Video color subcarrier signal generator

Television – Synchronization – Locking of video or audio to reference timebase

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Details

348539, 348540, H04N 9475

Patent

active

057868662

ABSTRACT:
A color subcarrier signal generator for use e.g, in a video converter measures the average error of the horizontal synchronizing signal frequency. The measured error is used as a compensator signal to control a direct digital synthesizer to generate a correct color subcarrier signal. The direct digital frequency synthesizer includes an address generator receiving the error signal and a look up table driven by the address generator.

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