05206722 is referenced by 177 patents and cites 5 patents.

VOD services are provided by providing at each subscriber location a switching apparatus (e.g., 23 of FIG. 2) which is remotely controlled from the head end (12) of the system. A set top box of each subscriber is provided with a single channel designation (X) for VOD reception. In response to a request from a subscriber for a particular TV program at a specified time, the provider at the head end actuates the switching apparatus (23) to permit the set top box to be tuned to a specified channel that corresponds to a channel upon which the requested VOD program will be transmitted. Then, when the subscriber selects on his set top box the single VOD channel designation (X), the set top box is capable of receiving the requested TV program on the specific TV channel of the transmission line (11) that has been designated for it by the provider at the head end.

Title
Remote channel switching for video on demand service
Application Number
7/635044
Publication Number
5206722
Application Date
December 28, 1990
Publication Date
April 27, 1993
Inventor
Shue Yu Kwan
Parsippany
NJ, US
Agent
R B Anderson
Assignee
AT&T Bell Laboratories
NJ, US
IPC
H04H 1/02
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