JP6286974B2 - Projection apparatus, projection control method, and program - Google Patents

Description

  The present invention relates to a projection apparatus, a projection control method, and a program that are particularly suitable for electronic signboards installed in storefronts, product shelves and the like.

  2. Description of the Related Art Conventionally, there has been proposed a device equipped with a video output device in which video content is projected onto a humanoid screen or the like by rear projection projection in order to enhance the impression to the viewer. (For example, Patent Document 1)

JP 2011-150221 A

  In this type of digital signage (electronic signage) including the techniques described in the above-mentioned patent documents, the display element itself is used even though it has a rectangular display area. In many cases, the signboard portion to which the optical image formed in this way is projected is an indeterminate shape according to the content such as a humanoid shape as described above.

  For this reason, the display element displays a content image only in an area effective for projection according to the shape of the screen, while the surrounding area always displays a black image so that unnecessary light does not leak outside the screen. There is a problem that the display area of the display element is not effectively utilized.

  The present invention has been made in view of the above circumstances, and the object of the present invention is to effectively utilize a display area that is not originally used for projection when projecting an image on an irregular screen. An object of the present invention is to provide a projection device, a projection control method, and a program capable of further improving the appeal as a signboard.

One aspect of the present invention is a projection device, which is a projection unit that projects an image, a shape acquisition unit that acquires a shape of a screen on which an image is projected by the projection unit, and a screen shape acquired by the shape acquisition unit In response, the first projection control means for projecting the first image using a part of the projectable area by the projection means, and whether there is a transmission target in an area outside the screen in the projectable area. A determination unit configured to determine; and a second projection control unit configured to cause the projection unit to perform data transmission using visible light with respect to a transmission target in an area outside the screen according to a determination result of the determination unit. It is characterized by that.
Another aspect of the present invention is a projection apparatus, which is a projection unit that projects an image, a shape acquisition unit that acquires a shape of a screen on which an image is projected by the projection unit, and a screen acquired by the shape acquisition unit. The first projection control means for projecting the first image using a part of the projectable area by the projection means according to the shape of the image, and visible light by the projection means in an area outside the screen in the projectable area. And second projection control means for executing data transmission according to the above .

  According to the present invention, when an image is projected onto an irregular screen, a display area that is not originally used for projection can be effectively used to further improve the appeal as an electronic signboard.

1 is a perspective view showing an external configuration of a digital signage according to a first embodiment of the present invention. The side view which shows the structure of the projection optical system which concerns on the same embodiment. The figure which shows the allocation structure of the image within the projectable area | region which concerns on the same embodiment. FIG. 3 is a block diagram showing a functional configuration of the electronic circuit according to the embodiment. The figure which shows the some projection image memorize | stored in the memory card with which the memory card mounting part of FIG. 4 concerning the embodiment was mounted | worn, and its relationship. 6 is a flowchart showing processing details during a projection operation according to the embodiment. The block diagram which shows the function structure of the electronic circuit of the digital signage which concerns on the 2nd Embodiment of this invention. 6 is a flowchart showing processing details during a projection operation according to the embodiment.

(First embodiment)
Hereinafter, a first embodiment when the present invention is applied to a rear projection type digital signage will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing an external configuration of a digital signage 10 according to the present embodiment. A replaceable signage board SB is erected on the upper front end side of the apparatus housing 10A. This signage board SB has a translucent plate-like configuration having an arbitrary shape, which is installed so as to be within the originally rectangular projectable area of the digital signage 10.

  A plurality of, here four, operation buttons B1 to B4 are projected together on the lower part of this signage board SB, and when the viewer touches any of the buttons, they are arranged on the board mounting base. The operation position can be detected by a linear infrared sensor array each having directivity. One of the operation buttons B1 to B4 includes an operation button for starting visible light communication for a viewer who browses the signage board SB (for example, a customer who passes through the store where the digital signage 10 is installed). .

FIG. 2 is a view of the configuration of the projection optical system provided on the upper part of the apparatus housing 10A of the digital signage 10 as viewed from the right side.
The projected light beam emitted obliquely upward and rearward from the projection lens barrel 11 is reflected to the front side by the total reflection mirror 12 and then deflected to a horizontal parallel light beam by the Fresnel lens sheet 13 to form a translucent curtain shape. Projected on the rear project screen 14.

