US PATENT SUBCLASS 455 / 63
.~ Distortion, noise, or other interference prevention, reduction, or compensation


Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

39  DF  TRANSMITTER AND RECEIVER AT SEPARATE STATIONS {14}
63.~ Distortion, noise, or other interference prevention, reduction, or compensation {2}
64  DF  .~.~> Plasma source or barrier
65  DF  .~.~> Anti-multipath


DEFINITION

Classification: 455/63

Distortion, noise, or other interference prevention, reduction, or compensation:

(under subclass 39) Subject matter with provision for reduction or elimination of distortion, noise, interference, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

8, for failure compensation in a repeater.

10, for fading compensation in repeaters.

78+, for transceivers with transmitter receiver interaction prevention.

119, for transmitters with carrier frequency stabilization.

134, and 135, for plural receivers with output selecting according to signal strength or quality.

222+, for noise controlled squelch in a receiver. 234.1+, for automatic gain or volume control in a receiver.

255+, for local oscillator frequency control in a receiver.

267, for tone control in a receiver.

268, for fidelity control in a receiver.

278.1+, for receiver plural wave collector noise or interference elimination.

283+, for receiver wave collector interference or noise elimination.

296+, for receiver noise or interference elimination.

501+, for similar subject matter in plural transmitter/receiver systems.