Video Display System

Abstract

To adjust the illuminance of a background in display according to appropriate timing.SOLUTION: A light control screen body includes a light control screen unit having plural light control screens, a motor that rotates the light control screen unit and allows a predetermined light control screen to display video, a signal processing unit that controls the motor on the basis of a light control screen control signal sent from a video content controller, and a frame in which the light control screen unit, motor, and signal processing unit are disposed. The video content controller acquires the illuminance of the outside of a moving body from illuminance data sent from an external light sensor, calculates an external light transmittance of desired external light on the basis of the illuminance, selects the light control screen corresponding to the calculated external light transmittance, and transmits a light control screen control signal, which includes information on the selected light control screen, to the light control screen body.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a video display system. [Background technology]

[0002] Buses and other vehicles are equipped with windows. While the vehicle is moving, passengers other than the driver can enjoy the outside scenery through the windows. Meanwhile, a technology called Augmented Reality (AR) is known that adds relevant information to the outside scenery by overlaying images onto the outside scenery while maintaining the original function of the window.

[0003] For example, when a transparent image display device that allows the background to be seen is used, the image content displayed on the image display device can be superimposed on the outside scenery, providing passengers with a new window effect using augmented reality. Also, when a projector is used instead of the image display device, the image content can be superimposed on the outside scenery by projecting the image content from the projector onto the window.

[0004] Patent document 1 describes that an augmented reality experience is provided by making it possible to view the scenery of a real environment using a transparent display, and by displaying information related to features present in the viewed scenery on the transparent display so as to be superimposed on the scenery based on the geographical location information of the features. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-068481 Summary of the Invention [Problem to be solved by the invention]

[0006] When a transparent image display device is used, the outside scenery reflected in the window can be seen directly. However, if the illuminance of the external light is stronger than the brightness of the image display device, the image displayed on the image display device may be darker than the outside scenery and may not be visible.

[0007] In addition, video content must be created to suit the characteristics of the video display device or projector. Specifically, white parts are transparent on a transparent LCD display, black parts are transparent on a transparent organic EL (Electro Luminescence) display, and the entire display is transparent on a projector. Furthermore, creating video content to suit the characteristics of each device can make it susceptible to the effects of external light.

[0008] These issues can be resolved by blocking external light using light-blocking film or light-blocking glass, etc. However, this method takes a certain amount of time to block external light, making it difficult to adjust the background illuminance at the appropriate time.

[0009] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a video display system equipped with a light-adjusting screen device that is capable of adjusting the illuminance of the background of the display at appropriate timing. [Means for solving the problem]

[0010] A video display system according to a representative embodiment of the present invention includes a display, a speaker, a light-adjusting screen device installed behind the display, and a video content control device that controls the display, the speaker, and the light-adjusting screen device. The light-adjusting screen device includes a light-adjusting screen main body and an external light sensor. The light-adjusting screen main body includes a light-adjusting screen unit having multiple light-adjusting screens, a motor that rotates the light-adjusting screen unit to display a predetermined light-adjusting screen, a signal processing unit that controls the motor based on a light-adjusting screen control signal transmitted from the video content control device, and a frame on which the light-adjusting screen unit, motor, and signal processing unit are mounted. The video content control device acquires the illuminance outside the mobile object from illuminance data transmitted from the external light sensor, calculates the external light transmittance of the desired external light based on the illuminance, selects a light-adjusting screen corresponding to the calculated external light transmittance, and transmits a light-adjusting screen control signal including information about the selected light-adjusting screen to the light-adjusting screen main body. The signal processing unit controls the motor based on the light-adjusting screen control signal. [Effects of the Invention]

[0011] According to the present invention, it is possible to adjust the illuminance of the background of the display at an appropriate timing. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a diagram illustrating an example of an overview of a video display system according to a first embodiment of the present invention. [Figure 2] FIG. 1 is a diagram illustrating an example of the configuration of a video content control device. [Figure 3] FIG. 2 is a diagram illustrating the configuration of a light control screen main body. [Figure 4] 10A and 10B are diagrams illustrating a method for installing the light control screen body and the display. [Figure 5] 3 is a flowchart illustrating a method for adjusting external light transmittance according to the first embodiment of the present invention. [Figure 6] FIG. 1 is a diagram illustrating an example of the configuration of a video display system. [Figure 7] FIG. 1 is a diagram illustrating an example of the configuration of a video display system. [Figure 8] 6 is a flow chart illustrating a method for adjusting external light transmittance according to a second embodiment of the present invention. [Figure 9] 10 is a flowchart illustrating a method for adjusting external light transmittance according to a third embodiment of the present invention. [Figure 10] FIG. 10 is a diagram illustrating an example of an overview of a video display system according to a fifth embodiment of the present invention. [Figure 11] FIG. 1 is a diagram showing the configuration of a display for realizing the display function. [Figure 12] FIG. 10 is a diagram conceptually illustrating a first control. [Figure 13] FIG. 10 is a diagram conceptually illustrating a second control. [Figure 14] FIG. 10 is a schematic configuration diagram of a virtual person dialogue system according to a sixth embodiment of the present invention. [Figure 15] FIG. 10 is a functional block diagram of a virtual person dialogue system according to a sixth embodiment of the present invention. [Figure 16] FIG. 10 is a sequence diagram illustrating a process in which the virtual person dialogue system determines a video model to be used for generating a virtual person. [Figure 17] FIG. 10 is a sequence diagram illustrating the steps by which the virtual character dialogue system generates the voice of a virtual character. [Figure 18] FIG. 10 is a sequence diagram illustrating the process by which the virtual character dialogue system determines a personality model of a virtual character. [Figure 19] FIG. 2 is a sequence diagram illustrating a process in which a user interacts with a virtual character using the virtual character interaction system. DETAILED DESCRIPTION OF THE INVENTION

[0013] (Embodiment 1) Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all drawings for explaining the embodiments, the same components are generally designated by the same reference numerals, and repeated description thereof will be omitted as appropriate.

[0014] ●Outline of the video display system 1 is a diagram illustrating an example of an outline of a video display system according to a first embodiment of the present invention. The video display system 1 is installed in a moving vehicle (MOV) such as a bus, and is a device that provides passengers with augmented reality by superimposing video content on an external view.

[0015] 1, the video display system 1 includes a video content control device 10, a dimming screen main body 50 (for example, 50_1 to 50_12), displays DIS (for example, DIS_1 to DIS_12), speakers SP (SP_1 to SP_12), cameras CAM (for example, CAM_1 to CAM_12), a lighting control device 30, lights LIG (for example, LIG_1 to LIG12), an ambient light sensor SEN, etc. The video display system 1 may also include various sensors (not shown), such as a GPS (Global Positioning System) sensor that detects the position of a moving object MOV and a speed sensor that detects the speed of the moving object MOV.

[0016] A light-adjustable screen main body 50, a display DIS, a speaker SP, a camera CAM, and a light LIG are provided for each seat SEAT. The light-adjustable screen main body 50 and the display DIS are installed near the window of the seat. Specifically, they are installed in this order from the window toward the inside. In other words, when viewed from a passenger seated in the seat SEAT, the light-adjustable screen main body 50 is installed behind the display DIS.

[0017] Seat SEAT_1 is provided with a light-controlling screen main body 50_1, a display DIS_1, a speaker SP_1, a camera CAM_1, and a light LIG_1, and seat SEAT_2 is provided with a light-controlling screen main body 50_2, a display DIS_2, a speaker SP_2, a camera CAM_2, and a light LIG_1. Similarly, seats SEAT_3 to SEAT_12 are provided with light-controlling screen main bodies 50_3 to 50_12, displays DIS_3 to DIS_12, speakers SP_3 to SP_12, cameras CAM_3 to CAM_12, ​​and lights LIG_3 to LIG_12, respectively. Note that seats SEAT may be for one person or may be usable by two or more people.

[0018] The light control screen main body 50 may be provided across two adjacent seats SEAT. In this case, for example, one light control screen main body 50 is shared by seats SEAT_1 and SEAT_2. One light control screen main body 50 is shared by seats SEAT_3 and SEAT_4. One light control screen main body 50 is shared by seats SEAT_5 and SEAT_6. One light control screen main body 50 is shared by seats SEAT_7 and SEAT_8. One light control screen main body 50 is shared by seats SEAT_9 and SEAT_10. One light control screen main body 50 is shared by seats SEAT_11 and SEAT_12.

[0019] The display DIS is, for example, a transmissive organic EL display device or a liquid crystal display device. The display DIS displays video content based on a video signal transmitted from the video content control device 10, and superimposes the video content on the background external scenery. Specifically, the video content includes images such as CG (Computer Graphics), and augmented reality (AR) is realized by superimposing images such as CG, which is a virtual world, on the external scenery, which is the real world.

[0020] The dimming screen main body 50 is installed between a window and the display DIS to adjust the transmittance of external light. The dimming screen main body 50 includes a plurality of dimming screens with different transmittances, and adjusts the transmittance of external light by switching the dimming screens placed behind the display DIS based on a dimming screen control signal transmitted from the video content control device 10. This adjusts the illuminance of the background of the display DIS, making it possible to balance the brightness of the background and the video content. The configuration of the dimming screen main body 50 will be described in detail later.

[0021] The speaker SP outputs audio corresponding to the video content displayed on the display DIS based on an acoustic signal transmitted from the video content control device 10. The camera CAM captures an image of the external scenery visible from the corresponding seat SEAT (the scenery outside the moving body MOV) and transmits the captured image data to the video content control device 10.

