Cable television communication system with passive sensor signal path and a subscriber power supply source
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 2, 1988
Grant Date -
N/A
app pub date -
May 30, 1985
filing date -
May 30, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cable television system includes security means. A security sensor is provided a subscriber's house and when it generates an emergency signal a transmission path is formed by non-active elements from the security sensor to a trunk cable. An external control unit has a checking function of a power supplying state to the security sensor. The external control unit can communicate with a central station with respect to power source conditions of subscribers.
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Family
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