  A transparent board 15 is integrally formed on the front side of the rear project screen 14. The three layers of the Fresnel lens sheet 13, the rear project screen 14, and the transparent board 15 constitute the signage board SB.

  As shown in FIG. 1, the signage board SB has an indefinite shape such as a human figure, while a display element for forming a light image emitted from the projection lens barrel 11, for example, DLP (Digital Light Processing) ( In the case of a registered trademark projector, the micromirror element has a rectangular display area. For this reason, it is necessary to accurately recognize the shape of the signage board SB in order to suppress emission of unnecessary projection light to an area outside the signage board SB.

  In the present embodiment, information indicating which signage board SB corresponds to which of a plurality of shape types registered in advance is stored together in a storage medium that stores image data to be projected. It is assumed that information on the shape type of the signage board SB is also read together.

  FIG. 3 shows a state in which the CPU 32 described later recognizes the shape of the signage board SB within the rectangular projectable area PA and sets it as the screen projection area SA. In addition, in the present embodiment, a position near the screen projection area SA in the projectable area PA, for example, a small rectangular area at the upper left (toward the signage board SB) is set as the communication projection area TA. . The position of the communication projection area TA is also stored in association with the image data and the shape type information of the signage board SB, and the CPU 32 can read the position to set the position.

  Next, the functional configuration of the electronic circuit of the digital signage 10 will be mainly described with reference to FIG. In the figure, image data is read from a memory card (not shown) attached to the memory card attachment unit IP and sent to the projection image drive unit 21 via the system bus B.

  FIG. 5 is a diagram showing a plurality of projection images stored in the memory card attached to the memory card attachment unit IP and their relations. As shown in the figure, a plurality of promotional image data are stored in the memory card. For each image data, data content transmitted in the communication projection area TA and information indicating the shape type of the signage board SB , And the position information of the communication projection area TA are stored in association with each other.

  The projection image drive unit 21 multiplies a frame rate according to a predetermined format, for example, 120 [frames / second], the number of color component divisions, and the number of display gradations, according to the transmitted image data. The micromirror element 22 as a display element is driven to display by faster time-division driving.

  The micromirror element 22 performs display operation by individually turning on / off each tilt angle of a plurality of micromirrors arranged in an array, for example, WXGA (horizontal 1280 pixels × vertical 768 pixels) at high speed. Thus, an optical image is formed by the reflected light.

  On the other hand, primary color lights of R, G, and B are emitted from the light source unit 23 in a time-sharing manner. The light source unit 23 includes an LED which is a semiconductor light emitting element, and repeatedly emits R, G, and B primary color lights in a time-sharing manner. The LED included in the light source unit 23 may include an LD (semiconductor laser) or an organic EL element as an LED in a broad sense.

  Moreover, it is good also as what uses the primary color light from which a wavelength differs from the original light excited by irradiating the light radiate | emitted from LED to a fluorescent substance. The primary color light from the light source unit 23 is totally reflected by the mirror 24 and applied to the micromirror element 22.

  Then, an optical image is formed by the reflected light from the micromirror element 22, and the formed optical image is projected to the outside through the projection lens unit 25. The projection lens barrel 11 includes the projection lens unit 25 as a main element.

  The projection lens unit 25 includes a focus lens for moving the focus position in the internal lens optical system, and the lens is aligned by the lens motor (M) 26 along the optical axis direction via a gear mechanism (not shown). The position is selectively driven.

  The CPU 32 controls all the operations of the above circuits. The CPU 32 is directly connected to the main memory 33 and the program memory 34. The main memory 33 is composed of, for example, an SRAM and functions as a work memory for the CPU 32. The program memory 34 is composed of an electrically rewritable nonvolatile memory such as a flash ROM, and stores an operation program executed by the CPU 32, various fixed data, and the like.

  The CPU 32 performs overall control of the digital signage 10 by reading out the operation program, fixed data, and the like stored in the program memory 34, developing and storing them in the main memory 33, and executing the program. To do.

  The CPU 32 executes various projection operations in accordance with operation signals from the operation unit 35. The operation unit 35 detects a key operation signal of several operation keys including a power key provided in the main body of the digital signage 10 or an operation to a button virtually projected on a part of the signage board SB. A detection signal from the infrared sensor array is received, and a signal corresponding to the received operation is sent to the CPU 32.

