Auxiliary gain control apparatus for a television receiver

Details Auxiliary gain control apparatus for a television receiver Auxiliary gain control apparatus for a television receiver

H - Electricity

04

N

350/82

H04N 5/58 (2006.01)

Patent

CA 1262569

Abstract In a television receiver, an output signal from a binary rate multiplier (BRM) is used to control the amplitude of a video signal and thereby the contrast of a displayed image. Contrast control in response to ambient lighting conditions is accomplished by means of a light dependent resistor which modifies the output pull-up voltage of the BRM.

563173

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