchronization signal to the light modulation device driving unit 122.

[0028] Next, with reference to FIG. 2, the configuration of the first control unit 150 of the projector 1 will be described. FIG. 2 is a diagram showing an example of the configuration of the first control unit 150 of the projector 1. As shown in FIG. 2, the first control unit 150 includes 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 by the cooperation of software and hardware, for example, when the first processor 150A executes the first control program PG1. The first control program PG1 corresponds to an example of a "display control program".

[0029] The image storage unit 156 stores, for example, the first moving images V1 to the Mth moving images VM corresponding to the first content C1 to the Mth content CM. The integer M is, for example, "9". The Nth moving image VN (N = 1 to M) is a moving image obtained by imaging, 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. Also, 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 showing the first projector PJ1. The Nth moving image VN (N = 1 to M) is acquired from the server device 3 by the acquisition unit 151 and stored in the image storage unit 156 by the acquisition unit 151. Note that the moving image VN is stored in the server device 3 in advance. In the following description, the case where the integer M is "9" will be described.

[0030] 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. 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. Further, the projection image PM is stored in the image storage unit 156 by the projection control unit 153.

[0031] 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 showing a state where 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 imaging, with a video camera, a state where 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 may be, for example, an animation reproduced by computer graphics or the like showing a state where 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 projector PJ1 has the same configuration as the projector 1 shown in FIG. 1. The projection surface PS is, for example, the surface of a cylindrical column arranged indoors. The projection surface PS will be further described with reference to FIGS. 3 to 7.

[0032] The second image P2 is a plurality of thumbnail images PT each showing one of a plurality of contents corresponding to the projection image PM that the projector 1 can project. The plurality of thumbnail images PT includes the first thumbnail image PT1 showing the first content C1. The projector 1 corresponds to an example of the "second projector". In this embodiment, the plurality of thumbnail images PT are, for example, the first thumbnail image PT1 to the ninth thumbnail image PT9 showing each of the first content C1 to the ninth content C9. In other words, the Nth thumbnail image PTN shows 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. Also, 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.

[0033] The second image P2 is acquired from the server device 3 by the acquisition unit 151 and stored in the image storage unit 156 by the acquisition unit 151. Note that the first thumbnail image PT1 to the ninth thumbnail image PT9 are stored in the server device 3 in advance.

[0034] The third image P3 is an image showing a menu bar including the icon JC. The icon JC is operated by the user when an image obtained by performing a process of reducing the visibility with respect to the first image P1 is displayed in place of the first image P1. The icon JC corresponds to an example of an "object". The icon JC and the menu bar will be further described with reference to FIGS. 3 to 7.

[0035] The acquisition unit 151 acquires the first moving image V1 to the ninth moving image V9 from the server device 3. Also, the acquisition unit 151 stores the first moving image V1 to the ninth moving image V9 in the image storage unit 156. The acquisition unit 151 acquires the first thumbnail image PT1 to the ninth thumbnail image PT9 from the server device 3. Also, the acquisition unit 151 stores the first thumbnail image PT1 to the ninth thumbnail image PT9 in the image storage unit 156.

[0036] When the image generation unit 152 receives an operation from the user on the icon JC, it generates an image obtained by performing a process of reducing the visibility on the first image P1. The process of reducing the 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 the visibility is, for example, a "blurring process".

[0037] When the first image P1 is the first moving image V1, when the image generation unit 152 receives an operation from the user on the icon JC, it generates a first generated image U1 obtained by performing a process of reducing the visibility on the images of each frame constituting the first moving image V1. Then, the image generation unit 152 stores the generated first generated image U1 in the image storage unit 156. The icon JC functions as a graphical user interface for changing the display mode of the first image P1 and performing various settings.

[0038] When the first image P1 is the Nth moving image VN (N = 2 to 9), when the image generation unit 152 receives an operation from the user on the icon JC, it generates an Nth generated image UN obtained by performing a process of reducing the visibility on the images of each frame 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.

[0039] In the present embodiment, the case where the image generation unit 152 generates the Nth generated image UN when receiving an operation from the user on the icon JC will be described, but the embodiment is not limited thereto. Note that the Nth generated image UN is a moving image obtained by performing a process of reducing the visibility on the images of each frame 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.

