US PATENT SUBCLASS 375 / 374
.~.~.~ With charge pump or up and down counters

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

354  DF  SYNCHRONIZERS {7}
371  DF  .~ Phase displacement, slip or jitter correction {2}
373  DF  .~.~ Phase locking {3}
374.~.~.~ With charge pump or up and down counters

DEFINITION

Classification: 375/374

With charge pump or up and down counters:

(under subclass 373) Subject matter including a means for controlling the voltage which applied to the voltage control oscillator (VCO) as to change the frequency of the phase lock loop.