Television signal distribution equipment for a cable network and including a stabilizer
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United States of America Patent
Stats
-
Aug 23, 1983
Grant Date -
N/A
app pub date -
Sep 23, 1980
filing date -
Jul 18, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A TV distribution equipment includes at least one stabilizer (1) associated with a signal processing circuit (2A) suitable for transmitting TV signals to one channel of a cable TV network. The synchronizing signals in said one channel are subject to interference which may be external (e.g. received on the air from a nearly TV transmitter) or internal (e.g. intermodulation from other signal processing equipments 2B, 2C, 2D). The stabilizer (1) includes a frequency comparator (10) and a phase comparator (28) connected in parallel with their inputs arranged to receive a first signal from the associated signal processing circuit (2A) and a second signal representative of the interfering synchronizing signal. The outputs of the comparators are combined to control the frequency of a local oscillator that governs the synchronizing signals produced by the one processing circuit (2A).
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Family
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Cited Art Landscape
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