| 摘要 |
<P>PROBLEM TO BE SOLVED: To accurately transfer an operation mode by suppressing a manufacturing cost in a video display system. <P>SOLUTION: The video display system includes a personal computer (PC) and a liquid crystal display (LCD) device. The PC includes a normal operation mode and a stand-by mode. The LCD device includes a normal display mode and an energy saving mode. The PC repeats transmission of an operation mode indication signal, that is, transmission processing by bringing a first one line signal into a High-state in a vertical blanking period of a Y signal, when it is operated in the stand-by mode. When the LCD device is operated in the normal display mode, it receives the video signal which is output by the PC, and detects the operation mode indication signal, that is, a signal level for the first one line in the vertical blanking period of the Y signal. When it detects a High-state prescribed times or more, the operation mode is transferred from the normal display mode to the energy saving mode according to the operation mode switching list 34b. <P>COPYRIGHT: (C)2011,JPO&INPIT |
