US PATENT SUBCLASS 375 / 330
.~.~.~ Differential (diphase)

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

316  DF  RECEIVERS {9}
322  DF  .~ Angle modulation {4}
329  DF  .~.~ Phase shift keying {3}
330.~.~.~ Differential (diphase) {1}
331  DF  .~.~.~.~> More than two phases

DEFINITION

Classification: 375/330

Differential (diphase):

(under subclass 329) Subject matter in which the bit interval representing one of the two binary levels is formed by a change in the phase of the received signal relative to the preceding bit interval, and the bit interval representing the other of the two binary levels is formed by the absence of a change of phase of the received signal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

283, for diphase systems.