Control circuit and method thereof for reducing power consumption of a display device
First Claim
1. 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.
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Abstract
The invention discloses a control circuit and method thereof, which enable a display device to have low power consumption. The display device is able to switch between a normal mode and a standby mode, and reduce the power consumption of the display device under the standby mode. A synchro signal detection circuit, an infrared receiver, and a power switch are used to determine when to output a triggering signal. If an MCU inputs a triggering signal, a switch circuit will provide electricity for a peripheral circuit, then the display device switches to the normal mode; otherwise, the switch circuit will stop providing electricity for the peripheral circuit, and the display device switches to the standby mode.
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Citations
11 Claims
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1. 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:
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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. - View Dependent Claims (2, 3, 4)
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5. A method of reducing power consumption of a display device, which enables a display device to switch between a normal mode and a standby mode and reduces power consumption of said display device when in the standby mode, the method comprising the steps of:
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(A) initializing a control circuit; (B) initializing a peripheral circuit; (C) determining whether said display device switches to the standby mode;
if it is in the standby mode, said peripheral circuit will be switched to the standby mode; and(D) determining whether a triggering signal is detected;
if said triggering signal is detected, said peripheral circuit will be switched to the normal mode;wherein when said peripheral circuit is in the standby mode, power for said peripheral circuit ceases. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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Specification