System for the shifting of a television signal scrambler

Details System for the shifting of a television signal scrambler System for the shifting of a television signal scrambler

1996-01-18

1998-12-08

Cangialosi, Salvatore

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

H04L 900

Patent

active

058481575

ABSTRACT:
The shifting system comprises a local scrambler (13) on a production site giving the necessary digital data elements to a scrambler (15) shifted to a transmission site. These data elements are inserted, at the image rate, into the compressed television signal transmitted on a low bit rate link to the transmission site. The application relates to systems for the transmission of encrypted television systems.

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patent: 5606612 (1997-02-01), Griffin et al.
S.R. Ely, et al., "Conditional Access Scrambling Techniques for Terrestrial UHF Television Broadcasts", International Broadcasting Convention, Sep. 23-27, 1988, (pp. 318-322).
Daniel M. Moloney, et al., "Digital Compression in Todays Addressable Environment", 42nd Annual Convention and Exposition of the National Cable Television Association, Jun. 6-9, 1993, (pp. 308-316).

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