Audio and video contoller for electronic lecture, and electronic lecture system including the same

摘要

Because audio/video (AV) system has the dais of a controller and electronics, it is activated at the dais of electronics. AV (Phonotape and videotape),The controller of subject innovation is in AV(Phonotape and videotape)Controller is for converting audio-video signal,The 1 RGB signals including analog video signal,The multiple input terminals of the transmission of claim 2 RGB vision signals and multiple input signals and analog video signal are converted to a digital video signal and digital video signal one first signal of decoder and first pair of 33 RGB signal of RGB and output of one RGB encoders,Convert it to the RGB format signals for receiving and being received,First pair at least two 3 RGB signals selectively and video module includes converting for exporting related with analog video signal audio-video signal according to the demodulation of one 1 to 2 RGB signals and audio input signal passes through multiple audio input signals of volume controller to adjust the volume in the audio frequency in audio signal switch portion and at least one volume controller part,It includes the microphone input signal for exporting switch that volume controller from the volume of microphone input adjustment audio frequency, which is by mixed signal,,One output signal includes an audio volume control module,One control module,It is used to generate a video control signal and audio control signal response user's selectivity,It includes the mixting circuit for being output to an audio output device,Video switch unit includes a matrix switch,With multiple row and columns,The claim 1 for responding any claim 3 RGB signals of video control signal output pair enters the first video output signal and first pair of 3 RGB signal and exports another to one second video output signals,Select at least one volume controller audio switch unit,The first audio input signal of responsive control signal and the second video audio output signal,And it is related with output signal and the related audio-visual input signals of output.