[0022] The external light sensor SEN is a sensor that detects the illuminance outside the moving body MOV. Only one external light sensor SEN may be provided, or multiple external light sensors SEN may be provided. In the case of a single external light sensor SEN, the external light sensor SEN is installed at the front of the moving body MOV (for example, near the windshield) so as to detect the illuminance ahead. In the case of multiple external light sensors SEN, the external light sensors SEN are installed on the right and left sides of the moving body MOV so as to detect the illuminance on the right and left sides, respectively, in the direction of travel of the moving body MOV. Specifically, the external light sensor SEN may be installed on the light control screen main body 50 or on the window of the seat SEAT. The external light sensor SEN detects illuminance indicating the external illuminance and transmits the detected illuminance as illuminance data to the video content control device 10.

[0023] ●Video content control device The video content control device 10 generates a video signal of the video content to be supplied to the display DIS, an audio signal of the video content to be supplied to the speaker SP, and a dimming screen control signal to be supplied to the dimming screen main body 50. In this case, the video content control device 10 analyzes the video content for a predetermined time (predetermined frames) so that the dimming screen control signal can be sent to the dimming screen main body 50.

[0024] Fig. 2 is a diagram illustrating the configuration of a video content control device. Note that the configuration shown in Fig. 2 is merely an example, and the video content control device 10 may be configured by appropriately combining a plurality of devices.

[0025] 2, the video content control device 10 is an information processing device including a processor 11, a main memory 13, a storage 15, a communication interface 17, and a monitor 19. The communication interface 17 is a communication device that transmits and receives various information and signals between the light-adjusting screen main body 50, the display DIS, the speaker SP, the camera CAM, and the external light sensor SEN.

[0026] The storage 15 includes various storage areas, such as a program storage area 15a, a video content storage area 15b, and a dimming screen setting information storage area 15c. The program storage area 15a stores a basic program for operating the video content control device 10, and various programs for realizing the functions of the video content control device 10 and the video display system 1. In this way, the storage 15 functions as a program recording medium. The program storage area 15a also stores parameters for each program.

[0027] The video content storage area 15b stores video content for augmented reality. The video content includes video data to be displayed on the display DIS and audio data corresponding to the video data. For example, the video content includes video data and audio data for adding dramatic effects to landmarks, tourist attractions, or scenery along the travel route of the moving object MOV. The video content storage area 15b may also store video of scenery along the travel route of the moving object MOV that has been captured in advance.

[0028] The dimming screen setting information storage area 15c stores dimming screen setting information for adjusting the transmittance of external light behind the display DIS. The dimming screen setting information includes, for example, the transmittance of external light, information identifying the corresponding dimming screen, and position information of the corresponding dimming screen on the dimming screen body 50. Furthermore, in order to accommodate a dimming screen having multiple regions with different transmittances or a screen including a special pattern, information identifying the corresponding video content may be included in the dimming screen setting information. Furthermore, the dimming screen setting information storage area 15c may store a table listing these various pieces of information as the dimming screen setting information.

[0029] The main memory 13 stores programs, parameters, etc. read from the program storage area 15a. The main memory 13 also temporarily stores data received via the communication interface 17, data to be transmitted via the communication interface 17, etc.

[0030] The processor 11 reads and executes programs stored in the main memory 13 to implement, in software, a processing unit such as a functional block that drives each component of the video content control device 10 and a functional block required in the video display system 1. Note that some functions may be implemented in hardware. In this case, the functional block (processing unit) is implemented by a combination of software and hardware.

[0031] Lighting equipment The video display system 1 may be provided with a lighting effect device that performs lighting effects. The lighting effect device is composed of the light LIG and lighting control device 30 of FIG. 1. The light LIG has a light-emitting unit including, for example, an LED (Light Emitting Diode) or the like, and the light-emitting unit emits light based on an illumination signal transmitted from the lighting control device 30 to provide light for effects. The light-emitting unit may emit only one color of light, or may be configured to emit light of multiple colors. Configuring the light-emitting unit to emit light of multiple colors can enhance the lighting effect.

[0032] Each light source can be individually configured to emit light for a particular effect, or multiple light sources can work together to emit light for a particular effect. By using multiple light sources in conjunction with each other, the variety of effects can be increased.

[0033] The light LIG may also be configured to change its position based on a lighting signal. This allows the lighting direction of the light to be changed, further enhancing the lighting effect. Note that, although FIG. 1 shows an example in which a light LIG is provided for each seat, the present invention is not limited to this case.

[0034] The lighting control device 30 generates lighting signals to be supplied to the lights LIG and controls the operation of the lights LIG. Specifically, the lighting control device 30 generates lighting signals to illuminate the lights LIG with light for effects corresponding to the external scenery. The lighting control device 30 also cooperates with the video content control device 10 described above to generate lighting signals to illuminate the lights LIG with light for effects corresponding to the video content. In this case, the lighting control device 30 may generate the lighting signals based on instructions from the video content control device 10, or may generate the lighting signals by referring to at least one of a video signal of the video content, an audio signal of the video content, and a dimming screen control signal. The lighting control device 30 may be configured integrally with the video content control device 10.

[0035] ●Dimming screen body Fig. 3 is a diagram illustrating the configuration of a dimming screen main body. Fig. 3(a) is a front view of the dimming screen main body 50, Fig. 3(b) is a left side view of the dimming screen main body 50, and Fig. 3(c) is a right side view of the dimming screen main body 50. As shown in each diagram in Fig. 3, the dimming screen main body 50 includes a frame 51, an upper winding section (first winding section) 52, an upper motor (first motor) 52a, a lower winding section (second winding section) 53, a lower motor (second motor) 53a, a lower motor (third motor) 53b, a motor synchronization belt (first motor synchronization belt) 54a, a motor synchronization belt (second motor synchronization belt) 54b, a dimming screen unit 55, a communication interface 56, a signal processing section 57, etc.

[0036] The frame 51 accommodates the above-mentioned upper winding unit 52, upper motor 52a, lower winding unit 53, lower motors 53a and 53b, motor synchronization belts 54a and 54b, light control screen unit 55, communication interface 56, and signal processing unit 57. A protection panel (not shown) may be provided on the frame 51 on the display DIS side.

[0037] As shown in Fig. 3(b), the upper winding unit 52, the upper motor 52a, the lower winding unit 53, and the lower motor 53a are configured to rotate in coordination with one another via a motor synchronization belt 54a. Also, as shown in Fig. 3(c), the lower winding unit 53 and the lower motor 53b are configured to rotate in coordination with one another via a motor synchronization belt 54b. This causes the upper winding unit 52 and the lower winding unit 53 to rotate. The light control screen unit 55 is then wound up to a predetermined position and fed out along the rotation direction.

[0038] Furthermore, when the rotation of the upper motor 52a and the lower motor 53a stops, the rotation of the upper winding unit 52 and the lower winding unit 53 also stops. In this way, by controlling the operation of the motors, a desired light-controlling screen is displayed.

[0039] By providing the motor synchronization belts 54a and 54b, the upper winding unit 52, the upper motor 52a, the lower winding unit 53, and the lower motor 53a can be rotated and stopped simultaneously, allowing the light control screen unit 55 to rotate while maintaining tension.

[0040] Furthermore, by providing the lower motor 53b and the motor synchronized belt 54b, the light control screen section 55 rotates at both ends, so that the tension of the light control screen section 55 can be made uniform.

[0041] The light control screen unit 55 includes a plurality of light control screens with different light blocking rates, colors, etc. In the same light control screen, a gradation of transmittance or color may be applied near the boundaries of multiple regions with different transmittances. The light control screen unit 55 is made of a material such as resin that has excellent heat resistance and light resistance. The light control screen unit 55 is also detachably attached to the frame 51.

[0042] The communication interface 56 is a communication device that transmits and receives various signals including a dimming screen control signal to and from the video content control device 10. The signal processing unit 57 performs various controls including control of the upper motor 52a and the lower motors 53a and 53b, and switches the dimming screen to be displayed.

[0043] The signal processing unit 57 generates a motor drive signal for displaying the specified dimming screen based on the dimming screen control signal, for example, and transmits the generated motor drive signal to the upper motor 52a and the lower motor 53a.

[0044] For example, the signal processing unit 57 adjusts the rotation speeds of the upper motor 52a and the lower motors 53a and 53b so that the light control screen unit 55 is always tensioned with a uniform tension. Specifically, the signal processing unit 57 adjusts the rotation speed of the upper motor 52a on the upper winding unit 52 side and the rotation speeds of the lower motors 53a and 53b on the lower winding unit 53 side according to the winding diameters of the upper winding unit 52 and the lower winding unit 53. The signal processing unit 57 slows down the rotation speed of the motors when the winding diameter is large and increases the rotation speed of the motors when the winding diameter is small. This makes it possible to maintain a uniform tension on the light control screen unit 55 even if the winding diameters of the upper winding unit 52 and the lower winding unit 53 change.

[0045] More specifically, for example, each motor is provided with a shaft rotation sensor (not shown) that detects shaft rotation, and the signal processing unit 57 calculates the number of rotations and rotation angle of the shaft of each motor based on the rotation detection signal transmitted from the shaft rotation sensor.The signal processing unit 57 then determines the rotation speed of each motor based on the number of rotations and rotation angle of the shaft of each motor.The signal processing unit 57 then generates motor drive signals corresponding to the determined rotation speeds and transmits the generated motor drive signals to the corresponding motors.