[0040] The projection control unit 153 causes the projector 1 to project the projection image PM and display the projection image PM on the screen SC. 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 imaging, with a video 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 reproduced by computer graphics or the like of 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 showing one of a plurality of contents corresponding to the projection image PM that can be projected by the projector 1. The third image P3 is an image showing a menu bar including the icon JC.

[0041] The projection control unit 153 synthesizes the first image P1, the second image P2, and the third image P3 to generate the projection image PM. The projection control unit 153 causes the generated projection image PM to be projected by the projector 1 and displayed on the screen SC.

[0042] The projection control unit 153, for example, synthesizes the first image P1 as a background image behind the second image P2 and the third image P3 to generate the projection image PM. The projection control unit 153 causes the generated projection image PM to be stored in the image storage unit 156. 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. The projection image PM will be further described with reference to FIGS. 3 - 7.

[0043] When the reception unit 154 reduces the visibility of the first image P1 included in the projection image PM, it receives an operation from the user with respect to the icon JC. When the reception unit 154 receives an operation from the user for the icon JC, the image generation unit 152 generates an image obtained by performing a process of reducing the visibility of 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, projects the generated projection image PM onto the projector 1, and displays the projection image PM on the screen SC.

[0044] Further, when the reception unit 154 changes the moving image corresponding to the first image P1 included in the projection image PM, the reception unit 154 receives an operation from the user for any one of the plurality of thumbnail images PT constituting the second image P2. When the reception unit 154 receives an operation from the user for 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.

[0045] For example, a case where the plurality of thumbnail images PT constituting the second image P2 includes the second thumbnail image PT2 will be described. When an operation from the user for the second thumbnail image PT2 of the plurality of thumbnail images PT constituting the second image P2 is received while the first moving image V1 is being displayed as the first image P1, the projection control unit 153 executes 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. The projection control unit 153, for example, uses the image of each frame of the second moving image V2 as the first image P1, synthesizes the first image P1 as a background image behind the second image P2 and the third image P3, and generates the projection image PM. Then, the projection control unit 153 projects the generated projection image PM onto the projector 1 and displays the projection image PM on the screen SC.

[0046] 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. Further, 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.

[0047] Next, with reference to FIGS. 3 to 6, the projected image PM will be further described. The projected image PM is projected onto the projector 1 by the projection control unit 153 and is displayed on the screen SC. FIG. 3 is a diagram showing a first projected image 400 including a first image P1, a second image P2, and a third image P3. The first projected image 400 is projected onto the projector 1 by the projection control unit 153 and is displayed on the screen SC in the initial state. As shown in FIG. 3, the first projected image 400 includes a first image 410, a second image 420, and a third image 430. In the first projected image 400, the first image 410 is displayed as a background image behind the second image 420 and the third image 430. The first image 410 corresponds to an example of the first image P1. The second image 420 corresponds to an example of the second image P2. The third image 430 corresponds to an example of the third image P3.

[0048] The first image 410 includes a projection surface image 411, a projector image 412, and a mounting table image 413. The projection surface image 411 is an image showing the projection surface PS. The projection surface PS is, for example, the surface of a cylindrical column arranged indoors. A first projected image PM1 corresponding to the first content C1 is displayed on the projection surface PS. The first projected image PM1 includes, for example, an image of a mountain and an image of the sun.

[0049] The projector image 412 is an image showing the first projector PJ1. In the first projected image 400, the first projector PJ1 projects the first projected image PM1 corresponding to the first content C1 onto the projection surface PS. The mounting table image 413 is an image showing the mounting table on which the first projector PJ1 is mounted.

[0050] The second image 420 includes a thumbnail image 421, a thumbnail image 422, and a thumbnail image 423. In the first projected image 400, the projection control unit 153 disposes the second image 420 below the projected 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.

[0051] The thumbnail image 421 is, for example, the second thumbnail image PT2. The second thumbnail image PT2 is a thumbnail image PT indicating the second content C2. The thumbnail image 422 is, for example, the third thumbnail image PT3. The third thumbnail image PT3 is a thumbnail image PT indicating the third content C3. The thumbnail image 423 is, for example, the fourth thumbnail image PT4. The fourth thumbnail image PT4 is a thumbnail image PT indicating the fourth content C4.

[0052] The third image 430 includes a menu bar 431, an icon 432, an icon 433, and an icon 434. The projection control unit 153 disposes the third image 430 at the left end in the first projected image 400. The menu bar 431 is displayed in a strip-shaped region extending in the vertical direction in the first projected image 400. The icon 432, the icon 433, and the icon 434 are displayed on the menu bar 431.

