Remote programming of CATV channel authorization unit

Details Remote programming of CATV channel authorization unit Remote programming of CATV channel authorization unit

1986-08-19

1988-12-20

Buczinski, Stephen C.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

358349, 380 10, 455 4, H04N 7167

Patent

active

047929723

ABSTRACT:
Method and apparatus is disclosed for programming a CATV channel authorization unit. In a cable television (CATV) system, a CATV transmitter provides a plurality of CATV system channels to a channel authorization unit which in turn supplies only selected ones of the system channels to a user. The CATV authorization unit determines which selected channels the user will receive by receiving channel authorization data from a CATV system programmer. The channel authorization data is received via an infrared data communication link such that programming can be done without physical disassembly of the CATV channel authorization unit and without the system programmer being physically present within the users household. In a further embodiment, the CATV channel authorization unit is also responsive to a user transmitter for determining which of the selected channels the user is presently viewing.

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