US PATENT SUBCLASS 380 / 11
.~.~ Variable time delay modulation of baseband video signal

Current as of: June, 1999
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380 /   HD   CRYPTOGRAPHY

9  DF  ELECTRIC SIGNAL MODIFICATION (E.G., SCRAMBLING) {18}
10  DF  .~ Video {10}
11.~.~ Variable time delay modulation of baseband video signal

DEFINITION

Classification: 380/11

Variable time delay modulation of baseband video signal:

(under subclass 10) Subject matter which encrypts a picture signal before carrier modulation by application of varying amounts of time delay.

(1) Note. This and indented subclasses also include time shifting between video information and synchronizing signals.

SEE OR SEARCH THIS CLASS, SUBCLASS:

35, for encryption of other than picture signals by variable time delay modulation.