Video sync signal slicing using variable gain control

Details Video sync signal slicing using variable gain control Video sync signal slicing using variable gain control

1997-02-24

1999-02-02

Grant, Chris

Television

Synchronization

Sync separation

348532, H04N 508

Patent

active

058672222

ABSTRACT:
A video sync slicing circuit is disclosed that employs an adjustable gain control (AGC) amplifier and circuitry that adjusts a gain of the AGC amplifier such that a blanking level of the video signal at an output of the AGC amplifier equals a blanking reference voltage. The slicing circuit includes a circuit that triggers a composite sync signal when a sync pulse of the video signal equals the fifty percent slicing level.

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patent: 4860100 (1989-08-01), Rakhodai et al.
patent: 4918525 (1990-04-01), Vladkov

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