US PATENT SUBCLASS 327 / 156
.~.~.~ Phase lock loop


Current as of: June, 1999
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327 /   HD   MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS

100  DF  SIGNAL CONVERTING, SHAPING, OR GENERATING {29}
141  DF  .~ Synchronizing {7}
155  DF  .~.~ With feedback {1}
156.~.~.~ Phase lock loop {3}
157  DF  .~.~.~.~> With charge pump
158  DF  .~.~.~.~> With variable delay means
159  DF  .~.~.~.~> With digital element


DEFINITION

Classification: 327/156

Phase lock loop:

(under subclass 155) Subject matter wherein a circuit compares the phase of the output signal with a reference signal and converts any difference into a correction voltage that changes the phase of the output so it matches that of the reference or input signal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

147+, for phase lock loop type feedback synchronizing using

multiple clocks.