Television video signal scrambling system

Details Television video signal scrambling system Television video signal scrambling system

1980-03-07

1981-12-29

Buczinski, S. C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358114, H04N 716

Patent

active

043085563

ABSTRACT:
A video signal scrambling system for use with a pay television system in which video signals are scrambled so that only specified subscribers can receive the program. Inversion of the video signal level for scrambling is performed only when the average gradation of the video signals varies relatively largely so that flickering is eliminated from the reproduced picture.

REFERENCES:
patent: 4022972 (1977-05-01), Pires

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