Cable television signal scrambling system

Details Cable television signal scrambling system Cable television signal scrambling system

1992-06-22

1993-09-28

Swann, Tod R.

Cryptography

Cryptanalysis

380 8, 380 20, 358167, H04N 7167

Patent

active

052492281

ABSTRACT:
In a cable television system an interferer signal is inserted into the video signal for scrambling purposes except during a vertical blanking reference interval containing a reference signal for use by a video equalizer in a television receiver to help reduce multipath distortion such as image ghosts.

REFERENCES:
patent: 3347982 (1967-10-01), Bass et al.
patent: 4621288 (1986-11-01), Yamada et al.
patent: 4748677 (1988-05-01), Farmer et al.
patent: 4777648 (1988-10-01), Gardner
patent: 4912557 (1990-03-01), Faroudja
patent: 5065242 (1991-11-01), Dieterich et al.
patent: 5133009 (1992-07-01), Rumreich

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