[0053] The icon 432 corresponds to the icon JC. That is, the icon 432 is operated by the user when an image obtained by performing a process of reducing the visibility with respect to the first image 410 is displayed in place of the first image 410. Each of the icon 433 and the icon 434 accepts an operation different from that of the icon 432.

[0054] FIG. 4 is a diagram showing a second projected image 500 including a first image P1, a second image P2, and a third image P3. The second projected image 500 is displayed on the screen SC by the projection control unit 153 when the thumbnail image 421 of the first projected image 400 shown in FIG. 3 is operated by the user. As shown in FIG. 4, the second projected image 500 includes a first image 510, a second image 520, and a third image 530. In the second projected 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. The first image 510 corresponds to an example of the first image P1. The second image 520 corresponds to an example of the second image P2. The third image 530 corresponds to an example of the third image P3.

[0055] The first image 510 includes a projection surface image 511, a projector image 512, and a mounting table image 513. The projection surface image 511 is an image showing 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.

[0056] The projector image 512 is an image showing the first projector PJ1. In the second projected image 500, the first projector PJ1 projects a second projected image PM2 corresponding to the second content C2 onto the projection surface PS. The mounting table image 513 is an image showing the mounting table on which the first projector PJ1 is mounted.

[0057] The second image 520 includes a thumbnail image 521, a thumbnail image 522, and a thumbnail image 523. In the second projected 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.

[0058] The thumbnail image 521 is, for example, the second thumbnail image PT2. The second thumbnail image PT2 is a thumbnail image PT that shows the second content C2. The thumbnail image 522 is, for example, the third thumbnail image PT3. The third thumbnail image PT3 is a thumbnail image PT that shows the third content C3. The thumbnail image 523 is, for example, the fourth thumbnail image PT4. The fourth thumbnail image PT4 is a thumbnail image PT that shows the fourth content C4. In the second projected image 500, the projection control unit 153 displays the thumbnail image 521 larger compared to the thumbnail image 522 and the thumbnail image 523. By displaying in this way, the user can know that the second content C2 corresponding to the thumbnail image 521 is projected on the projection surface PS.

[0059] The third image 530 includes a menu bar 531, an icon 532, an icon 533, and an icon 534. The projection control unit 153 arranges the third image 530 at the left end in the second projected image 500. The menu bar 531 is displayed in a strip-shaped area extending in the vertical direction in the second projected image 500. The icon 532, the icon 533, and the icon 534 are displayed on the menu bar 531.

[0060] The icon 532 corresponds to the icon JC. That is, the icon 532 is operated by the user when an image obtained by performing a process of reducing the visibility with respect to the first image 510 is displayed in place of the first image 510. Each of the icon 533 and the icon 534 accepts an operation different from that of the icon 532.

[0061] FIG. 5 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 thumbnail image 422 of the first projected image 400 shown in FIG. 3 is operated by the user. As shown in FIG. 5, the third projection image 600 includes a first image 610, a second image 620, and a third image 630. In the third projection image 600, the projection control unit 153 displays the first image 610 as a background image on the back of the second image 620 and the third image 630. The first image 610 corresponds to an example of the first image P1. The second image 620 corresponds to an example of the second image P2. The third image 630 corresponds to an example of the third image P3.

[0062] The first image 610 includes a projection surface image 611, a projector image 612, and a mounting table image 613. The projection surface image 611 is an image showing the projection surface PS. The projection surface PS is, for example, the surface of a cylindrical column arranged indoors. On the projection surface PS, a third projection image PM3 corresponding to the third content C3 is displayed. The third projection image PM3 includes, for example, an image of the moon and an image of stars.

[0063] The projector image 612 is an image showing the first projector PJ1. In the third projection image 600, the first projector PJ1 projects a third projection image PM3 corresponding to the third content C3 onto the projection surface PS. The mounting table image 513 is an image showing the mounting table on which the first projector PJ1 is mounted.

[0064] 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.