[0046] Alternatively, for example, each motor may be provided with a torque sensor (not shown) that detects the torque of the shaft, and the signal processing unit 57 may calculate the torque applied to the shaft of each motor based on the torque detection signal transmitted from the torque sensor.The signal processing unit 57 then determines the rotation speed of each motor based on the calculated torque applied to the shaft of each motor.The signal processing unit 57 then generates motor drive signals corresponding to the determined rotation speeds and transmits the generated motor drive signals to the corresponding motors.

[0047] Furthermore, the signal processing unit 57 gradually increases the rotation speed of the motors so as not to apply a load to the light control screen unit 55. Then, as the light control screen unit 55 approaches a predetermined position, the signal processing unit 57 controls the rotation speed of the upper motor 52a and the lower motors 53a and 53b so as to gradually decrease the rotation speed.

[0048] Then, when the light control screen unit 55 reaches a predetermined position, the signal processing unit 57 controls the rotation of each motor to relieve the tension in the light control screen unit 55. The signal processing unit 57 may, for example, slightly rotate the upper motor 52a and the lower motors 53a and 53b in opposite directions to relieve the tension in the light control screen unit 55, or may rotate only the upper motor 52a on the upper winding unit 52 side or the lower motors 53a and 53b on the lower winding unit 53 side.

[0049] Furthermore, if the light-controlling screen section 55 becomes loose due to vibrations caused by the movement of the moving body MOV, the signal processing section 57 controls the rotation of the upper motor 52a and the lower motors 53a and 53b in the direction opposite to when the tension was released, and rewinds the light-controlling screen section 55.

[0050] Furthermore, when the power is turned on, the signal processing unit 57 controls each motor to return the dimming screen unit 55 to its initial setting position and perform an initial operation to remove any looseness or slack that occurred when the power was turned off. Then, when the initial operation is completed, the signal processing unit 57 resets the position information of the dimming screen unit 55 and transmits the position information after the reset to the video content control device 10. Note that the rotation speed of each motor, the position information of each dimming screen, etc. can be updated using an information processing device such as a PC connected to the signal processing unit 57.

[0051] ●How to install the dimming screen and display Next, we will explain how to install the light control screen body and the display. Figure 4 is a diagram explaining how to install the light control screen body and the display. Figure 4 shows how the light control screen body and the display are installed on two seats adjacent to each other in the front and rear.

[0052] First, as shown in Fig. 4(a), the light control screen main body 50 is installed near the window WIN. The light control screen main body 50 may be attached directly to the frame of the moving body MOV near the window WIN, or may be attached to a support frame provided on the frame of the moving body MOV near the window WIN.

[0053] Next, the support frame 70 for the display DIS is installed on the frame 51 of the light control screen main body 50 (FIG. 4(b)). Two support frames 70 are installed for one display DIS. Since the light control screen main body 50 in FIG. 4 is shared by two seats, four support frames 70 are installed on the light control screen main body 50. Then, vibration-proof screws 71 are attached to each support frame 70 (FIG. 4(c)).

[0054] Next, the display DIS and a protective cover 75 for the display DIS are installed on the support frame 70 (FIG. 4(d)). Note that the display DIS and the protective cover 75 may be connected in advance and then installed on the support frame 70 as a unit. Then, a masking sheet 76 is attached to the protective cover 75 so as to cover the peripheral area of ​​the display unit of the display DIS (FIG. 4(e)). The protective cover 75 has an area larger than that of the display DIS and is attached so as to cover the light control screen main body 50. The masking sheet 76 has a light transmittance of 0%, and the masking sheet 76 makes it difficult to see the light control screen main body 50 (FIG. 4(f)). This allows passengers to concentrate on watching the outside scenery and the video content displayed on the display DIS without being aware of the presence of the light control screen main body 50.

[0055] How to adjust external light transmittance Next, a method for adjusting the external light transmittance will be described. Fig. 5 is a flow diagram illustrating a method for adjusting the external light transmittance according to the first embodiment of the present invention. In step S10, the illuminance of external light is detected. The external light sensor SEN detects the illuminance of external light outside the moving body MOV and transmits the illuminance data to the video content control device 10. When a plurality of external light sensors SEN are provided, the illuminance data is transmitted from each of the external light sensors SEN.

[0056] In step S20, the ambient light transmittance is calculated. The video content control device 10 acquires the ambient light illuminance from the received illuminance data. The video content control device 10 then calculates the ambient light transmittance that provides an appropriate illuminance for the background of the display DIS. The video content control device 10 then refers to the dimming screen setting information stored in the dimming screen setting information storage area 15c and selects a dimming screen that corresponds to the calculated ambient light transmittance.

[0057] In step S30, a process for displaying the selected dimming screen is performed. The video content control device 10 transmits a dimming screen control signal for displaying the selected dimming screen. The signal processing unit 57 generates a motor drive signal based on the dimming screen control signal, generates motor drive signals for the upper motor 52a and the lower motors 53a and 53b, and drives these motors. The motor drive signal includes, for example, position information of the selected dimming screen and motor rotation speed information. This causes the dimming screen unit 55 to rotate and display the selected dimming screen. Once the selected dimming screen is displayed, the signal processing unit 57 stops the motor. Through these processes, the transmittance is adjusted based on the illuminance of external light.

[0058] ●Specific composition Next, a specific configuration of this embodiment will be illustrated. Figures 6 and 7 are diagrams illustrating the configuration of a video display system. Figure 6 shows the configuration related to the transmission of video signals, and Figure 7 shows the configuration related to the transmission of audio signals and dimming screen control signals.

[0059] Video signals are supplied from the media server to each display DIS via an emulator and an HDMI (registered trademark) cable, as shown in Fig. 6. Each camera CAM is connected to a drive unit, and the captured image data is supplied to the media server via the drive unit.

[0060] As shown in Fig. 7, the audio signals are supplied from the media server to each speaker SP via a surround processor and amplifier. The dimming screen control signals are supplied from the media server to each dimming screen body 50 via a switching hub.

[0061] Main benefits of this embodiment According to this embodiment, a light-control screen can be selected based on the illuminance of external light, so that the illuminance of the background of the display can be appropriately adjusted at an appropriate timing.

[0062] Furthermore, according to this embodiment, an upper motor 52a corresponding to the upper winding section 52 and a lower motor 53a corresponding to the lower winding section 53 are provided. With this configuration, the light control screen can be smoothly wound up.

[0063] Furthermore, according to this embodiment, a motor synchronization belt 54a is provided that rotates the upper winding section 52, upper motor 52a, lower winding section 53, and lower motor 53a in coordination with one another. With this configuration, the rotation of the upper winding section 52, upper motor 52a, lower winding section 53, and lower motor 53a can be synchronized, making it possible to prevent slack in the light control screen.

[0064] Furthermore, according to this embodiment, a motor synchronization belt 54b is provided on the opposite side of the lower motor 53a, which rotates the lower winding unit 53 and the lower motor 53b in coordination with each other. With this configuration, winding can be performed on both ends of the light control screen unit, making it possible to further reduce slack in the light control screen. Also, damage to the light control screen during winding can be reduced.

[0065] Furthermore, according to this embodiment, the light control screen main body 50 is shared by two seats, thereby reducing the manufacturing cost of the light control screen main body 50. Furthermore, by sharing the light control screen main body 50 between two seats, it is possible to reduce blind spots in the outside view that result from the installation of the light control screen main body.

[0066] ●Other configurations Here, we will explain how to adjust the external light transmittance using a light control film. The light control film may be configured to be able to change the external light transmittance and color in response to a signal supplied from the video content control device 10. The light control film is installed, for example, on the display unit of the display DIS.

[0067] If the external light transmittance of the light-controlling film is increased, a dramatic effect combining the external scenery and video content can be achieved, as in the above-described embodiment. On the other hand, if the external light transmittance of the light-controlling film is decreased, the external scenery and the video content displayed on the display DIS cannot be seen. In this case, any image can be displayed on the light-controlling film using, for example, a projector. Specifically, a pre-recorded landscape image or an image combining a landscape image with video content for dramatic effect can be displayed on the light-controlling film. In addition, by changing the background color, the display color of the area where the light-controlling film is installed can be adjusted to a desired color (for example, white).

[0068] It is preferable that the scenery video be filmed in advance for each seat. In this case, it is preferable that the video be filmed so that the scenery from one seat does not overlap with the scenery from another seat. This prevents the images displayed on adjacent seats from overlapping, and prevents the occurrence of scenery disruptions due to parallax, such as the same landmark being seen twice outside the window. It is also preferable that a high-resolution camera (e.g., a camera CAM) be used for filming. This prevents a decrease in the resolution of the scenery video and eliminates any sense of incongruity when viewing the video.

[0069] Furthermore, when the light-blocking function of the dimming screen and the color-changing function of the dimming film are used simultaneously, if the dimming film in front of the display DIS is changed to white while the dimming screen blocks external light, the transmittance of external light can be reduced even when the surface is white, thereby maintaining the clarity of the video content.

[0070] By transmitting light control film control signal information from the video content control device 10 to the light control film and controlling the voltage switch of the light control film, instantaneous switching between white and transparent can be performed.

[0071] Mixed reality Up to now, the explanation has been given on the assumption that the video display system 1 provides augmented reality (AR), but the video display system 1 can also provide mixed reality (MR). Mixed reality is an advanced version of augmented reality, and combines the real world and the virtual world by projecting virtual world objects such as CG onto the real world based on, for example, images captured by a camera or sensor information (for example, location information) acquired by a sensor.

