Title: Method of and apparatus for establishing emergency communications in a two-way cable television system

Abstract: In a two-way cable television communications system wherein a central or master station is coupled to a plurality of remote stations through a coaxial cable network, each remote unit is provided with means for decoding an emergency alert transmission signal from the master station to generate an internal signal to sound an annunciator, alerting a subscriber or viewer at the remote station that an emergency communication is forthcoming, switching on a television receiver at the remote station, if the television receiver is not on, and tuning the television receiver through a converter to a predetermined television channel to condition the television receiver to receive emergency communications from the master station.

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Inventors: Belcher, Brian E. (Dallas, TX, US)
Cambell, John G. (Irving, TX, US)

Application Number: 571536
Filing Date: 1975-04-25
Publication_date: 1976-11-23
Assignee: TOCOM, Inc. (Dallas, TX)
Primary Class(es): 725/33 340/288, 455/526
Other Classes:
US Patent Ref:

3796829	Mar, 1974	Gray	325/308.
3886538	May, 1975	Takeuchi	340/310.

Other Refs:
Primary Examiner: Habecker, Thomas B.
Assistant Examiner:
Attorney: Clegg, Jr.; Giles C.