| 摘要 |
PURPOSE: To provide a multiple video display device by which one sheet of video can be reproduced without mutually deviating the videos even when the projecting phase is changed and a projection tube is prevented from being burned in the case that a multi-screen is constituted. CONSTITUTION: The large-screen display device is constituted by arraying the M pieces of video projection devices 17a-17i in a horizontal direction and arraying the N pieces in a vertical direction. Then, at least one set of video projection devices out of the M×N pieces are mutually connected by cables for controlling 17j-17q. When a display position control signal is given to at least one video projection device, it is given to at least one of the other video projection device through the cables for controlling. Then, the positions of the videos displayed on the M×N pieces of video projection devices are controlled to be simultaneously moved in an identical direction.
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