Television transmitter having amplification modules in which one component of r.f. signal is obtained by modulating another component and the r.f. signal components are combined after amplification
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United States of America Patent
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-
Jul 28, 1992
Grant Date -
N/A
app pub date -
Sep 27, 1990
filing date -
Oct 3, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a television transmitter having separate picture- and sync-modulated r.f. amplification, the sync-modulated r.f. signal is derived from the picture-modulated signal using a modulator controlled by the video sync signal conventionally present in the transmitter. This simplifies the construction of the transmitter, and is particularly applicable to solid-state amplifier transmitters.
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