Television signal detection apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 15, 1994
Grant Date -
N/A
app pub date -
Nov 4, 1991
filing date -
May 3, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus and method for detecting and logging video outputs from a central control unit to one or more television receivers in which a remote unit in or in proximity to the or each television receiver detects by means of a tuned circuit the horizontal synchronization signal frequency of the receiver; the detected signal is modulated and fed to the central control unit where it is demodulated to produce a signal corresponding to the phase of the receiver horizontal synchronization signal characteristic of that receiver, the phase of the time synchronization signal of each of a plurality of video players is compared with the phase of the fed receiver signal to obtain a match; and a microprocessor logs the matched signals.
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Family
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Cited Art Landscape
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