US PATENT SUBCLASS 375 / 283
.~.~.~ Differential phase shift keying (diphase)

Current as of: June, 1999
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375 /   HD   PULSE OR DIGITAL COMMUNICATIONS

259  DF  SYSTEMS USING ALTERNATING OR PULSATING CURRENT {4}
271  DF  .~ Angle modulation {2}
279  DF  .~.~ Phase shift keying {4}
283.~.~.~ Differential phase shift keying (diphase)

DEFINITION

Classification: 375/283

Differential phase shift keying (diphase):

(under subclass 279) Subject matter where the reference phase is the phase used to transmit the previous data pulse.

SEE OR SEARCH THIS CLASS, SUBCLASS:

244, for differential pulse code modulation.

330, for differential phase shift keyed receivers.