Digital signal processing apparatus

Details Digital signal processing apparatus Digital signal processing apparatus

1995-05-03

1996-05-28

Buczinski, Stephen C.

Cryptography

Key management

Having particular key generator

380 5, 380 14, 380 20, H04N 7167

Patent

active

055219780

ABSTRACT:
Digital signal processing apparatus in which compressed frequency components of a digital signal are processed to selectively achieve fade-in, fade-out and scene change effects and where the digital signal is scrambled (and subsequently descrambled) in whole or in part by scrambling (or descrambling) selected compressed frequency components of the digital signal.

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patent: 5062136 (1991-10-01), Gattis et al.
patent: 5285470 (1994-02-01), Schreiber
patent: 5285497 (1994-02-01), Thatcher
patent: 5377266 (1994-12-01), Katta et al.
patent: 5418853 (1995-05-01), Kanota et al.
Patent Abstracts of Japan vol. 16, No. 340 (E-1238) 23 Jul. 1992 & JP-A-04 103 271 (Nippon Hoso Kyokai) 6 Apr. 1992.
Patent Abstracts of Japan vol. 14, No. 51 (E-881) 30 Jan. 1990 & JP-A-01 278 183 (Canon Inc.) 8 Nov. 1989.
Patent Abstracts of Japan vol. 16, No. 344 (E-1239) 24 Jul. 1992 & JP-A-04 105 475 (Canon Inc.) 7 Apr. 1992.

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