[0072] Specifically, the window WIN of the moving body MOV is used as the boundary, with the space inside the window WIN being the real world and the space outside the window WIN being the virtual world. Mixed reality is realized within the moving body MOV by projecting objects from the virtual world outside into the car. Passengers can experience mixed reality by looking at a see-through display that projects objects from the virtual world based on video and sensor information, or by wearing designated devices such as smart glasses or goggles.

[0073] (Embodiment 2) Next, a description will be given of embodiment 2. In this embodiment, a light control screen is selected in accordance with the video content.

[0074] 8 is a flow diagram illustrating a method for adjusting external light transmittance according to the second embodiment of the present invention. In step S110, the saturation of the external scenery and the illuminance of external light are detected. The external light sensor SEN detects the illuminance of external light outside the moving body MOV and transmits the illuminance data to the video content control device 10. The camera CAM captures an image of the external scenery and transmits the captured image data to the video content control device 10.

[0075] In step S120, the video content control device 10 acquires the illuminance of external light from the received illuminance data and acquires the saturation of the external scenery (scenery saturation) from the received imaging data. In step S130, the video content control device 10 acquires the brightness and saturation of the video content (video saturation) from the video data.

[0076] In step S140, a desired external light transmittance is calculated. The video content control device 10 calculates an external light transmittance that provides an appropriate illuminance for the background of the display DIS based on the saturation of the external scenery, the illuminance of external light, and the brightness and saturation of the video content. The video content control device 10 then refers to the dimming screen setting information stored in the dimming screen setting information storage area 15c and selects a dimming screen that corresponds to the calculated external light transmittance.

[0077] In step S150, a process for displaying the selected dimming screen is performed. In step S150, the video content control device 10 transmits a dimming screen control signal at the timing when the corresponding video data is played back or at a timing slightly before that. The other processes are the same as those in step S30 described above, and therefore detailed explanations are omitted.

[0078] According to this embodiment, it is possible to appropriately adjust the illuminance of the background of the display in accordance with the brightness and saturation of the video content.

[0079] (Embodiment 3) Next, a description will be given of embodiment 3. In this embodiment, a different external light transmittance is set for each area of ​​the video content.

[0080] Fig. 9 is a flow diagram illustrating a method for adjusting external light transmittance according to the third embodiment of the present invention. The flow in Fig. 9 is similar to that in Fig. 8. The difference is that step S130 is changed to step S230.

[0081] In step S230, the video content control device 10 sets multiple regions in the video content and acquires the brightness and saturation for each region. The regions are set, for example, at the top and bottom of the video content, but are not limited to this. Note that the regions do not have to cover the entire area of ​​the video content, and may be set in locations separated from each other.

[0082] The video content control device 10 calculates an external light transmittance for each region that provides an appropriate illuminance for the background of the display DIS based on the saturation of the external scenery, the illuminance of external light, and the brightness and saturation of the video content for each region.The video content control device 10 then references the dimming screen setting information stored in the dimming screen setting information storage area 15c and selects a dimming screen that corresponds to the calculated external light transmittance.In this embodiment, the external light transmittance may be calculated based only on the illuminance of each region.

[0083] For example, the sky area can be set to an external light transmittance of 100%, while the land area can be set to an external light transmittance of 0%. This allows the sky to show the actual scenery, while making it easier to display video content on the land. According to this embodiment, different external light transmittances are set for different areas, making it easier to view video content and further enhancing the dramatic effect.

[0084] (Fourth embodiment) Next, a fourth embodiment will be described. In this embodiment, the dramatic effect is enhanced by transmitting external light in a predetermined shape. Here, for example, the external light transmittance is set high so that the external scenery is displayed in a predetermined shape (for example, a star, a circle, a square, etc.), and in other areas, a light-control screen is selected with a low external light transmittance so that no scenery is displayed and only video content is displayed.

[0085] It is also possible to provide a plurality of light-controlling screens each having a different external light transmittance in the area of ​​a predetermined shape on which the external scenery is displayed, or to provide a light-controlling screen in which the external light transmittance in the area of ​​a predetermined shape is set lower than that in the other areas. According to this embodiment, it is possible to enhance the dramatic effect by using the outside scenery for dramatic effect.

[0086] (Embodiment 5) Next, a description will be given of embodiment 5. In this embodiment, information according to the current location of a moving object MOV is distributed from outside via a network.

[0087] Fig. 10 is a diagram illustrating an example of an outline of a video display system according to a fifth embodiment of the present invention. In Fig. 10, a network NET, an information distribution server 100, a management server 150, etc. are added to the configuration within the mobile object MOV of Fig. 1.

[0088] ● Information distribution server The information distribution server 100 has a function of transmitting information corresponding to the content of a distribution request input from a mobile MOV to the mobile MOV. The information distribution server 100 stores at least three types of information: a two-dimensional map representing real space (hereinafter referred to as a real space map), a two-dimensional map representing virtual space (hereinafter referred to as a virtual space map), and a three-dimensional shape in virtual space projected onto a two-dimensional surface (hereinafter referred to as a virtual space object), and these pieces of information are digital information that can be transmitted via a network NET.

[0089] Furthermore, the information distribution server 100 can record multiple real space maps 202, virtual space maps 201, and virtual space objects 510, and by storing them in a database, it is possible to select and transmit the appropriate virtual space map 201 or virtual space object 510 depending on the conditions. In this case, it is also possible to configure the information distribution server 100 not only with one information distribution server 100 but with multiple information distribution servers 100, thereby distributing the load on the information distribution server 100.

[0090] Here, virtual space refers to, for example, AR, a virtual three-dimensional space created using CG, which is projected onto a two-dimensional surface through calculations by a computer, etc., and by changing the field of view within the virtual space, it is possible to perceive as if one is existing or moving within the virtual space.

[0091] Next, the display DIS has two main functions. The first function is to receive the above-mentioned real space map 202, virtual space map 201, and virtual space object 510 via the network NET and display them as digital images on the display unit. The second function is to detect the geographical position of the display and the direction of movement of the display, and display them on the display unit.

[0092] FIG. 11 is a diagram showing the configuration of a display for realizing the display functions. The components constituting the display DIS are connected by information transmission paths. The direction of information transmission and the operation of each component when information is input are controlled by a display control program. Here, each component is a physical device and can be selected and adopted without restriction as long as it enables the purpose of each component. In addition, information transmission between each component can be either wired or wireless, and further, each component does not need to be integrated into a single device; each component can be freely provided in a separate device depending on its purpose.

[0093] The operation of the display DIS will be described. The real space map 202, the virtual space map 201, and the virtual space object 510 are received by the external information input unit 106 via the network NET, and are recorded in the real space map storage unit 401, the virtual space map storage unit 402, and the virtual space object storage unit 403, respectively, and then each is input to the determination unit 410. The designated route 203, which is information on the movement route of the moving object MOV on the virtual space map 201 input from the designated route input unit 408, is input from the designated route input unit 408 and input to the determination unit 410. In addition, the geographical position of the display is detected by the position detection unit 404, and information corresponding to this is input to the determination unit 410. Similarly, the movement direction of the display is detected by the direction detection unit 405, and information corresponding to this is input to the determination unit 410.

[0094] Here, the geographical position of the display can be detected by a position detection unit 404 included in the display, for example, by receiving a satellite positioning signal. More specifically, a method of receiving and detecting a satellite positioning signal using a CDMA or FDMA method transmitted from a Global Navigation Satellite System (hereinafter referred to as GNSS) can be adopted.

[0095] The direction of movement of the display can be detected by a direction detection unit 405 included in the display. For example, an electronic compass that can detect direction by detecting geomagnetism can be used. In this case, a three-axis electronic compass is preferable, since the accuracy of detecting the direction does not change depending on the degree of tilt of the display relative to the earth's axis. Furthermore, in order to detect the degree of tilt of the display with higher accuracy, an acceleration sensor can also be included in the direction detection unit 405 in addition to the electronic compass.

[0096] The determination unit 410 determines the position of the display on the real space map (hereinafter referred to as the current position) based on the information input from the position detection unit 404. This current position 206 is projected onto the virtual space map 201 to determine the position of the display on the virtual space map 201 (hereinafter referred to as the virtual position). Next, based on the information input from the position detection unit 404 and the direction detection unit 405, the determination unit 410 calculates the distance between the virtual position 205 and the specified path 203 and the difference between the traveling direction of the display and the traveling direction of the moving object MOV. Here, the determination unit 410 determines the results of this calculation and performs first and second controls, which will be described later, and inputs the reconstructed or corrected real space map 202, virtual space map 201, and virtual space object 510 to the calculation unit 411 as a result of these controls.

[0097] The camera CAM uses an imaging device to capture images of landscapes 509, such as urban areas, mountainous areas, river areas, or coastal areas in real space, and digitizes the images to generate landscape information. This landscape information is input to the determination unit 410. Here, the imaging device may be a video camera capable of capturing and recording dynamic images. Furthermore, the encoding method used to digitize the optical information captured by an imaging device such as a video camera may be selected and adopted without any particular restrictions.

[0098] The calculation unit 411 receives the virtual space object 510 corrected by the judgment unit 410 and the landscape information digitized by the camera CAM, and combines them by digital signal processing to generate an augmented reality landscape 511. Here, an augmented reality (AR) landscape is one that extends the real environment perceived by humans by digital signal processing, and specifically, by simultaneously displaying a landscape 509 in real space and a virtual reality object in virtual space generated by CG, it allows the user to perceive the virtual space object 510 as if it were present in the landscape 509 in real space.

