Community antenna television reception controlling apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 6, 1988
Grant Date -
N/A
app pub date -
Dec 9, 1985
filing date -
Dec 10, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A reception controlling apparatus for a CATV system in which jamming signals are added to the signals sent to each subscriber's terminal unit in such a manner as to accurately jam the designated nonpermitted channels without interfering with the permitted channels. A microcomputer receives data from a broadcast center indicating which subscribers are permitted to view which channels. A jamming signal is generated in a time-division manner and gated onto the lines to the individual subscribers under the control of the microcomputer. The jamming signal is produced by a VCO controlled by the microcomputer. The jamming signal is produced by a VCO controlled by the microcomputer while providing correction to its output frequency.
First Claim
Family
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Cited Art Landscape
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