Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1990-08-06
1992-02-25
Buczinski, Stephen C.
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 10, 380 28, 380 47, 380 45, H04L 902, H04N 7167
Patent
active
050919385
ABSTRACT:
An audiovisual subscription system includes means for aperiodically inverting the lines of a transmitted video signal on a frame-by-frame basis and for decrypting encrypted PCM audio information which is transmitted along with the aperiodically inverted video information.
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Hunting C. J.
Phipps William L.
Raynesford Steven J.
Rittmueller Philip H.
Thompson John R.
Buczinski Stephen C.
NEC Home Electronics Ltd.
Ogonowsky Brian D.
Shoup Guy W.
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