Audio output switching circuit for high-definition TV and PC signal switching in multi-synchronous receiver

摘要

The present invention relates to a circuit for converting an audio signal of a high definition television and an audio signal of a PC received in a multiplex synchronous receiver which accommodates both a high definition TV signal and a PC signal so as to be output, A synchronous signal separator 10 for separating an inputted signal into whether it is an HDTV signal or a PC signal and separating the inputted signal and outputting the input signal; a synchronous signal separator 10 electrically connected to the synchronous signal separator 10, A noninverting amplifier (20) amplifying a separated signal output from the noninverting amplifier (20) to a predetermined magnitude; a noninverting amplifier (20) electrically connected to the noninverting amplifier (20) A state control unit 30 for outputting a control signal for closing four acoustic channels when the input signal is a PC signal, And an audio output control unit 40 for controlling six audio channels in accordance with a control signal output from the state control unit 30. The high-definition TV and the audio output switching circuit The HDTV signal and the PC signal are received and processed, and the HDTV signal input from the multi-synchronous receiver is separated from the PC signal, so that the audio channel used in each signal can be controlled so that unnecessary channels are not used It has the effect of enhancing the audio sound effect of each signal.