| 摘要 |
PROBLEM TO BE SOLVED: To effectively utilize display areas originally not used for a projection when projecting images on indeterminate-shape screens, and to further increase appealing power as digital signage boards.SOLUTION: There are provided: projection systems 21 to 26 that project an image; and a CPU 32 that acquires a shape of a screen on which the images by the projection systems 21 and 26 are projected from a memory card attachment part IP, uses a part of areas in which projection by the projection systems 21 to 26 is available in accordance with the acquired shape of the screen to cause a first image to be projected, determines whether a communication object is present in an area off the screen, and in accordance with a result of the determination, causes the projection systems 21 to 26 to execute a data transmission by means of visible light to the communication object in the area off the screen. |