[0065] The thumbnail image 621 is, for example, the second thumbnail image PT2. The second thumbnail image PT2 is a thumbnail image PT showing the second content C2. The thumbnail image 622 is, for example, the third thumbnail image PT3. The third thumbnail image PT3 is a thumbnail image PT that shows the third content C3. The thumbnail image 523 is, for example, the fourth thumbnail image PT4. The fourth thumbnail image PT4 is a thumbnail image PT that shows the fourth content C4. In the third projection image 600, the projection control unit 153 displays the thumbnail image 622 prominently compared to the thumbnail image 621 and the thumbnail image 623. By displaying it 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.

[0066] 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. 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 on the menu bar 631.

[0067] The icon 632 corresponds to the icon JC. That is, the icon 632 is operated by the user when an image obtained by performing a process of reducing the visibility with respect to the first image 610 is displayed in place of the first image 610. Each of the icon 633 and the icon 634 accepts an operation different from that of the icon 632.

[0068] FIG. 6 is a diagram showing a fourth projection image 700 including a first image P1, a second image P2, and a third image P3. The fourth projection image 700 is displayed on the screen SC by the projection control unit 153 when the icon 532 of the second projection image 500 shown in FIG. 4 is operated by the user. As shown in FIG. 6, 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 on the back of the second image 720 and the third image 730. The first image 710 corresponds to an example of the first image P1. The second image 720 corresponds to an example of the second image P2. The third image 730 corresponds to an example of the third image P3.

[0069] When the icon 532 of the second projected image 500 shown in FIG. 4 is operated by the user, the image generation unit 152 generates the first image 710 obtained by performing a process of reducing the visibility with respect to the first image 510 shown in FIG. 4. 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 projects the generated projected image PM onto the projector 1 and displays the projected image PM on the screen SC. As shown in FIG. 6, the first image 710 is shaded, indicating that the first image 710 is an image that has been processed by the image generation unit 152 to reduce visibility.

[0070] The first image 710 includes a projection surface image 711, a projector image 712, and a mounting table image 713. The projection surface image 711 is an image showing 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.

[0071] The projector image 712 is an image showing the first projector PJ1. In the fourth projected image 700, the first projector PJ1 projects a second projected image PM2 corresponding to the second content C2 onto the projection surface PS. The mounting table image 713 is an image showing the mounting table on which the first projector PJ1 is mounted.

[0072] 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 projected 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.

[0073] The thumbnail image 721 is, for example, the second thumbnail image PT2. The second thumbnail image PT2 is a thumbnail image PT that shows the second content C2. The thumbnail image 722 is, for example, the third thumbnail image PT3. The third thumbnail image PT3 is a thumbnail image PT that shows the third content C3. The thumbnail image 723 is, for example, the fourth thumbnail image PT4. The fourth thumbnail image PT4 is a thumbnail image PT that shows the fourth content C4. In the fourth projected image 700, the projection control unit 153 displays the thumbnail image 721 larger compared to the thumbnail image 722 and the thumbnail image 723. By displaying it in this way, the user can know that the second content C2 corresponding to the thumbnail image 721 is projected on the projection surface PS.

[0074] 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. The menu bar 731 is displayed in a strip-shaped area that extends vertically in the fourth projected image 700. The icon 732, the icon 733, and the icon 734 are displayed on the menu bar 731.

[0075] The icon 732 corresponds to the icon JC. Each of the icon 733 and the icon 734 accepts an operation different from that of the icon 732.

[0076] FIG. 7 is a diagram showing a fifth projected image 800 including a first image P1, a second image P2, and a third image P3. In the initial state, the fifth projected image 800 is projected by the projection control unit 153 onto the projector 1 and displayed on the screen SC. As shown in FIG. 7, the fifth projected image 800 includes a first image 810, a second image 820, and a third image 830. The first image 810 corresponds to an example of the first image P1. The second image 820 corresponds to an example of the second image P2. The third image 830 corresponds to an example of the third image P3.

[0077] The first image 810 includes a two-dimensional barcode BC. The two-dimensional barcode BC indicates the URL (Uniform Resource Locator) of the server device 3 that distributes the first moving image V1 including the first projected image PM1 projected onto the projection surface PS and the image indicating the first projector PJ1. The two-dimensional barcode BC is read, for example, by a smartphone (not shown). Then, the first moving image V1 is acquired from the server device 3 by the smartphone, and the first moving image V1 is displayed by the smartphone.

[0078] In this case, it is not necessary for the acquisition unit 151 to execute the process of acquiring the first moving image V1 to the ninth moving image V9. Further, 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.

