Remote disconnect-reconnect tap for cable television systems
First Claim
1. A remotely controlled disconnect-connect system for a cable television distribution system having a head end feeding a cable distribution system, the disconnect-connect system including a plurality of taps disposed at diverse locations along the cable distribution system and connected to a plurality of television receivers, said taps being remote from said television receivers, each tap comprising means for receiving and detecting a time sequence of digit representing signals forming a multi-digit identification code number, each of said digit-representing signals comprising a pair of tones modulated on a carrier and sent over the cable distribution system from the head end, means solely responsive to the receipt of the particular sequence of said digit-representing signals forming a predetermined multi-digit identification code associate with said tap for developing an internal control signal, and switch means to connect the cable distribution system and a subscriber'"'"'s television receiver responsive to said internal control signal to turn "off" if already "on" or "on" if already "off" to thereby disconnect or connect, respectively, said receiver to the cable distribution system.
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Accused Products
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.
151 Citations
11 Claims
- 1. A remotely controlled disconnect-connect system for a cable television distribution system having a head end feeding a cable distribution system, the disconnect-connect system including a plurality of taps disposed at diverse locations along the cable distribution system and connected to a plurality of television receivers, said taps being remote from said television receivers, each tap comprising means for receiving and detecting a time sequence of digit representing signals forming a multi-digit identification code number, each of said digit-representing signals comprising a pair of tones modulated on a carrier and sent over the cable distribution system from the head end, means solely responsive to the receipt of the particular sequence of said digit-representing signals forming a predetermined multi-digit identification code associate with said tap for developing an internal control signal, and switch means to connect the cable distribution system and a subscriber'"'"'s television receiver responsive to said internal control signal to turn "off" if already "on" or "on" if already "off" to thereby disconnect or connect, respectively, said receiver to the cable distribution system.
Specification