[0099] The control unit 412 receives the real space map 202, the virtual space map 201, and the AR landscape generated by the calculation unit 411 via the determination unit 410 and displays them on the display unit. The control unit 412 also has a function of controlling the display unit to display one or more pieces of digital information on the display unit. During this control, for example, using the GNSS signal received by the position detection unit 404, the control unit 412 can control the display unit to display the AR landscape when the display DIS reaches a predetermined geographical position, and to display the virtual space map 201 on the display unit in other cases.

[0100] The display unit displays the real space map 202, the virtual space map 201, or the AR landscape input from the control unit 412. Here, the display unit can be any device that can receive an input video signal and display an image, and for example, a transmissive or reflective liquid crystal display, an electroluminescence display, or the like can be used.

[0101] The display unit may also be configured to receive a video signal and project it onto a diffusion screen or the like, thereby displaying the video on the surface of the diffusion screen or the like. For example, the display unit may be a projector that projects the real space map 202, the virtual space map 201, or the AR landscape onto a diffusion screen or the like. In this case, the surface of the window WIN of the mobile body MOV may be used as a diffusion screen, and the AR landscape or the like may be projected onto the screen for display.

[0102] The display DIS can be selected and employed without particular restrictions as long as it includes the above-mentioned units and has the function of controlling information transmission between these units, and a preferred embodiment is one in which a program for controlling the units included in other information communication terminals such as a tablet PC, notebook PC, smartphone, etc. Furthermore, a wearable computer or head-mounted display that includes the above-mentioned units and into which a program for controlling them can be installed can also be employed as a display constituting the present invention.

[0103] Furthermore, the components of the display do not all need to be included as a single unit, and a plurality of devices may include some of the components. In other words, the display may be configured as a plurality of devices.

[0104] The mobile body MOV is a machine that is capable of moving and has the function of allowing the user to view the outside scenery 509 from inside through the window WIN. Its movement can be by direct human operation, remote control by a human, or unmanned autonomous movement. The window WIN is made of a transparent material that transmits outside light and is fixed on the exterior of the mobile body MOV, and multiple windows WIN can be installed on one mobile body MOV.

[0105] When a vehicle such as a bus is used as the mobile MOV, the display units can be distributed to multiple locations in the vehicle, and the display functions can be realized by communicating between these units. In this case, it is more preferable that the communication between the display units is performed by CAN communication, which is the same as the communication between devices inside the vehicle.

[0106] Furthermore, a management server 150 can be added as a component of the video display system 1 according to the present invention. The management server 150 is connected to the display via a network NET, and is capable of inputting and recording information from the external information output unit 107 of the display.

[0107] In this embodiment, the processing on the display DIS may be performed by the video content control device 10.

[0108] ● Primary control by display The judgment unit 410 of the display DIS is characterized by performing control (hereinafter referred to as first control) to reconstruct the virtual space map 201 so that the virtual position 205 is positioned on the specified route 203 when the virtual position 205 deviates from the specified route 203 on the virtual space map 201 input from the specified route input unit 408.

[0109] FIG. 12 is a diagram conceptually illustrating the first control. Here, an explanation will be given using FIG. 12. First, the designated path 203 input from the designated path input unit 408 is expressed as a line segment (hereinafter referred to as P1P2) connecting P1 and P2 on the virtual space map 201, which is a two-dimensional plane. Any points on the virtual space map 201 and the real space map 202, both of which are two-dimensional planes, can be converted to each other using a function. Here, the function that converts a point on the virtual space map 201 to a corresponding point in real space is G, and the function that converts a point on the real space map 202 to a corresponding point on the virtual space map 201 is F. Here, the conversion using the function G and the function F is injective, and the inverse function of G is F, and the inverse function of F is G.

[0110] P1P2 is projected onto the real space map 202 by G as a line segment connecting p1 and p2 (hereinafter referred to as p1p2). Next, the current position p is determined by the GNSS signal input from the position detection unit 404. Furthermore, the display is moved by the moving body MOV that moves together with the display so that the geographical position of the display is located on p1p2. Here, p is projected as point P on the virtual space map 201 by F. At this time, P is not located on P1P2 and is separated from P1P2.

[0111] Next, any point P on P1P2 c The point where the length of the line segment connecting P and P is the shortest is selected, that is, the point where the circle on the virtual space map 201 with P as the center and P1P2 are in contact with P. c and P c The points on the virtual space map 201 are transformed so that P coincides with P. The transformation function generated at this time is C t Then, P1P2 is also C tAs a result, a virtual position 205 is positioned on the specified route 203 on the virtual space map 201.

[0112] When the moving object moves on p1p2 on the real space map 202, P1P2 and P on the virtual space map 201 become separated. t is generated and controlled so that a virtual position 205 moves along a specified route 203 on a virtual space map 201.

[0113] Here, the first control can be performed when the distance between P1P2 and P exceeds a predetermined value. Specifically, when P is projected onto the real space map 202 by G, it is preferable to perform the first control when the distance between the projected point and p1P2 exceeds 50 m.

[0114] ● Secondary control by display The judgment unit 410 is characterized by correcting an error in the display position of the virtual space object 510 in the AR landscape displayed on the display unit, which occurs due to a detection error by the direction detection unit 405, and performing control (hereinafter referred to as second control) to display the virtual space object 510 in the correct position in the AR landscape.

[0115] FIG. 13 is a diagram conceptually showing the second control. Here, explanation will be given using FIG. 13. In the following explanation, the symbols G, F, p, p1, p2, and p1p2 have the same meanings as those in FIG. 12. First, in the real space, the moving body MOV and the display move on p1p2 projected onto the real space map 202. p1p2 is divided into a finite number of sections, and for example, counting from p1 as the starting point, the nth section is the point p on p1p2. n-1 and point p n Here, when the display moves from p1 to p2, it stores the position information of at least the previous section and inputs it to the decision unit 410. For example, when the moving body MOV and the display DIS are located in the n-th section, the position information of the (n-1)th section, that is, the point p n-2and point p n-1 The information is recorded and input to the decision unit 410. Here, the suffixes n, n-1, and n-2 indicate the division to which the point p belongs.

[0116] The position p of the moving body MOV and the display DIS on the real space map 202 is p n When the direction of the display matches the direction of the display, the direction detection unit 405 detects the direction d1 n At this time, p n and p n-1 and connect them as strings to form p n-1 The direction from to pn is d2n. Here, the direction d2 n When the number of divisions of p1p2 is increased infinitely, p n Since it coincides with the tangent of p1p2 at n This means the true direction of movement of the moving body MOV and the display.

[0117] p is p n When the direction d1 indicated by the direction detection unit 405 is n and the direction d2 calculated by receiving the GNSS signal by the position detection unit 404. n is the angle Ψ n The direction d1 detected by the direction detection unit 405 n However, the reason why it does not match the true moving direction d2n is that the direction detection unit 405, which is made up of an electronic compass or the like, is subject to electrical or magnetic disturbances from external fields including each part of the display and the moving body MOV. n and d2 n The angle Ψ n is defined as the error angle.

[0118] Next, p n In this case, the virtual space object 510 is rotated by an angle θ with respect to the moving direction of the moving body MOV and the display. n In the case where the image is set in advance to be displayed on a display unit facing in a direction forming an angle of d1, the moving direction d1 detected by the direction detection unit 405 is n and θ nHowever, the actual moving direction of the moving object MOV and the display DIS is d2 n Therefore, d2 n and θ n Even if the display unit is turned in a direction that forms an angle with the virtual object 510, the virtual object 510 is not displayed. This is because the error angle Ψ n This is due to the existence of

[0119] Here, the true moving direction d2 of the moving body MOV and the display DIS n θ was set in advance n The direction in which the virtual space object 510 is displayed is set to p so that the virtual space object 510 is displayed when the display unit is pointed in a direction that forms an angle of n The error angle Ψ is the center n The determination unit 410 performs control to rotate the direction of the virtual space object 510 by the error angle. r Generate.

[0120] Here, the second control can be performed when the error angle Ψ exceeds a predetermined value. Specifically, it is preferable to perform the second control when the angle d1 detected by the direction detection unit 405 and the true moving direction d2 calculated from the GNSS signal exceeds 60 degrees.

[0121] The function C generated in the first control t and the function C generated in the second control rand the virtual position P or real position p, a set of combinations of the virtual position P or real position p can be recorded in the determination unit 410 and then stored in the management server 150 as a database for utilization. For example, when the same specified route 203 is input, by referring to the control of the geographical position when moving along the specified route 203 stored in the management server 150, it becomes unnecessary for the determination unit 410 to make a determination each time. In this case, since there is no need to operate each part of the display, transmit data between each part, or make a determination by the determination unit 410, it is possible to reduce energy consumption in the entire system, and therefore it is possible to provide not only an augmented reality landscape display system with highly accurate position control and direction control, but also an energy-saving augmented reality landscape display system.

[0122] (Embodiment 6) Next, a description will be given of a sixth embodiment. In this embodiment, a method for linking the video display system 1 with a virtual person dialogue system will be described.

