Apparatus for scrambling and descrambling a video signal

Details Apparatus for scrambling and descrambling a video signal Apparatus for scrambling and descrambling a video signal

1994-07-18

1996-10-01

Barron, Jr., Gilberto

Cryptography

Key management

Having particular key generator

380 20, H04N 7167

Patent

active

055617131

ABSTRACT:
A scrambler for scrambling a composite video signal comprises a scrambling data generator for generating a number of scrambling data. Each of the scrambling data is added to each of a corresponding number of digitized video data samples converted by an analog-to-digital converter, to thereby generate a scrambled video signal.

REFERENCES:
patent: 4605961 (1986-08-01), Frederiksen
patent: 4636852 (1987-01-01), Farmer
patent: 4646147 (1987-02-01), Kruger
patent: 5177786 (1993-01-01), Kang
patent: 5418853 (1995-05-01), Kanota et al.

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