[0079] The second image 820 includes a thumbnail image 821, a thumbnail image 822, and a thumbnail image 823. In the fifth projected 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.

[0080] The thumbnail image 821 is, for example, the second thumbnail image PT2. The second thumbnail image PT2 is a thumbnail image PT that shows the second content C2. The thumbnail image 822 is, for example, the third thumbnail image PT3. The third thumbnail image PT3 is a thumbnail image PT that shows the third content C3. The thumbnail image 823 is, for example, the fourth thumbnail image PT4. The fourth thumbnail image PT4 is a thumbnail image PT that shows the fourth content C4.

[0081] 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. The menu bar 831 is displayed in a strip-shaped area that extends vertically in the fifth projection image 800. The icon 832, the icon 833, and the icon 834 are displayed on the menu bar 831.

[0082] The icon 832 corresponds to the icon JC. Each of the icon 833 and the icon 834 accepts an operation different from that of the icon 832.

[0083] Next, with reference to FIG. 8, the processing of the first control unit 150 will be described. FIG. 8 is a flowchart showing an example of the processing of the first control unit 150. As shown in FIG. 8, first, in step S101, the acquisition unit 151 acquires the first moving image V1 as the first image P1 from the server device 3. 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.

[0084] 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. For example, 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 to generate the projection image PM. The third image P3 is an image showing a menu bar including the icon JC. Next, in step S107, the projection control unit 153 causes the projector 1 to project the projection image PM generated in step S105 and display the projection image PM on the screen SC. Next, in step S109, the reception unit 154 determines whether it has received an operation from the user with respect to the icon JC. If the reception unit 154 determines that it has received an operation from the user with respect to the icon JC (step S109; YES), the process proceeds to step S119. If the reception unit 154 determines that it has not received an operation from the user with respect to the icon JC (step S109; NO), the process proceeds to step S111.

[0085] Then, in step S111, the reception unit 154 determines whether it has received an operation from the user with respect to the second thumbnail image PT2. The second thumbnail image PT2 is a thumbnail image PT showing the second content C2. The second thumbnail image PT2 is included in a plurality of thumbnail images PT constituting the second image P2. If the reception unit 154 determines that it has not received an operation from the user with respect to the second thumbnail image PT2 (step S111; NO), the process returns to step S109. If the reception unit 154 determines that it has received an operation from the user with respect to the second thumbnail image PT2 (step S111; YES), the process proceeds to step S113.

[0086] Then, in step S113, the acquisition unit 151 acquires the second moving image V2 from the server device 3 as the first image P1. 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. Next, in step S117, the projection control unit 153 causes the projector 1 to project the projection image PM generated in step S115, and displays the projection image PM on the screen SC. Then, the process ends.

[0087] If the answer in step S109 is YES, then in step S119, the image generation unit 152 generates an image obtained by performing a process of reducing the visibility of 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 of the image of each frame constituting the first moving image V1, and generates the first generated image U1. 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. Note that the first image P1 is the first generated image U1 generated in step S121. Next, in step S123, the projection control unit 153 causes the projector 1 to project the projection image PM generated in step S121, and displays the projection image PM on the screen SC. Then, the process ends.

[0088] [This Embodiment and Operational Effects] As described above with reference to the drawings, the display control method according to this embodiment includes a first image P1 indicating a state in which the first projector PJ1 projects a first projection image PM1 corresponding to the first content C1 on the projection surface PS, and a second image P2 that is a plurality of thumbnail images PTN (N = 1 to M) each indicating each of a plurality of contents CN (N = 1 to M) corresponding to a projection image PM that the second projector PJ2 can project, and causing the projector 1 to display them.

[0089] That is, the projector 1 displays the first image P1 and the second image P2. The first image P1 shows 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) each showing a plurality of contents CN (N = 1 to M) corresponding to a projected image PM that can be projected by the second projector PJ2. Therefore, by referring to the first image P1, the user can easily grasp or imagine that, for example, the second projector PJ2 can project a projected image PM corresponding to each of the plurality of contents CN (N = 1 to M) onto a projection surface such as the projection surface PS. As a result, the user can easily understand how to utilize the plurality of contents CN. Also, by referring to the first image P1, the user can learn that, for example, the second projector PJ2 can project a projected image PM corresponding to each of the plurality of contents CN (N = 1 to M) onto a projection surface such as the projection surface PS. Therefore, the user can acquire the technology regarding how to use the projector PJ.

