Remote volume control by means of frequency modulation...

Details Remote volume control by means of frequency modulation... Remote volume control by means of frequency modulation...

H - Electricity

04

N

350/97

H04N 5/60 (2006.01)

Patent

CA 1228160

REMOTE VOLUME CONTROL BY MEANS OF FREQUENCY MODULATION FEEDBACK LOOP ABSTRACT OF THE DISCLOSURE A TV frequency modulation feedback loop (FMFB) remote volume control includes an RF input and a mixing means with the RF input being connected to and providing one input for the mixing means. A voltage controlled oscillator is connected to the mixing means and provides the other input thereto. The out- put from the mixing means is an IF FM sound signal which is con- netted to a demodulator. A remotely operable deviation control is connected to the output of the demodulator for changing the amplitude of the demodulated sound signal. The deviation control is connected to and provides a deviation controlled input for the VCO.

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