3882392 is referenced by 102 patents and cites 8 patents.

A subscription TV system includes a central station, various TV receivers and cable connections between the central station and receivers. There are means at each receiver for decoding TV signals received from the central station. Also at each receiver is a means for placing the decoder in operation in response to authorization signals from the central station. The clock which coordinates the central station and receiver authorization signal transmitting and receiving means uses local power line frequency as a base.

Title
Hotel-motel pay TV system
Application Number
05/327,582
Publication Number
3882392
Application Date
January 29, 1973
Publication Date
May 6, 1975
Inventor
Harney Ralph P
Agent
Kinzer Plyer Dorn & McEachran
Assignee
Oak
IPC
H04k 01/00
H04N 07/16
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