Remote disconnect-reconnect tap for cable television systems

Details Remote disconnect-reconnect tap for cable television systems Remote disconnect-reconnect tap for cable television systems

1974-07-05

1976-10-19

Griffin, Robert L.

Telegraphy

Systems

Printing

325 37, 325 31, 178DIG13, H04B 304

Patent

active

039873986

ABSTRACT:
A remotely controlled disconnect-reconnect tap for a cable television system having a head end feeding a cable distribution system. The tap comprises means for receiving and detecting a plurality of pairs of tones modulated on a carrier and sent over the cable distribution system from the head end, means responsive to a predetermined sequence of said pairs of tones for developing a control signal, and switch means responsive to the control signal which turns off if already on or on if already off to thereby disconnect or reconnect, respectively, a subscriber to the cable distribution system.

REFERENCES:
patent: 3423521 (1969-01-01), Friesen et al.
patent: 3531586 (1970-09-01), Bass et al.
patent: 3757225 (1973-09-01), Ulicki
patent: 3790700 (1974-02-01), Callais et al.
patent: 3803491 (1974-04-01), Osborn
patent: 3852537 (1974-12-01), Vincent
patent: 3899633 (1975-08-01), Sorenson et al.

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