[0090] 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 showing the first projector PJ1, and the first image P1 is displayed on the projector 1 as a background image behind the second image P2. 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 showing 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 learn that, for example, the second projector PJ2 can project a projected image PM corresponding to each of the plurality of contents CN (N = 1 to M) onto a projection surface such as the projection surface PS. Also, since the first image P1 is displayed on the projector 1 as a background image behind the second image P2, it is possible to suppress the second image P2 from being difficult to visually recognize due to the first image P1.

[0091] In the above display control method, the plurality of thumbnail images PTN (N = 1 to M) include a first thumbnail image PT1 indicating the first content C1. Therefore, the user can check the first content C1 corresponding to the first projection image PM1 projected on the projection surface PS in the first image P1. Therefore, the user can deepen the understanding of the state in which the first projection image PM1 corresponding to the first content C1 is projected on the projection surface PS in the first image P1.

[0092] In the above display control method, accepting an operation of selecting one thumbnail image from the plurality of thumbnail images PTN (N = 1 to M), and when a second thumbnail image PT2 corresponding to a second content C2 different from the first content C2 is selected, causing the projector 1 to display an image showing a state in which the first projector PJ1 is projecting a second projection image PM2 corresponding to the second content C2 on the projection surface PS. Therefore, the user can check the state in which the first projector PJ1 is projecting the second projection image PM2 corresponding to the second content C2 on the projection surface PS by referring to the above image. Therefore, the user can learn that, for example, the second projector PJ2 can project projection images PM corresponding to each of the plurality of contents CN (N = 1 to M) on a projection surface such as the projection surface PS.

[0093] In the above display control method, causing the projector 1 to display the icon JC, and when an operation from the user on the icon JC is received, causing the projector 1 to display an image obtained by performing a process of reducing the visibility with respect to the first image P1, and accepting an operation of selecting one thumbnail image from the plurality of thumbnail images PTN (N = 1 to M). Therefore, in order to display, instead of the first image P1, an image obtained by performing a process of reducing the visibility with respect to the first image P1, the user can easily focus on a plurality of thumbnail images PTN (N = 1 to M). Therefore, it is possible to facilitate the operation of the user to select one thumbnail image from among the plurality of thumbnail images PTN (N = 1 to M).

[0094] Further, 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. Therefore, it is possible to easily generate an image obtained by performing a process of reducing the visibility with respect to the first image P1.

[0095] Further, in the above display control method, the first image P1 is a two-dimensional barcode BC indicating the URL of a server device 3 that distributes a first moving image V1 including a first projection image PM1 projected on a projection surface PS and an image indicating a first projector PJ1. For example, causing a smartphone to display the first moving image V1 acquired from the server device 3 based on the URL. Therefore, for example, since the smartphone displays the first moving image V1 acquired from the server device 3 based on the URL indicated by the two-dimensional barcode BC, the processing of the projector 1 can be simplified.

[0096] The projector 1 according to the present embodiment displays a first image P1 indicating a state in which the first projector PJ1 projects a first projection image PM1 corresponding to the first content C1 on the projection surface PS, and a plurality of thumbnail images PTN (N = 1 to M) each indicating a plurality of contents CN (N = 1 to M) corresponding to a projection image PM that the second projector PJ2 can project, as the second image P2. Therefore, the projector 1 according to the present embodiment can achieve the same effect as the display control method according to the present embodiment.

[0097] The first control program PG1 according to this embodiment causes the first processor 150A that controls the projector 1 to display on the projector 1 a first image P1 indicating a state in which the first projector PJ1 is projecting a first projection image PM1 corresponding to the first content C1 on the projection surface PS, and a second image P2 that is a plurality of thumbnail images PTN (N = 1 to M) each indicating each of a plurality of contents CN (N = 1 to M) corresponding to a projection image PM that the second projector PJ2 can project. Therefore, the first control program PG1 according to this embodiment can achieve the same effects as the display control method according to this embodiment.

[0098] [Other Embodiments] The above-described embodiment of the present invention is a preferred embodiment. However, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

[0099] In this embodiment, the case where the "display device" is the projector 1 is described, but the embodiment is not limited to this. The "display device" may be, for example, a personal computer connected to a display. Further, the "display device" may be, for example, a tablet device or a smartphone.

