Cable television setback decoder automatic control

Details Cable television setback decoder automatic control Cable television setback decoder automatic control

1997-08-20

1999-01-19

Buczinski, Stephen C.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

80 10, H04N 7167

Patent

active

058622195

ABSTRACT:
A setback decoder monitors the IF output from a cable-ready receiver and automatically provides a descrambled audio/video signal back to the receiver for output to the subscriber. When the receiver is tuned to a CATV channel which provides signals in a scrambled format, the decoder detects the scrambled signal, determines whether the subscriber is authorized to view the selected program, and descrambles the signal to provide a descrambled output signal to the receiver. The receiver detects the audio/visual output from the decoder and automatically outputs the audio/visual information to the subscriber.

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