US PATENT SUBCLASS 327 / 147
.~.~.~.~ 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}
144  DF  .~.~ Using multiple clocks {5}
146  DF  .~.~.~ With feedback {1}
147.~.~.~.~ Phase lock loop {3}
148  DF  .~.~.~.~.~> With charge pump
149  DF  .~.~.~.~.~> With variable delay means
150  DF  .~.~.~.~.~> With digital element

DEFINITION

Classification: 327/147

Phase lock loop:

(under subclass 146) 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:

155+, for phase lock loop type feedback synchronizing, in general.