Volume control for catv and method therefor

Details Volume control for catv and method therefor Volume control for catv and method therefor

H - Electricity

04

N

350/97

H04N 7/10 (2006.01)

Patent

CA 1222560

VOLUME CONTROL FOR CATV AND METHOD THEREFOR Abstract A volume control circuit useful for remotely controlling volume through a CATV remote control unit uses a sound carrier demodulator to obtain an intercarrier sound signal. The intercarrier sound signal is further demodulated to obtain a detected audio signal whose amplitude can then be easily controlled by an amplifier. The gain of the amplifier can then be controlled from the remote unit. The detected audio is then remodulated with the RF video carrier. The remodulated audio is then summed with the video signal to provide an RF output signal having amplitude controlled audio.

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