The CPU 32 is further connected to the audio processing unit 36 via the system bus B.
The sound processing unit 36 includes a sound source circuit such as a PCM sound source, converts the sound signal given during the projection operation into an analog signal, drives the speaker unit 37 to emit sound, or generates a beep sound or the like as necessary.

Next, the operation of the above embodiment will be described.
The operation shown below is executed after the CPU 32 develops the operation program read from the program memory 34 in the main memory 33 as described above. The operation program and the like stored in the program memory 34 are not only those stored in the program memory 34 at the time of shipment of the digital signage 10, but also install a version upgrade program after the user purchases the digital signage 10. Including the contents.

  FIG. 6 is a flowchart showing the processing contents of the projection operation with visible light communication, which is executed by the CPU 32 when the digital signage 10 is actually used by installing it at a store, for example. The user of the digital signage 10 at the beginning of the process accepts selection of advertising image data stored in the memory card attached to the memory card attachment part IP (step S101).

  With this selection operation, a position for performing visible light communication is determined based on the position of the communication projection area TA stored in association with the selection operation (step S102).

  In accordance with this determination, the CPU 32 guides the visible light communication to the position closest to the position determined to perform the visible light communication in the image selected in step S01, for example, an arrow and character guide message. Image data superimposed with “Click here for benefits of visible light communication” is created (step S103).

  Then, the CPU 32 executes a normal projection operation on the signage board SB using the image data created in step S103 (step S104). Then, the CPU 32 determines whether or not there is an operation on the button assigned to the start of the visible light communication in the operation buttons B1 to B4 of the signage board SB, for example, when the communication object of the visible light communication appears. Depending on whether or not (Step S105)

  If there is an operation on the button assigned to start the visible light communication, the CPU 32 determines the operation in step S105, and the visible light communication stored in association with the image data set at that time. Content information is read out by the memory card mounting unit IP and data transmission in the communication projection area TA determined in step S102 is started in accordance with the normal projection operation on the signage board SB (step S106). .

  In addition, the CPU 32 accepts an operation to the button assigned to start the visible light communication so as to function as a button for operating the end of communication this time.

  At this time, details of information transmitted in the area corresponding to the communication projection area TA of the micromirror element 22 are described in, for example, Japanese Patent Application Laid-Open No. 2003-179556, and the description thereof is omitted.

  Therefore, the viewer simply holds the camera unit such as a smartphone in which an application program corresponding to visible light communication is installed in advance to the position corresponding to the communication projection area TA as displayed in the guide, and Content information for optical communication can be easily received.

  Thereafter, the CPU 32 repeatedly determines whether or not there is no communication object for visible light communication depending on whether or not there is an operation on the button assigned to the end of the visible light communication, and the visible light communication end timing is reached. (Step S107).

  At the time when there is an operation on the button assigned to the end of the visible light communication, the CPU 32 determines that there is no communication object for visible light communication, and ends the data transmission in the communication projection area TA (step S108). ).

  Thereafter, the CPU 32 determines whether or not an operation for ending the projection on the digital signage 10 has been performed based on whether or not the power key is operated on the operation unit 35 (step S109). If it is determined in step S109 that the operation for ending the projection has not been performed, the CPU 32 returns to the processing from step S104 and continues the normal projection operation.

  If it is determined in step S109 that the operation for ending the projection has been performed with the power key, the CPU 32 ends the projection operation in FIG.

  As described above in detail, according to the present embodiment, when an image is projected using the amorphous signage board SB as a screen, a display area that is not originally used for projection is effectively used, and various content information is transmitted via visible light communication. Thus, it is possible to further improve the appeal as an electronic signboard.

  Further, the position where the visible light communication is performed has been described as the guide display superimposed on the image projected on the signage board SB. However, by projecting such a guide image together, the viewer can more easily see the position. It becomes easier to receive provision of services by optical communication.

(Second Embodiment)
Hereinafter, a second embodiment when the present invention is applied to a rear projection type digital signage will be described in detail with reference to the drawings.
Note that the appearance of the digital signage 10 'according to the present embodiment is basically the same as that shown in FIG. 1, and the configuration of the projection optical system of the digital signage 10' is basically the same as that shown in FIG. Are the same, the same reference numerals are used for the same parts, and illustration and description thereof are omitted.

