| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that because of one-to-one connection by a Low Voltage Differential Signaling (LVDS) signal between a controller and a screen, a unit control substrate included in the screen requires an output circuit separately from an input circuit, and when a cable of an early stage unit control substrate comes off in a state where a plurality of unit control substrates are connected, a video image transmission of subsequent unit control substrates is disconnected.SOLUTION: A Low Voltage Differential Signaling (LVDS) interface output circuit 11 is provided inside a controller 1, and an LVDS interface input circuit 211 is provided inside a unit control substrate 21 of a screen 2. A video image transmission between the controller 1 and the screen 2 is configured to be performed by a bus 3 transmitting an LVDS signal, and in transmission of an LVDS, a vertical synchronization signal S, a horizontal synchronization signal S, a data enable signal DE, and video image control data Dc such as command information separate from a signal in a video image system of video image data Dg are configured to be multiplexedly transmitted. |
