04494142 is referenced by 107 patents and cites 9 patents.

This disclosure is concerned with an improved special program addressable subscription decoding technique in accordance with which ordinary program subscribing decoders continue to receive and decode the scrambled flat rate programs to which they are entitled while being disabled from receiving any of a plurality of special scrambled programs associated with a different control signal that will only enable decoding after pre-set unique address verification has been transmitted, checked and introduced into memory indicative of subscription to particular of such special programs, whereby the special program decoding will be effected compatibly with the continued flat rate program decoding by ordinary program subscribers.

Title
Method of and apparatus for scrambled television program addressable subscription selection and decoding
Application Number
6/323280
Publication Number
4494142
Application Date
November 20, 1981
Publication Date
January 15, 1985
Inventor
Kantilal Mistry
Freehold
NJ, US
Agent
Rines Rines Shapiro and Shapiro
Assignee
Blonder Tongue Laboratories
NJ, US
IPC
H04K 1/04
H04K 1/02
H04N 7/16
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