[0100] In this embodiment, the case where the "second projector" is the projector 1 is described, but the embodiment is not limited to this. The "second projector" may be the same projector as the "first projector" or a projector different from the "first projector".

[0101] In this embodiment, the case where the projection surface PS is the surface of a cylindrical column arranged indoors is described, but the embodiment is not limited to this. The projection surface PS may be the surface of an object different from the screen SC. The projection surface PS may be, for example, a wall surface of a room. Further, the projection surface PS may be, for example, a wall surface of a classroom, a lecture hall, or a gymnasium. Further, the projection surface PS may be, for example, a wall surface of a building as in projection mapping.

[0102] In this embodiment, the case where the "object" is the icon JC will be described, but the embodiment is not limited thereto. The "object" may be, for example, a button object. The "object" may be, for example, an image.

[0103] In this embodiment, the case where the first image P1 includes the first projected image PM1 projected on the projection surface PS and the image indicating the first projector PJ1 will be described, but the embodiment is not limited thereto. The first image P1 may be an image obtained by imaging the state in which the first projector PJ1 projects the first projected image PM1 corresponding to the first content C1 on the projection surface PS. For example, the first image P1 may not include the image indicating the first projector PJ1. In this case, an image or the like indicating the position of the first projector PJ1 with respect to the projection surface PS may be displayed.

[0104] In addition, each functional unit shown in FIG. 2 shows a functional configuration, and the specific implementation form is not particularly limited. That is, it is not necessarily the case that hardware corresponding individually to each functional unit is implemented, and it is also possible to adopt a configuration in which one processor executes a program to realize the functions of a plurality of functional units. Also, a part of the functions realized by software in the above embodiment may be realized by hardware, or a part of the functions realized by hardware may be realized by software. In addition, the specific detailed configuration of each part of the projector 1 shown in FIG. 1 can be arbitrarily changed without departing from the spirit.

[0105] In addition, the processing units of the flowchart shown in FIG. 8 are divided according to the main processing content in order to facilitate understanding of the processing of the first control unit 150 of the projector 1. The way of dividing and the names of the processing units shown in the flowchart of FIG. 8 are not limited, and according to the processing content, it can be further divided into more processing units, or it can be divided such that one processing unit includes more processing. Also, the processing order of the above flowchart is not limited to the illustrated example.

[0106] Also, the "display control method" can be realized by causing the first processor 150A provided 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 recorded on a recording medium that can be read by a computer. As the recording medium, a magnetic or optical recording medium or a semiconductor memory device can be used. Specifically, portable or fixed recording media such as flexible disks, HDDs, CD-ROMs (Compact Disk Read Only Memories), DVDs, Blu-ray (registered trademark) Discs, magneto-optical disks, flash memories, and card-type recording media can be mentioned. Further, the recording medium may be a non-volatile storage device such as a RAM, ROM, or HDD which is an internal storage device provided in the projector 1. The display control method can also be realized 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.

[0107] [Appendix] Hereinafter, a summary of the present disclosure will be appended. (Appendix 1) A display control method including causing a display device to display a first image indicating a state in which a first projector projects a first projection image corresponding to first content on a projection surface, and a second image which is a plurality of thumbnail images each indicating each of a plurality of contents corresponding to projection images that can be projected by a second projector.

[0108] Thereby, the display device displays the first image and the second image. The first image is an image obtained by imaging a state in which the first projector projects a first projection image corresponding to the first content on the projection surface. The second image is a plurality of thumbnail images each indicating each of a plurality of contents corresponding to projection images that can be projected by the second projector. Therefore, by referring to the first image, the user can, for example, understand or create how to utilize the projected images corresponding to each of the plurality of contents by means of the second projector.

[0109] (Appendix 2) The first image is a moving image including the first projected image projected on the projection surface and an image indicating the first projector, and the first image is caused to be displayed on the display device as a background image on the back of the second image. The display control method according to Appendix 1.

[0110] Thereby, the user can confirm the positional relationship between the projection surface and the first projector. Therefore, by referring to the first image, the user can learn, for example, that the projected images corresponding to each of the plurality of contents can be projected on the projection surface by means of the second projector. Further, since the first image is caused to be displayed on the display device as a background image on the back of the second image, it is possible to suppress the second image from being difficult to visually recognize due to the first image.

