| 摘要 |
PURPOSE: To receive a digital video/audio signal of one system from one input terminal among digital video/audio signals of plural systems by using a demultiplexer to demultiplex the digital video/audio signals of plural systems into a video signal and an audio signal, processing the signals with respective signal processing circuits and using a multiplexer to provide an output. CONSTITUTION: Two systems of video audio signals S19, S20 resulting from superimposing an audio signal onto video signals from plural digital VTRs 18, 19 are given to a digital video audio processor 20, in which a video audio demultiplexer 23 is used to demultiplex the video audio signals, and they are respectively processed by video audio signal processing circuits 24, 25. Then outputs of the processing circuits 24, 25 are outputted from a multiplexer 26 as a video audio signal. Through this constitution, a signal for each system is received externally by one input terminal and number of external connection cables is remarkably reduced. |
