Recall circuit for quitting a power saving mode
View Patent ↗A recall circuit for quitting a power saving mode is disclosed, which is applicable to a television functioning as the display screen of a computer, which mainly uses a microprocessor to turn on the power of all chips in the television, monitors the communication via I 2 C pins, and detects which chips require operations without the use of a bi-channel analog mixer and segregator to shift the television from the power saving mode to a use mode.
1. A recall circuit for quitting a power saving mode and returning to a normal mode, applicable to a television alternatively functioning as a display screen for a computer, comprising:
a power regulator;
a signal-enabling detecting circuit receiving an enable signal from a remote device and outputting the enable signal;
a synchronizing signal detecting circuit receiving a horizontal synchronizing signal and a vertical synchronizing signal from the computer; and
a microprocessor electrically coupled to the power regulator, the signal-enabling detecting circuit and the synchronizing signal detecting circuit respectively;
wherein, when the microprocessor receives at least one inputting signal from the signal-enabling detecting circuit or the synchronizing signal detecting circuit, the microprocessor controls voltages provided by the power regulator for television to quit the power saving mode and return to the normal mode, and wherein the microprocessor is used to turn on the power, proceed communication via I2c pins, and detect which chips in the television are required to operate at its shift from the power saving mode to the normal mode.
2. The recall circuit for quitting the power saving mode as claimed in claim 1 , wherein the signal-enabling detecting circuit comprises an RE receiver, and the remote device is a remote controller used for transmitting the enable signal.
3. The recall circuit for quitting the power saving mode as claimed in claim 1 , wherein the enable signal is provided by a keystroke on the remote device.
4. The recall circuit for quitting the power saving mode as claimed in claim 1 , wherein the television is an LCD television.