Telecommunications – Wireless distribution system
Patent
1980-06-18
1983-10-04
Chin, Tommy P.
Telecommunications
Wireless distribution system
455 67, 358 86, 340505, 34082508, H04B 346
Patent
active
044083459
ABSTRACT:
A remote line monitoring device and method for a CATV system in which a center facility is connected to plural terminal units through cables of the system to transmit television signals to subscribers' homes. A plurality of monitoring terminal units are provided along various points of the interconnecting cables. Each of the monitoring terminal units is identified by an unique address. To determine conditions throughout the system, a central monitoring system transmits polling signals on the cables. If an address contained within the polling signals matches with a prestored identifying address, a monitoring terminal unit responds by transmitting data produced by monitoring converter units back to the center facility. The center facility can then display the data or produce indications identifying problems along the cables.
REFERENCES:
patent: 3668307 (1972-06-01), Face
patent: 3733430 (1973-05-01), Thompson
patent: 4025851 (1977-05-01), Haselwood et al.
patent: 4090220 (1978-05-01), Gargini
The Total Communication Concept for the Future, by Gargini, The Royal Television Society Journal, Mar./Apr., 1973, pp. 182-193.
Tabata Toshio
Yashiro Kenji
Chin Tommy P.
Pioneer Electronic Corporation
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