Analog/digital cable TV capable of performing bidirectional communication

摘要

An analog/digital cable TV (CATV) includes an analog broadcast signal processor for receiving only a signal of a particular channel selected by a user and restoring an analog video signal and an analog audio signal contained in the received analog signal. Also, the CATV includes a digital broadcast signal processor for NTSC-encoding and audio-digital-to-analog-converting the received digital video and audio signals contained in the digital broadcast signal received via a phone jack to then be output to an output signal selector, and outputting the upstream signal via the phone jack connected with a CATV broadcast station. The output signal selector selectively applies the signals output from the digital and analog broadcast signal processors to a monitor. The monitor video-displays and audio-outputs the video and audio data contained in the signal received from the output signal selector. A controller controls the operations of the analog broadcast signal processor, the digital broadcast signal processor and output signal selector.