  Next, the functional configuration of the electronic circuit of the digital signage 10 'will be described with reference to FIG. In the figure, portions having the same functions as those in FIG. 4 are denoted by the same reference numerals and description thereof is omitted.

  Further, an imaging unit IM is provided in the vicinity of the projection lens unit 25 to capture an image of the projectable region. The imaging unit IM includes a photographic lens unit 27 facing in the same direction as the projection lens unit 25 and a CMOS image sensor 28 that is a solid-state imaging device disposed at a focal position of the photographic lens unit 27.

  An image signal obtained by the CMOS image sensor 28 is digitized by the A / D converter 29 and then sent to the captured image processing unit 30.

  The photographed image processing unit 30 scans and drives the CMOS image sensor 28 to execute a photographing operation, and performs image processing such as pattern matching on image data obtained by photographing. The shape of the signage board SB to be projected by the unit 25, or recognition of a communication device such as a smartphone that is a target of the visible light communication can be executed.

  Further, the photographed image processing unit 30 drives a lens motor (M) 31 for moving a focus lens position that constitutes a part of the photographing lens unit 27. The photographed image processing unit 30 drives the lens motor 31 by, for example, a contrast-type automatic focusing function to move the focus lens of the photographing lens unit 27 along the optical axis direction, and sets the focus distance of the image with the highest contrast. By obtaining, it is possible to acquire the distance to the device that is the target of visible light communication.

  The memory card attached to the memory card attachment unit IP stores a plurality of promotional image data, and each image data is stored in association with the data content transmitted in the communication projection area TA. Has been. Both the information indicating the shape type of the signage board SB and the position information of the communication projection area TA shown in FIG. 5 are unnecessary.

Next, the operation of the above embodiment will be described.
The operation shown below is executed after the CPU 32 develops the operation program read from the program memory 34 in the main memory 33 as described above. The operation program and the like stored in the program memory 34 are not only those stored in the program memory 34 at the time of shipment of the digital signage 10, but also install a version upgrade program after the user purchases the digital signage 10. Including the contents.

  FIG. 8 is a flowchart showing the processing contents of the projection operation with visible light communication, which is executed by the CPU 32 when the digital signage 10 ′ is actually used by being installed at a store, for example. At the beginning of the process, the user on the side where the digital signage 10 'is installed receives selection of advertisement image data stored in the memory card attached to the memory card attachment unit IP (step S201).

In combination with this selection operation, a guide image indicating that an information providing service using visible light communication is performed as necessary, for example, a character guide message
"If you want to use visible light communication, hold your smartphone's camera around the panel."
Image data superimposed on an arbitrary position of the selected image is created (step S202).

  Thereafter, the CPU 32 temporarily displays the test image data read from the program memory 34 on the micromirror element 22 and projects the test image on the signage board SB (step S203), and then the imaging unit IM. Thus, the projection image range including the signage board SB is photographed, and a pattern of the test image is extracted from the photographed image, thereby recognizing the shape of the signage board SB in the projection area at that time (step S204).

  Further, the CPU 32 executes a normal projection operation on the signage board SB using the image data created in step S202 (step S205).

  Then, the CPU 32 starts a shooting operation at the imaging unit IM (step S206). The CPU 32 waits for the recognition of the shape of the image around the signage board SB until the viewer's smartphone or the like, which becomes a communication object of visible light communication, appears in the captured image (step S207).

  When the shape of the device subject to the visible light communication is recognized, the CPU 32 determines the appearance of the step S207, and the visible light communication stored in association with the image data set at that time is stored. The content information is read out by the memory card mounting unit IP, and data transmission is started at the position where the communication target is recognized in accordance with the normal projection operation on the signage board SB (step S208).

  At this time, the details of the information transmitted at the position where the micromirror element 22 recognizes that the target device is present are described in, for example, Japanese Patent Application Laid-Open No. 2003-179556, and the description thereof is omitted.

  Accordingly, the viewer can easily access the content information for visible light communication by simply holding the camera unit such as a smartphone in which an application program corresponding to visible light communication is installed in advance to an arbitrary position around the signage board SB. Can be received.

  Thereafter, the CPU 32 continues to recognize the shape of the device to be communicated in the projection area outside the signage board SB, repeatedly determines that there is no communication object for visible light communication, and determines the end timing of visible light communication. It waits to become (step S209).

