| 摘要 |
<p>A display control device equipped with a controller (101) is provided with a state determination unit (214) for judging the power supply management state of a display on the basis of a combination of presence/absence of a horizontal sync signal (204) and a vertical sync signal (208), whereby the four states of "On", "Stand-By", "Suspend", and "Off" are judged in accordance with presence/absence of the horizontal sync signal (204) and the vertical sync signal (208) without using the controller (101). When there is a state change, an interruption signal is generated to control the controller (101), thereby to perform display power supply management without reducing the performance of the controller. Further, since the controller is also controlled, a further reduction in power consumption is achieved as the whole display set.</p> |
