Cryptography – Key management – Having particular key generator
Patent
1983-06-24
1996-09-03
Buczinski, Stephen C.
Cryptography
Key management
Having particular key generator
380 15, 380 19, 380 20, H04N 7167
Patent
active
055531415
ABSTRACT:
A video signal is encrypted by pseudo-random variation of portions of lines thereof to be horizontally scanned that are devoid of video information. Thus, the durations of line blanking intervals may be varied. The variation is done in accordance with an encryption keys which is employed at the receiver to decrypt the encrypted video signal.
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Lowry John D.
Lucas Keith
Buczinski Stephen C.
Scientific-Atlanta, Inc.
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