Dynamic relocation of the service data channel

Details Dynamic relocation of the service data channel Dynamic relocation of the service data channel

1996-11-12

1999-02-09

Buczinski, Stephen C.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

348467, H04N 7167, H04N 700

Patent

active

058704728

ABSTRACT:
A method and apparatus for preventing unauthorized descrambling of cable programming includes selective relocation of the service data channel within the vertical blanking interval thereby preventing unauthorized descrambling of programming by conventional descramblers.

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