Synchronous detectors for television receivers

Details Synchronous detectors for television receivers Synchronous detectors for television receivers

H - Electricity

04

N

350/67

H04N 9/66 (2006.01)

Patent

CA 1176746

RCA 35,065 Abstract of the Disclosure In a color television receiver, the demodulation of modulated color subcarrier waves is effected by a pair of synchronous detectors, respectively responsive to reference waves of quadrature-related phases, to derive first and second color-difference signal outputs. Combining of the first and second color-difference signals in a resistive adding network yields a third color-difference signal. A set of three color signals is formed by a trio of combining circuits, each responsive to a delayed brightness-representative signal and a respectively different one of said color-difference signals.

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