System and method for scrambling and/or descrambling a video signal

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United States of America Patent

PATENT NO 5185794
SERIAL NO

07764568

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Abstract

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An audiovisual subscription system includes means for aperiodically inverting the lines of a transmitted video signal on a frame-by-frame basis and for decrypting encrypted PCM audio information which is transmitted along with the aperiodically inverted video information.

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Patent Owner(s)

Patent OwnerAddress
NEC CORPORATION OF AMERICA2890 SCOTT BOULEVARD SANTA CLARA CA 95050

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hunting, C J Altadena, CA 5 327
Phipps, William L Bermuda Dunes, CA 6 337
Raynesford, Steven J Cathedral City, CA 14 391
Rittmueller, Philip H St. Charles, IL 7 445
Thompson, John R La Quinta, CA 49 2164

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