[0111] (Appendix 3) The plurality of thumbnail images include a first thumbnail image indicating the first content. The display control method according to Appendix 2.

[0112] Thereby, the user can confirm the first content corresponding to the projected image projected on the projection surface in the first image. Therefore, the user can deepen the understanding of the state in which the first projector is projecting the projected image corresponding to the first content on the projection surface in the first image.

[0113] (Appendix 4) Receiving 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 indicating a state in which the first projector is projecting a second projected image corresponding to the second content on the projection surface. The display control method according to any one of Appendices 1 to 3.

[0114] As a result, by referring to the third 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. Therefore, the user can learn, for example, that the second projector can project the projection images corresponding to each of the plurality of contents onto the projection surface.

[0115] (Appendix 5) A display control method according to any one of Appendices 1 to 4, including causing an object to be displayed on the display device, causing the display device to display an image obtained by performing a process of reducing the visibility with respect to the first image when an operation from the user with respect to the object is received, and receiving an operation of selecting one thumbnail image from the plurality of thumbnail images.

[0116] As a result, in order to display, instead of the first image, an image obtained by performing a process of reducing the visibility with respect to the first image, it becomes easier for the user to pay attention to the plurality of thumbnail images. Therefore, the operation for the user to select one thumbnail image from the plurality of thumbnail images can be facilitated.

[0117] (Appendix 6) The display control method according to Appendix 5, wherein the process of reducing the visibility includes at least one of a blurring process, a mosaic process, and a brightness reduction process.

[0118] As a result, an image obtained by performing a process of reducing the visibility with respect to the first image can be easily generated.

[0119] (Appendix 7) The first image is a two-dimensional barcode indicating the URL of a server device that distributes a moving image including the first projection image projected on the projection surface and an image indicating the first projector, and causing a second display device different from the display device to display the moving image acquired from the server device based on the URL. The display control method according to any one of Appendices 1 to 6.

[0120] As a result, for example, when a smartphone displays a first moving image acquired from a server device based on the URL indicated by a two-dimensional barcode, the processing of the display device can be simplified.

[0121] (Appendix 8) A display device that displays, on a projection surface, a first image showing a state in which a first projector projects a first projection image corresponding to first content, and a second image that is a plurality of thumbnail images each showing one of a plurality of contents corresponding to projection images that can be projected by a second projector.

[0122] As a result, the display device described in Appendix 8 has the same effect as the display control method described in Appendix 1.

[0123] (Appendix 9) A display control program that causes a computer that controls a display device to display, on the display device, a first image showing a state in which a first projector projects a first projection image corresponding to first content, and a second image that is a plurality of thumbnail images each showing one of a plurality of contents corresponding to projection images that can be projected by a second projector.

[0124] As a result, the display control program described in Appendix 9 has the same effect as the display control method described in Appendix 1.

Explanation of Reference Numerals

[0125] 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.

Claims

1. A first image showing a state in which a first projector projects a first projection image corresponding to first content onto a projection surface, and A second image that is a plurality of thumbnail images each showing one of a plurality of contents corresponding to a projection image that can be projected by a second projector, Causing the display device to display the above, A display control method including the above.

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

3. The plurality of thumbnail images include a first thumbnail image showing the first content, The display control method according to claim 2.

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

5. Causing an object to be displayed on the display device, and When an operation from a user with respect to the object is received, causing the display device to display an image obtained by performing a process of reducing visibility on the first image, and Receiving an operation of selecting one thumbnail image from the plurality of thumbnail images, and The display control method according to any one of claims 1 to 3, including the above.

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

7. The first image is a two-dimensional barcode showing a URL of a server device that distributes a moving image including the first projection image projected onto the projection surface and an image showing the first projector, Causing a second display device different from the display device to display the moving image acquired from the server device based on the URL, The display control method according to claim 1, including the above.

8. A first image showing a state in which a first projector projects a first projection image corresponding to first content onto a projection surface, A second image that is a plurality of thumbnail images each showing a corresponding one of a plurality of contents corresponding to a projection image that can be projected by the second projector, A display device that displays the same. **Claim 9** On a computer that controls the display device, A first image showing a state in which the first projector is projecting a first projection image corresponding to the first content onto the projection surface, A second image that is a plurality of thumbnail images each showing a corresponding one of a plurality of contents corresponding to a projection image that can be projected by the second projector, A display control program that causes the display device to display the same.

Images