Circuit for indicating antenna signal input level on television receiver screen
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 22, 1980
Grant Date -
N/A
app pub date -
Mar 19, 1979
filing date -
Mar 19, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A circuit for use in a television receiver to obtain a variable-length bar on the television screen which indicates the optimum antenna position, the circuit comprised of at least two monostable multivibrators with input terminals triggered by horizontal and vertical synchronizing pulses and with outputs coupled through an AND circuit to a video/chroma driver amplifier. The pulse length of one of the multivibrators is caused to vary in relation to the strength of an AGC signal in the video signal path of the receiver by coupling the AGC output to the time-constant-determining network of the multivibrator.
First Claim
Family
International Classification(s)
Cited Art Landscape
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