Abstract: 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 I2C 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.

Abstract: An audio/video switch circuit using the I2C bus includes a video decoder, an audio integrated circuit, an audio/video switch-unit and an MCU, in which the MCU is electrically connected to the audio/video switch unit through an I2C bus, allowing the control signals outputted by the MCU to be sent out to the audio/video switch unit through the I2C bus for controlling the switch of the audio/video switch unit, such that one of the input audio/video signals is outputted to the video decoder and the audio integrated circuit respectively through the switch of the audio/video switch unit.

Abstract: 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 I2C 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.