US PATENT SUBCLASS 329 / 318
.~ Having specific distortion, noise or other interference prevention, reduction or compensation

Current as of: June, 1999
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329 /   HD   DEMODULATORS

315  DF  FREQUENCY MODULATION DEMODULATOR {7}
318.~ Having specific distortion, noise or other interference prevention, reduction or compensation {3}
319  DF  .~.~> Using feedback to reduce distortion, noise or other interference
320  DF  .~.~> By cancelling distortion, noise or other interference
321  DF  .~.~> Using amplitude limiting within the demodulator

DEFINITION

Classification: 329/318

Having specific distortion, noise or other interference prevention, reduction or compensation:

(under subclass 315) Subject matter including the neutralization of an undesirable characteristic of a frequency modulation demodulator or its signals.

SEE OR SEARCH THIS CLASS, SUBCLASS:

349+, for distortion or noise control in an amplitude modulation demodulator.

SEE OR SEARCH CLASS

455, Telecommunications,

63+, and 501+ for noise control in a telecommunication system with separated transmitter and receiver, subclasses 210+ for carrier amplitude modulation elimination in an FM receiver and subclasses 296+ for receiver noise or interference control, particularly subclasses 309 and 312.