Apparatus for preventing video tape duplication
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United States of America Patent
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-
Jul 15, 1980
Grant Date -
N/A
app pub date -
Dec 26, 1978
filing date -
Dec 26, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A video processor is disclosed wherein each vertical sync pulse of a composite video signal is shifted to an intermediate amplitude a predetermined time period after the leading edge thereof, to defeat the synchronizing circuits of video tape recorders operating in the recording mode.
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