Patent ID: 7420553

Claim:
A control circuit capable of enabling a display device to switch between a normal mode and a standby mode and reducing power consumption of said display device when in the standby mode, comprising: a synchro signal detection circuit, wherein when said synchro signal detection circuit detects a synchro signal of an analog computer image signals, said circuit will output a triggering signal; an infrared receiver, wherein when said infrared receiver detects an infrared signal sent by a remote controller, said infrared receiver will output a triggering signal; a power switch, wherein when said power switch is actuated, said power switch will output a triggering signal; a switch circuit which provides enough power for a peripheral circuit; and an MCU, wherein when said MCU inputs a triggering signal, said switch circuit will provide enough power for a peripheral circuit to run; said display device switches to normal mode; when said MCU does not input a triggering signal, said switch circuit will stop providing power to said peripheral circuit; then said display device switches to standby mode.