[0123] Overview of the virtual person dialogue system The virtual person dialogue system is a system that allows a user to have a simulated dialogue with a virtual person by playing back video and voice of a specific virtual person who is not actually present and automatically generating speech content. The person for whom a virtual person is generated (hereinafter also referred to as the "target person") is assumed to be a deceased person, a celebrity, a war veteran, or other narrator who has no or limited opportunities to speak due to location or time restrictions, but any person can be used. In this embodiment, a person related to the current location or destination of a moving object MOV such as a bus, a travel guide, etc. may also be selected as the target person.

[0124] The virtual character is generated based on information about the target person registered by the user and model data (described later). The virtual character is reproduced on the user terminal 610 (see FIG. 14), and moves, speaks, talks to the user, and answers questions from the user as if it were actually present.

[0125] 14 is a schematic diagram of a virtual person dialogue system according to a sixth embodiment of the present invention. As shown in FIG. 14, a user U communicates with a cloud computer C, which has part or all of the configuration of the virtual person dialogue system, via a user terminal 610, to dialogue with a virtual person K. When the user U logs in to the cloud computer C via the user terminal 610 (step S601), an image of the virtual person K is transmitted from the cloud computer C (step S602). When the user U speaks to the virtual person K (step S603), the cloud computer C analyzes the content of the input message, generates a reply based on the predetermined personality of the virtual person K, and plays the reply together with the image on the user terminal 610 (step S604).

[0126] Fig. 15 is a functional block diagram of a virtual person dialogue system according to the sixth embodiment of the present invention. As shown in Fig. 15, a virtual person dialogue system 601 according to the present invention (hereinafter also referred to as "this system 601") is configured by connecting a storage device 620, a virtual person generation device 630, and a moving image generation device 640 via a network NW. This system 601 is connected to a user terminal 610 owned by a customer via the network NW, and information can be sent and received between them. Note that the network NW in this system 601 may be the same network as the network NET shown in Fig. 10, or may be a different network.

[0127] The user terminal 610, storage device 620, virtual character generation device 630, and moving image generation device 640 may be connected to each other wirelessly or by wire. Note that storage device 620, virtual character generation device 630, and moving image generation device 640 may be configured as a single device. Also, some or all of the functions of storage device 620, virtual character generation device 630, and moving image generation device 640 may be realized on a cloud computer C. Also, storage device 620, virtual character generation device 630, and moving image generation device 640 may be configured integrally with video content control device 10 shown in FIG. 1, FIG. 2, etc.

[0128] The user terminal 610 is an information processing terminal used by a user who interacts with a virtual character, and includes an input unit 611, an output unit 612, a display unit 613, an information source registration unit 614, and a communication processing unit 619. The user terminal 610 is, for example, a personal computer. The user terminal 610 may also be a smartphone or a tablet terminal. The user terminal 610 connected to the system 601 may be a single or multiple user terminals 610.

[0129] The input unit 611 is a functional unit for inputting a message from the user to the virtual character, and is composed of a keyboard, a touch panel display, a microphone, and the like.

[0130] The output unit 612 is a functional unit that outputs a message from the virtual character, and is configured with a display that displays the message in text, a speaker that outputs the message as audio, or the like.

[0131] The display unit 613 of the user terminal 610 may be a flat playback device such as an LCD screen, or may be a device that plays back an image of a virtual character in three dimensions, such as a head-mounted display type VR display device or a hologram (three-dimensional image) display device. If the user terminal 610 is configured as a device that plays back an image of a virtual character in three dimensions, interaction with the virtual character can be made more realistic. Furthermore, the display unit 613 may be a projection device that allows multiple users to view the image of one virtual character simultaneously.

[0132] The display unit 613 may display using a user interface (UI) unique to the system 601, or the system 601 may be linked to an existing chat tool such as SKYPE (registered trademark) so that messages and videos from the virtual person are displayed on the existing tool. This configuration allows the user to feel as if they are chatting with a real person, making the conversation with the virtual person feel more realistic.

[0133] Furthermore, the user terminal 610 may be linked to the video display system 1, and the video displayed on the display of the user terminal 610 (for example, a video of a virtual character responding to a question from the user) may be displayed on the display DIS of the video display system 1. In this case, the image of the virtual character may be displayed superimposed on the video content output from the video content control device 10 on the display DIS. Furthermore, the audio output from the speaker of the user terminal 610 (for example, the audio of the virtual character responding to a question from the user) may be output from the speaker SP of the video display system 1. In this case, in order to avoid affecting the audio of the video content, the audio of the virtual character may be converted into text and displayed as video on the display DIS.

[0134] The information source registration unit 614 is a functional unit that acquires information about the target person, i.e., the information source of the target person. The information source includes, for example, videos, still images, and audio sources that include the target person, as well as records such as diaries created by the target person, documents expressing the person's hobbies and preferences, and text data such as social media. The information source also includes information about the person's possessions, such as clothing. The information source may be registered by the user or acquired via the Internet. The acquired information source is transmitted to the virtual person generation device 630.

[0135] The communication processing unit 619 is a functional unit that exchanges information with the system 601 via the network NW, and the communication format is arbitrary.

[0136] When a user registers information about a target person through user terminal 610, virtual person generation device 630 processes the information and determines the image, voice, personality, etc. of the virtual person. The determined virtual person data is stored in storage device 620 and is called up as appropriate by video generation device 640. Video generation device 640 generates a video including the image, voice, and message of the virtual person based on the virtual person data, and displays it on user terminal 610.

[0137] Storage device configuration The storage device 620 includes an arithmetic unit such as a CPU (Central Processing Unit) for executing information processing, and storage devices such as RAM (Random Access Memory) and ROM (Read Only Memory), and thus has, as software resources, at least an image model DB 621, a personality model DB 622, a virtual character data storage unit 623, and a communication processing unit 629. In this specification, "DB" is an abbreviation for "database."

[0138] The video model DB 621 is a storage unit that stores multiple types of video models of human movements. A video model is a video template used to generate an image of a virtual person. The video model is data that configures the shape and movement of the torso in particular. The video model is also configured to integrate face data, which will be described later, and move the integrated face data together with the torso image.

[0139] The video model includes the appearance of multiple types of people with different physiques depending on height, weight, age, etc. The video model also includes multiple types of clothing that can be worn by each person and played back. Furthermore, the video model includes various data on the movements of people with each appearance, including data on movements that are commonly performed during conversation, such as nodding, folding arms, and raising hands. The video model may be a video of an actual person, a video modeled using CG, or both.

[0140] The personality model DB22 is a storage unit that stores multiple types of personality models for people. The personality model includes, for example, characteristics of answers to questions, and determines the answer policy, such as whether the content is positive or negative, and the emotions expressed in the answer. Furthermore, the personality model is not limited to answers to questions from users, but may also be characteristics of messages depending on the season, time of day, etc. The personality model DB22 may also store responses to questions that are expected in advance and that are in line with each personality model. This configuration reduces the computational burden of generating responses in line with the personality model to standard questions.

[0141] The virtual character data storage unit 23 is a storage unit that stores information about an image model, a personality model, and a voice determined for each virtual character. The virtual character data storage unit 23 also stores information known to the virtual character, such as episodes and personal experiences of the target character. The virtual character data is determined and stored by the virtual character generation device 630. The virtual character data is also called up by the video generation device 640 when a video of the virtual character is played back.

[0142] ●Configuration of the virtual person generation device The virtual person generation device 630 is equipped with a computing device such as a CPU for executing information processing, and storage devices such as RAM and ROM, and is thereby equipped with at least a video processing unit 631, an audio processing unit 632, a personality processing unit 633, and a communication processing unit 639 as software resources.

[0143] The video processing unit 631 is a functional unit that extracts appearance data used to generate a virtual character from data of a target person. The appearance data includes data such as the target person's face, body, hairstyle, and clothing. The video processing unit 631 also selects a video model to use in generating the virtual character and determines the video data to use for the virtual character's video. The video processing unit 631 may extract the appearance data of the virtual character based on information sources registered via the information source registration unit 614 of the user terminal 610, as well as information sources acquired from the Internet. The video processing unit 631 may also extract appearance data to use in generating a single virtual character based on information sources registered from multiple user terminals 610. When multiple users, such as celebrities, interact with a common virtual character, each user registers an information source for one virtual character. This configuration allows a virtual character to be generated based on more information sources, enabling more realistic interactions.

[0144] The video processing unit 631 has a video acquisition unit 6311 , a still image acquisition unit 6312 , a trimming unit 6313 , an image correction unit 6314 , a video model selection unit 6315 , and a face insertion unit 6316 .

[0145] The video acquisition unit 6311 is a functional unit that acquires video data. The video acquisition unit 6311 acquires videos included in an information source registered in the user terminal 610. The video acquisition unit 6311 can also prompt the user to shoot a video through the user terminal 610. Situations in which a video can be shot through the user terminal 610 include, for example, when the target person is a person close to the user and a virtual person is displayed on another user terminal 610, or when a virtual person is generated so that the target person can be interacted with even after the target person has passed away. In this case, the video acquisition unit 6311 may display a tutorial on the user terminal 610 to encourage the user to shoot a video.

[0146] The still image acquisition unit 6312 is a functional unit that acquires still image data. The still image acquisition unit 6312 acquires still images included in an information source registered in the user terminal 610. The still image acquisition unit 6312 can also prompt the user to take a still image through the user terminal 610. In this case, the still image acquisition unit 6312 may cause the user terminal 610 to display a tutorial to encourage the user to take a still image, i.e., a photograph. The still image acquisition unit 6312 also converts video data into still images and acquires them. The still image acquisition unit 6312 extracts images of a target person from various angles and images of various facial expressions and converts them into still images.

