Composite colour signal processing circuit

Details Composite colour signal processing circuit Composite colour signal processing circuit

H - Electricity

04

N

363/17, 350/58

H04N 9/44 (2006.01) H04N 9/455 (2006.01) H04N 9/64 (2006.01)

Patent

CA 1078535

Abstract of the Disclosure A signal-processing circuit comprises a first gate circuit, a chrominance signal amplifier, a hue control circuit, means for reproducing a composite color signal, an AC coupling capacitor, and a second gate circuit. The first gate circuit receives a composite color signal consisting of chrominance signals and burst signals which are arranged alternately and then extracts the chrominance signals and burst signals from the composite color signal. The extracted chrominance signal is amplified by the chrominance signal amplifier, while the phases of the extracted burst signal is con- trolled by the hue control circuit. The outputs of the chrominance signal amplifier and the hue control circuit are added by said reproducing means, thereby reproducing a composite color signal. The AC coupling capacitor is coupled to the output of said means. The second gate circuit extracts from the output of the AC coupling capacitor chrominance signals and burst signals.

289084

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