Color television signal sampling clock phase control system

Details Color television signal sampling clock phase control system Color television signal sampling clock phase control system

H - Electricity

04

N

350/68

H04N 11/04 (2006.01) H04N 7/56 (2006.01) H04N 9/44 (2006.01)

Patent

CA 1294701

Abstract of the Disclosure A sampling clock phase control system includes, at a transmitter side, a circuit for generating a first phase reference signal phase-locked with a color burst of an input color television signal, and a multiplexer for multiplexing the color television signal encoded by a first sampling clock and the first phase reference signal and outputting the multiplexed signal to a channel. The control system includes, at a receiver side, a circuit for generating a second phase reference signal phase-locked with a color burst of a decoded color television signal, a phase comparator for comparing the phases of the first and second phase reference signals, and a circuit which is feedback-controlled by an output signal from the phase comparator and generates a sampling clock for D/A-converting a decoded reception signal.

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