[0147] The trimming unit 6313 is a functional unit that trims and extracts data of a target person from a still image. The trimming unit 6313 may have a face recognition function and be able to automatically extract only the face of the target person.

[0148] The image correction unit 6314 performs color correction and resolution correction on the extracted images to equalize the quality of the extracted images. The image correction unit 6314 may also determine whether the extracted images are clear or not, and exclude unclear images from the extracted data group. The image correction unit 6314 may also exclude images with a resolution lower than a predetermined value from the extracted data group.

[0149] The video model selection unit 6315 is a functional unit that selects a video model to be used for generating a virtual person from the data in the video model DB 621. The video model selection unit 6315 may select a video model that is most similar to the target person based on the appearance data acquired by the video acquisition unit 6311, or may present multiple video models to the user terminal 610 and allow the user to select a video model to use. With this configuration, a video of a virtual person can be created using video models without having to register a sufficient number of information sources showing the virtual person moving.

[0150] The video model selection unit 6315 may determine the clothing of the virtual person to be generated based on appearance data or on possession information included in the information source. The video model selection unit 6315 may also select the clothing of the virtual person from the video model DB 621. That is, if there is an information source in which the target person is wearing that clothing, a video of the virtual person can be generated based on that information source. Even if there is no information source for the target person, a video of the virtual person can be generated based on possession information. Since clothing data can be selected from the video model DB 621, a virtual person can be easily generated even if data regarding the target person's clothing is insufficient. The video model selection unit 6315 may generate videos of virtual people wearing multiple types of clothing, and the clothing may be changeable based on the season, time of day, or user selection.

[0151] The video model selection unit 6315 may determine the hairstyle of the virtual person to be generated based on the appearance data, or may select the hairstyle of the virtual person from the video model DB 621. Furthermore, the video model selection unit 6315 may create videos of virtual people with multiple types of hairstyles, and the hairstyle may be changeable.

[0152] In the above explanation, it has been assumed that the video processing unit 631 extracts data of a virtual character based on the information source of the target person himself / herself. However, it is also possible to newly capture video or still images of a person who resembles the target person and use them to generate a virtual character. Also, it is possible to partially use the appearance data of a similar person, such as hairstyle or clothing, to generate a virtual character. In other words, the user may be able to select elements of the appearance data to be used to generate a virtual character.

[0153] The face insertion unit 6316 is a functional unit that integrates, into the used video model, face data extracted by the video acquisition unit 6311, still image acquisition unit 6312, trimming unit 6313, and image correction unit 6314. The face insertion unit 6316 integrates the face data into the torso configured by the used video model, and creates a full-body image of a virtual person.

[0154] The voice processing unit 632 is a functional unit that artificially generates the speaking voice of the virtual person. The voice processing unit 632 includes a voice extraction unit 6321 and a voice generation unit 6322.

[0155] The voice extraction unit 6321 is a functional unit that extracts the voice of a target person from an information source. For example, the voice extraction unit 6321 may identify the voice of the person that is included for the longest time among multiple types of voices included in the information source as the voice of the target person.

[0156] The voice generation unit 6322 is a functional unit that generates the voice of the virtual character based on the voice extracted by the voice extraction unit 6321. The voice generation unit 6322 may trim the voice of the target character and edit it so that it can be played back as the voice of the virtual character. The voice generation unit 6322 may also select a voice similar to the voice of the target character from voice data prepared in advance and determine it as the voice of the virtual character. Furthermore, the voice generation unit 6322 may generate an artificial voice similar to the voice of the target character. Note that if a message from the virtual character is displayed as text, voice generation may not be necessary.

[0157] The personality processing unit 633 is a functional unit that determines the personality model of the virtual character. The personality processing unit 633 includes a text data registration unit 6331, a personality model selection unit 6332, and a personality model correction unit 6333.

[0158] The text data registration unit 6331 is a functional unit that extracts text data from information sources and stores it in the virtual person data storage unit 623. The text data registration unit 6331 extracts electronic text data from the target person's blog, SNS, etc., and stores it in the virtual person data storage unit 623 according to predetermined rules. The text data registration unit 6331 may also read a handwritten document by the target person, such as a diary, convert it into text data, and store it in the virtual person data storage unit 623. Furthermore, the text data registration unit 6331 may convert the target person's voice contained in audio or video data into text data and store it in the virtual person data storage unit 623.

[0159] The personality model selection unit 6332 is a functional unit that selects a personality model (hereinafter also referred to as a "used personality model") to be used in generating a virtual character from the personality model DB 622. The personality model selection unit 6332 presents a question about the personality of the virtual character via the user terminal 610. When an answer to the question is input from the user terminal 610, the personality model selection unit 6332 selects an used personality model to be used in generating a virtual character from the data in the personality model DB 622 based on the answer.

[0160] Multiple personality-related questions may be presented. Alternatively, questions may be presented according to a chart that links input answers to the next question. As the user answers the questions, a basic personality classification of the virtual character is determined based on pre-prepared basic personality categories. If personality were to be determined based on information about the target character's actual conversation, a vast amount of conversation information would be required. According to this system 601, the answers to personality-related questions can be classified into one of the pre-prepared personality categories, so that the virtual character's personality can be determined with a simple configuration even if information is insufficient.

[0161] The personality model of the virtual character may be determined for each scenario pattern according to the type of question from the user. The scenario pattern may be, for example, an everyday conversation or a consultation about a problem. Once a personality model is determined for some scenario patterns, a configuration may be made in which a dialogue conforming to the scenario pattern is possible. This configuration is convenient because a dialogue can be conducted by determining only the personality model for the necessary scenario pattern.

[0162] The personality model correction unit 6333 is a functional unit that corrects the personality model used by the personality model selection unit 6332. The personality model correction unit 6333 receives an evaluation of the response made by the virtual character from the user terminal 610 and corrects the personality model used based on the evaluation. For example, the user inputs an evaluation of whether the response was appropriate for the target person. The user may also evaluate the virtual character's actions accompanying the response. The personality model correction unit 6333 performs automatic learning using AI (artificial intelligence) or the like to correct the personality model. This configuration allows the virtual character's personality to be corrected to be more similar to that of the target person. Note that when multiple user terminals 610 simultaneously or at different times interact with a single virtual character, the evaluations from the multiple user terminals 610 may be used to correct the personality model of the single virtual character. This configuration allows for a large amount of feedback to be provided to the virtual character's personality model, making the virtual character's personality model closer to the target person's personality and improving interaction accuracy.

[0163] Furthermore, the personality model correction unit 6333 may determine whether a message from a virtual character was appropriate based on the user's response to the message, rather than on the user's evaluation, and may correct the personality model. The personality model correction unit 6333 may convert the content of the user's response into text data and analyze it, or may infer the user's level of satisfaction from the user's tone of voice.

[0164] The communication processing unit 639 is a functional unit that communicates with the user terminal 610, the storage device 620, and the video generation device 640 via the network NW.

[0165] ●Configuration of video generation device The moving image generation device 640 is a device that displays a moving image of the virtual person generated by the virtual person generation device 630 on the user terminal 610. The moving image generation device 640 includes a video display processing unit 641, a dialogue processing unit 642, and a communication processing unit 649.

[0166] The video display processing unit 641 is a functional unit that generates a speech video in which the virtual person speaks. The video display processing unit 641 performs modeling processing on the face data extracted from the appearance data, and makes the face data move in accordance with the speech.

[0167] The dialogue processor 642 is a functional unit that generates a message to be spoken by the virtual character based on the usage personality model. The content of the message may be a response to a question from the user, or may be words generated based on the date, season, time of day, or external information such as weather forecasts or news on the Internet. Furthermore, when responding to the user, the response may be generated based on the usage personality model as well as external information such as the date, season, time of day, or weather forecasts or news on the Internet. The dialogue processor 642 determines the optimal response using AI.

[0168] The message generated by the dialogue processing unit 642 is spoken in a voice generated by the audio processing unit 632 and is played on the user terminal 610 together with the spoken image generated by the image display processing unit 641. The voice of the virtual character may be the lines of the target character extracted by the audio extraction unit 6321. Alternatively, it may be played based on sound source data of a similar voice determined in advance. Furthermore, an artificial voice may be generated and played.

[0169] The communication processing unit 649 is a functional unit that communicates with the user terminal 610, the storage device 620, and the virtual person generation device 630 via the network NW.

[0170] ●The process for deciding which video model to use The flow of how the virtual person generation device 630 determines the video model to be used will be described using FIG. 16. As shown in the figure, first, the information source of the target person is registered from the user terminal 610 and transmitted to the virtual person generation device 630 (step S611). Next, the virtual person generation device 630 extracts appearance data from the information source (step S612). Of the appearance data, moving images are converted into still images (step S613). Next, the registered still images and still images converted from the moving images are cropped, and the color tone and resolution of the images are corrected (step S614). The cropping and image correction can be performed in any order. At this time, if the data quality is below a predetermined level even after correction, it may be decided not to use the image in subsequent processes.

[0171] Next, the virtual person generation device 630 stores the trimmed and corrected image in the virtual person data storage unit 623 of the storage device 620 (step S615). The virtual person generation device 630 refers to the video models stored in the video model DB 621 based mainly on information about the physique of the stored image (step S616), selects the video model that most resembles the appearance of the target person, and displays it on the user terminal 610 (step S617). At this time, multiple candidate video models may be displayed on the user terminal 610, allowing the user terminal 610 to select the video model to be used. Alternatively, the user terminal 610 may be able to select a video model different from the presented video model.

