Abstract: A display device has liquid crystal display panels aligned in a horizontal scan direction. The liquid crystal display panels constitute one virtual display area. A decoder decodes image data, to thereby generate pieces of pixel data having addressees corresponding to the virtual display area. A bridge circuit specifies a target (display destination) on which the pixel data is to be displayed on the basis of a parameter table indicating a correspondence between the virtual display area and each of display areas of the liquid crystal display panels. The pixel data are stored in line buffers corresponding to the specified display destinations and outputted to the liquid crystal display panels. Out of the pixel data, pixel data corresponding to a gap formed between two liquid crystal display panels are discarded.

Abstract: A plurality of lighting devices are respectively arranged, on a ceiling surface, at a plurality of grid points of the ceiling surface partitioned in a grid pattern. A detection unit detects occupancy statuses of a plurality of seats located correspondingly to positions of the plurality of grid points. A controller is capable of communicating with each of the plurality of lighting devices. The controller includes a light-control information generating unit that regards a block formed of a plurality of grid points centering around a grid point of an occupied location as one group to generate, for each of groups set correspondingly to occupied locations, light control information on a lighting device that becomes a dimming target in the group. The controller also includes a transmission unit that transmits the light control information. The lighting device being a dimming target among the plurality of lighting devices performs light control based on the received light control information.

Abstract: A luminaire recognition device in a lighting system having multiple luminaires with a dimming function installed in a predetermined area is configured to be arranged at a predetermined location in an area for associating identification information and installation site of each luminaire. The luminaire recognition device includes a controller configured to control an illuminance of each luminaire through communication, a detector configured to detect a brightness at the predetermined location, a memory configured to store correlation information between a brightness and distance from the predetermined location to each luminaire, and a processor configured to change an illuminance of a luminaire to be searched by a defined amount with the controller, calculate a change in brightness detected by the detector, and recognize the luminaire to be searched among the multiple luminaires, based on the change and the correlation information.

Abstract: A plurality of lighting devices are respectively arranged, on a ceiling surface, at a plurality of grid points of the ceiling surface partitioned in a grid pattern. A detection unit detects occupancy statuses of a plurality of seats located correspondingly to positions of the plurality of grid points. A controller is capable of communicating with each of the plurality of lighting devices. The controller includes a light-control information generating unit that regards a block formed of a plurality of grid points centering around a grid point of an occupied location as one group to generate, for each of groups set correspondingly to occupied locations, light control information on a lighting device that becomes a dimming target in the group. The controller also includes a transmission unit that transmits the light control information. The lighting device being a dimming target among the plurality of lighting devices performs light control based on the received light control information.

Abstract: A luminaire recognition device in a lighting system having multiple luminaires with a dimming function installed in a predetermined area is configured to be arranged at a predetermined location in an area for associating identification information and installation site of each luminaire. The luminaire recognition device includes a controller configured to control an illuminance of each luminaire through communication, a detector configured to detect a brightness at the predetermined location, a memory configured to store correlation information between a brightness and distance from the predetermined location to each luminaire, and a processor configured to change an illuminance of a luminaire to be searched by a defined amount with the controller, calculate a change in brightness detected by the detector, and recognize the luminaire to be searched among the multiple luminaires, based on the change and the correlation information.

Abstract: Image reproduction devices and a management device each hold moving image data. The management device goes into a reproduction standby state in which the moving image data can be reproduced and instructs the image reproduction devices to go into the reproduction standby state, by cascade communication. The management device starts reproduction of the moving image data and instructs the image reproduction devices to start reproduction of the moving image data, by broadcast communication. The management device periodically broadcasts synchronization information. The image reproduction devices use the synchronization information to specify a frame number of a frame displayed on the management device. Frames corresponding to the specified frame number are displayed on the display parts.

Abstract: Image reproduction devices (10a to 10e) and a management device (20) each hold moving image data. The management device (20) goes into a reproduction standby state in which the moving image data (50) can be reproduced and instructs the image reproduction devices (10a to 10e) to go into the reproduction standby state, by cascade communication. The management device (20) starts reproduction of the moving image data (50) and instructs the image reproduction devices (10a to 10e) to start reproduction of the moving image data (50), by broadcast communication. The management device (20) periodically broadcasts synchronization information (252). The image reproduction devices (10a to 10e) use the synchronization information (252) to specify a frame number of a frame displayed on the management device (20). Frames corresponding to the specified frame number are displayed on the display parts (110a to 110e).

Abstract: A display device has liquid crystal display panels aligned in a horizontal scan direction. The liquid crystal display panels constitute one virtual display area. A decoder decodes image data, to thereby generate pieces of pixel data having addressees corresponding to the virtual display area. A bridge circuit specifies a target (display destination) on which the pixel data is to be displayed on the basis of a parameter table indicating a correspondence between the virtual display area and each of display areas of the liquid crystal display panels. The pixel data are stored in line buffers corresponding to the specified display destinations and outputted to the liquid crystal display panels. Out of the pixel data, pixel data corresponding to a gap formed between two liquid crystal display panels are discarded.