  When the device to be communicated cannot be recognized from the photographed image, the CPU 32 determines that the communication object for visible light communication has disappeared, and terminates the data transmission in the communication projection area TA (step S210).

  Thereafter, the CPU 32 determines whether or not an operation for terminating the projection itself on the digital signage 10 'has been performed based on whether or not the power key is operated on the operation unit 35 (step S211). If it is determined in step S211 that the operation for ending the projection has not been performed, the CPU 32 returns to the process from step S205 and continues the normal projection operation.

  If it is determined in step S211 that the operation for ending the projection has been performed with the power key, the CPU 32 ends the projection operation in FIG.

  As described above in detail, according to the present embodiment, when an image is projected using the amorphous signage board SB as a screen, a display area that is not originally used for projection is effectively used, and various content information is transmitted via visible light communication. Thus, it is possible to further improve the appeal as an electronic signboard.

  In this respect, in particular, the imaging unit IM is provided so that the position of the device to be communicated can be communicated anywhere around the signage board SB in the projection area, thereby providing a high degree of freedom on the viewer side and more easily. Can realize an environment that can cooperate with the provision of information services.

  In the above embodiment, the data is unilaterally transmitted from the digital signage 10, 10 ', and it is described that the provided information is received by a device that is a communication target such as a smartphone that the viewer has, In general, for example, in the case of a smartphone, since there is an LED for photographing target illumination in the vicinity of the camera unit, data transmission by visible light communication from the communication target side can be executed by the LED. Accordingly, it is possible to realize a bidirectional communication environment and collect information within a range that can be used as information on the viewer side, for example, personal information.

  In addition, although the said embodiment demonstrated the case where it applied to the digital signage by the DLP (trademark) type rear projection, this invention is not limited to this, The projection direction of the display element which forms an optical image, front / rear, It is not intended to limit the use of the apparatus as a moving image and still image to be handled.

  In addition, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention in the implementation stage. Further, the functions executed in the above-described embodiments may be combined as appropriate as possible. The above-described embodiment includes various stages, and various inventions can be extracted by an appropriate combination of a plurality of disclosed constituent elements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, if the effect is obtained, a configuration from which the constituent requirements are deleted can be extracted as an invention.

Hereinafter, the invention described in the scope of claims of the present application will be appended.
According to a first aspect of the present invention, there is provided projection means for projecting an image, shape acquisition means for acquiring a shape of a screen for projecting an image by the projection means, and projection according to the shape of the screen acquired by the shape acquisition means. A first projection control unit that projects a first image using a part of a projectable region by the unit, a determination unit that determines whether there is a transmission target in the region outside the screen, and the determination unit And a second projection control unit that causes the projection unit to perform data transmission by visible light on a transmission target in an area outside the screen according to the determination result.

  According to a second aspect of the invention, in the first aspect of the invention, the first projection control means causes the guide image for designating the position of the transmission target to be superimposed and projected on the first image. Features.

  According to a third aspect of the present invention, in the first aspect of the present invention, the image processing apparatus further includes photographing means for photographing a projection range by the projecting means, and the determination means uses the screen of the projection range obtained by the photographing means. The presence / absence of a communication target in an outer region and the position when there is a transmission target are determined, and the second projection control unit performs visible light using the projection unit according to the position of the transmission target determined by the determination unit. According to the present invention, the data transmission is executed.

  Invention of Claim 4 is a projection control method in the apparatus provided with the projection part which projects an image, Comprising: The shape acquisition process which acquires the shape of the screen which projects the image by the said projection part, The said shape acquisition process The first projection control step of projecting the first image using a part of the projectable area by the projection unit according to the shape of the screen acquired in step 1, and whether there is a projection target in the area outside the screen And a second projection control step for causing the projection unit to perform data transmission by visible light on a transmission target in an area outside the screen according to a determination result in the determination step. It is characterized by that.

  According to a fifth aspect of the present invention, there is provided a program executed by a computer built in an apparatus having a projection unit that projects an image, wherein the computer acquires a shape of a screen on which an image is projected by the projection unit. Means, a first projection control means for projecting a first image using a part of a projectable area by the projection unit according to the shape of the screen acquired by the shape acquisition means, and a projection target on the area outside the screen And a second projection that causes the projection unit to perform data transmission with visible light on a transmission target in an area outside the screen according to a determination result of the determination unit. It functions as a control means.