[0172] Next, the user terminal 610 accepts input to individually change features of the used video model (step S618). Features include face contours, eyes, nose, mouth, etc. At this time, selections regarding the virtual model's hairstyle and clothing may also be input. Once the features of the used video model have been appropriately changed and the used video model of the virtual person has been determined, face data extracted from the appearance data is integrated into the used video model (step S619). Next, the used video model with the integrated face data is stored in the virtual person data storage unit 623 of the storage device 620 (step S620).

[0173] ●The process for generating a virtual character's voice 17, the flow of how the virtual person generation device 630 generates a voice of a virtual person will be described. First, when an information source is registered from the user terminal 610 (step S621), the virtual person generation device 630 extracts voice data of the target person from the information source (step S622). The virtual person generation device 630 generates the voice of the virtual person based on the voice data (step S623).

[0174] ●The process of determining the personality model of a virtual character 18, the flow of how virtual person generation device 630 determines a personality model for a virtual person will be described. When an information source is registered from user terminal 610 (step S631), virtual person generation device 630 extracts text data such as blogs and SNS from the information source (step S632). At this time, image data such as handwritten diaries is also extracted and converted into text data. Furthermore, sound source data is extracted and the voice of the target person is converted into text data. The extracted text data is stored in virtual person data storage unit 623 based on predetermined rules (step S633).

[0175] Next, the virtual person generation device 630 causes questions regarding the personality of the target person to be displayed on the user terminal 610 (step S634). At this time, the content of the questions may be determined based on the registered information source. Alternatively, the user may be prompted to select a scenario pattern to be registered, and questions corresponding to that scenario pattern may be displayed. The user terminal 610 accepts input of answers to the questions (step S635). At this time, multiple questions may be displayed at once, or steps S634 and S635 may be executed repeatedly.

[0176] Based on the answers to the personality questions, virtual person generation device 630 refers to the personality models stored in personality model DB 622 (step S636) and determines the personality model to use (step S637).Then, the determined personality model to use is stored in virtual person data storage unit 623 (step S638).

[0177] ● How to interact with a virtual person The flow of a user interacting with a virtual character using the virtual character interaction system will be described with reference to FIG. 19. When an ID and password are input into the user terminal 610 (step S641), the user is authenticated by the virtual character generation device 630 (step S642), and the user is able to interact with the virtual character associated with the ID. At this time, an effect may be added in which the user receives a chat message, a phone call, or an email from the virtual character. Next, data of the virtual character with whom the user is interacting is retrieved from the virtual character data storage unit 623 of the storage device 620, and the data is made available for reference by the video generation device 640 (step S643). That is, an image of the virtual character is displayed on the user terminal 610. The virtual character may speak or move when displayed.

[0178] When a question is input to the virtual character from the user terminal 610 (step S644), the moving image generating device 640 generates a moving image in which the virtual character responds, based on the data of the virtual character.

[0179] Specifically, first, the moving image generation device 640 generates a response text to the question based on the personality model of the virtual character (step S645). The moving image generation device 640 also generates a response voice that reproduces the response text in the voice of the virtual character (step S646). The response voice may be stored audio data of the target character or an artificially generated artificial voice. The moving image generation device 640 also generates a response video to be played when the response voice is reproduced (step S647). The generated response voice and response video are transmitted to the user terminal 610 as a response video (step S648). The response voice and response video may be integrated into a single data file and transmitted to the user terminal 610, or separate data files may be transmitted to the user terminal 610. Next, a video of the virtual character is displayed on the user terminal 610 (step S649). That is, the virtual character responds to the user's question, and a dialogue with the virtual character is established. The processes from step S644 to step S649 may be repeated multiple times. This configuration allows for natural interaction with the virtual person.

[0180] 19 has described the flow of generating a moving image of a virtual person in response to input of a question to the user terminal 610 shown in step S644, but a configuration may also be adopted in which a moving image of a virtual person is generated when a predetermined date or time arrives and displayed on the user terminal 610. Also, a moving image may be generated based on external information from the Internet or the like, or based on an instruction from an administrator of the virtual person dialogue system 601. A moving image may be displayed on the user terminal 610 immediately after it is generated, or a moving image may be generated in advance and displayed on the user terminal 610 in response to a question from the user, a date, a time, external information, an instruction, or the like.

[0181] Following step S649, when an evaluation of the video is input from the user terminal 610 (step S650), the virtual person generation device 630 corrects the personality model and stores it in the virtual person data storage unit 623 of the storage device 620 (step S651).

[0182] In this way, the virtual character dialogue system 601 according to this embodiment can generate a speech video of a virtual character with a simple configuration.

[0183] Furthermore, according to this embodiment, the user terminal 610 can be linked to the video display system 1. With this configuration, it is possible to display, on the display DIS of the video display system 1, an image such as a reply image of a virtual character to a question from a user in the virtual character dialogue system 601. Also, with this configuration, it is possible to output, from the speaker SP of the video display system 1, an audio such as a reply audio of a virtual character to a question from a user in the virtual character dialogue system 601.

[0184] ●Other configurations The video display system 1 may display video content related to the content of a dialogue between a user and a virtual character in the virtual character dialogue system 601 on the display DIS and output audio corresponding to the video content from the speaker SP. Specifically, the video content control device 10 analyzes a message to the virtual character input from the user terminal 610 and a reply audio of the virtual character transmitted from the cloud computer C to the user terminal 610, and extracts keywords from the content of the dialogue. These keywords include, for example, local names, famous places such as tourist destinations, local products, and people's names. The video content control device 10 then selects video content that is close to the content of the keyword, displays the selected video content on the display DIS, and outputs corresponding audio from the speaker SP. In this case, each video content is stored in the storage 15 in a state where the keyword is associated with the video content.

[0185] According to this configuration, it is possible to realize, in the video display system 1, the display of video content and the output of corresponding audio in accordance with the content of the dialogue in the virtual person dialogue system 601. This also makes it possible to provide passengers with an augmented reality in accordance with the content of the dialogue in the virtual person dialogue system 601.

[0186] It should be noted that the present invention is not limited to the above-described embodiment, and includes various modifications. For example, the above-described embodiment has been described in detail to clearly explain the present invention, and it may not necessarily be necessary to include all of the described configurations.

[0187] Furthermore, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment or modified example, etc. It is also possible to add the configuration of another embodiment to the configuration of one embodiment. Note that the elements and relative sizes between elements shown in the drawings are simplified and idealized to make the present invention easier to understand, and may be more complicated in actual implementation. [Explanation of symbols]

[0188] 1...Video display system, 10...Video content control device, 50...Light-adjusting screen main body, 52a...Upper motor, 53a, 53b...Lower motor, CAM...Camera, DIS...Display, SEN...External light sensor.

Claims

1. A video display system that provides augmented reality or mixed reality on a moving object, The display and A speaker and a dimming screen device installed behind the display; a video content control device that controls the display, the speaker, and the dimming screen device; Equipped with The dimming screen device is The dimming screen itself, An ambient light sensor; Equipped with The dimming screen body is a light control screen unit having a plurality of light control screens; a motor that rotates the dimming screen unit to display a predetermined dimming screen; a signal processing unit that controls the motor based on a dimming screen control signal transmitted from the video content control device; a frame on which the light control screen unit, the motor, and the signal processing unit are installed; Equipped with the video content control device acquires the illuminance of external light outside the moving body from the illuminance data transmitted from the external light sensor, calculates a desired external light transmittance based on the illuminance, selects the light control screen corresponding to the calculated external light transmittance, and transmits a light control signal including information on the selected light control screen to the light control screen main body; the signal processing unit controls the motor based on the dimming screen control signal; Video display system.

2. 2. The video display system according to claim 1, The light control screen unit includes a first winding portion and a second winding portion, both ends of which are wound up, and a plurality of the light control screens are connected to each other. the first winding section and the second winding section are disposed at both ends of the frame, The motor a first motor corresponding to the first winding section; a second motor corresponding to the second winding section; Equipped with Video display system.

3. 3. The video display system according to claim 2, the first motor and the second motor are disposed on one end side of the light control screen unit, a first motor synchronization belt is provided to rotate the first winding section, the first motor, the second winding section, and the second motor in cooperation with one another; Video display system.

4. 4. The video display system according to claim 3, the motor includes a third motor disposed on the other end side of the light control screen unit, a second motor synchronization belt is provided to rotate the second winding section and the third motor in cooperation with each other; Video display system.

5. 3. The video display system according to claim 2, the signal processing unit adjusts the rotation speed of the first motor and the rotation speed of the second motor according to the winding diameter of the first winding unit and the winding diameter of the second winding unit, respectively. Video display system.

6. 2. The video display system according to claim 1, a camera for capturing an image of the outside of the moving body; the video content control device acquires a scenery saturation of an external scenery from the imaging data transmitted from the camera, acquires a brightness and an image saturation of the video content from the video data of the video content displayed on the display, and calculates the external light transmittance based on the scenery saturation, the illuminance, the brightness, and the image saturation; Video display system.

7. 7. The video display system according to claim 6, the video content control device calculates the external light transmittance for each region of the video content; Video display system.

8. 2. The video display system according to claim 1, The light control screen unit includes a light control screen that makes the external light transmittance uniform within an area of ​​a predetermined shape. Video display system.

9. 9. The video display system according to claim 8, The external light transmittance within the region of the predetermined shape is higher than the external light transmittance of the other region. Video display system.

Images