Gray scale sync video processing system
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United States of America Patent
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-
Oct 13, 1981
Grant Date -
N/A
app pub date -
Jun 8, 1979
filing date -
Jun 8, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The blacker-than-black sync pulse of a standard video signal is replaced by a gray scale sync to increase picture signal, permit audio multiplexing and allow security phase inversion by means of encoder and decoder circuitry including a sync stripper, gate and timing generator, audio processor, phase code generator, color reference regenerator, blank and summing amplifier, and phase reversal amplifier.
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