  DESCRIPTION OF SYMBOLS 10,10 '... Digital signage, 10A ... Apparatus housing, 11 ... Projection lens barrel, 12 ... Total reflection mirror, 13 ... Fresnel lens sheet, 14 ... Rear project screen, 15 ... Transparent board, 21 ... Projection image drive part 22 ... micromirror element, 23 ... light source, 24 ... mirror, 25 ... projection lens, 26 ... lens motor (M), 27 ... photographing lens, 28 ... CMOS image sensor, 29 ... A / D converter, DESCRIPTION OF SYMBOLS 30 ... Shooting image processing part, 31 ... Lens motor (M), 32 ... CPU, 33 ... Main memory, 34 ... Program memory, 35 ... Operation part, 36 ... Sound processing part, 37 ... Speaker part, B ... System bus, IM: Imaging unit, IP: Memory card mounting unit, PA ... Projectable area, SA ... Screen projection area, SB ... Signage board, TA ... Communication projection Pass.

Claims (8)

Projection means for projecting an image;
Shape acquisition means for acquiring the shape of a screen for projecting an image by the projection means;
First projection control means for projecting a first image using a part of a projectable area by the projection means according to the shape of the screen acquired by the shape acquisition means;
Determining means for determining whether or not there is a communication target in an area outside the screen within the projectable area ;
Projection comprising: second projection control means for causing the projection means to execute data transmission by visible light to a communication object in an area outside the screen according to a judgment result by the judgment means. apparatus.   The projection apparatus according to claim 1, wherein the first projection control unit projects a guide image designating a position of the communication target on the first image. Further comprising an imaging means for imaging the projection range by the projection means,
The determination means determines the presence / absence of a communication target in the area outside the screen and the position when there is a communication target from the image of the projection range obtained by the photographing means,
The projection apparatus according to claim 1, wherein the second projection control unit causes the projection unit to perform data transmission by visible light according to the position of the communication target determined by the determination unit. A projection control method in an apparatus including a projection unit that projects an image,
A shape acquisition step of acquiring a shape of a screen for projecting an image by the projection unit;
A first projection control step of projecting a first image using a part of a projectable region by the projection unit according to the shape of the screen acquired in the shape acquisition step;
A determination step of determining whether there is a communication target in an area outside the screen within the projectable area ;
A second projection control step of causing the projection unit to perform data transmission by visible light on a communication target in an area outside the screen according to a determination result in the determination step. Control method. A program executed by a computer built in an apparatus having a projection unit for projecting an image, the computer being
Shape acquisition means for acquiring a shape of a screen for projecting an image by the projection unit;
First projection control means for projecting a first image using a part of a projectable area by the projection unit according to the shape of the screen acquired by the shape acquisition means;
A determination unit that determines whether or not there is a communication target in an area outside the screen within the projectable region , and the projection unit for the communication target in the area outside the screen according to a determination result by the determination unit To function as second projection control means for executing data transmission by visible light. Projection means for projecting an image;
Shape acquisition means for acquiring the shape of a screen for projecting an image by the projection means;
First projection control means for projecting a first image using a part of a projectable area by the projection means according to the shape of the screen acquired by the shape acquisition means;
Second projection control means for executing data transmission by visible light by the projection means in an area outside the screen within the projectable area;
A projection apparatus comprising: A projection control method in an apparatus including a projection unit that projects an image,
A shape acquisition step of acquiring a shape of a screen for projecting an image by the projection unit;
A first projection control step of projecting a first image using a part of a projectable region by the projection unit according to the shape of the screen acquired in the shape acquisition step;
A second projection control step of executing data transmission by visible light by the projection unit in an area outside the screen within the projectable area;
A projection control method characterized by comprising: A program executed by a computer built in an apparatus having a projection unit for projecting an image, the computer being
Shape acquisition means for acquiring a shape of a screen for projecting an image by the projection unit;
First projection control means for projecting a first image using a part of a projectable area by the projection unit according to the shape of the screen acquired by the shape acquisition means; and
Second projection control means for executing data transmission by visible light by the projection unit in an area outside the screen in the projectable area
A program characterized by functioning as

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