Patent ID: 8054384

Claim:
An audio-video switching device capable of auto-configuring a plurality of AV input signals comprising: an audio-video detecting module for receiving and detecting the AV input signals to generate an AV detecting result, the audio-video detecting module comprising: an input end for receiving one of the AV input signals; a current source coupled to the input end for providing a current to the input end; an ADC coupled to the input end for measuring a voltage value of the input end; and an audio-video judgment device coupled to the ADC for determining a type of the AV input signal according to the voltage value; an impedance adjustment module coupled to the audio-video detecting module for adjusting a matching impedance for the AV input signals according to the AV detecting result; and an audio-video switching module coupled to the impedance adjustment module for switching the AV input signals to output a plurality of AV output signals according to the AV detecting result.