US PATENT SUBCLASS 332 / 126
.~.~ Automatic frequency stabilization or control

Current as of: June, 1999
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332 /   HD   MODULATORS

117  DF  FREQUENCY MODULATOR {6}
123  DF  .~ Including stabilization or alternatively distortion, noise or other interference prevention, reduction, or compensation {3}
126.~.~ Automatic frequency stabilization or control {1}
127  DF  .~.~.~> Phase or frequency locked loop {1}

DEFINITION

Classification: 332/126

Automatic frequency stabilization or control:

(under subclass 123) Subject matter in which undesired signal frequency variations are controlled without human intervention.

(1) Note. Often the frequency being controlled is that of the unmodulated carrier.

SEE OR SEARCH THIS CLASS, SUBCLASS:

161, for frequency control in an amplitude modulator.

SEE OR SEARCH CLASS

331, Oscillators,

1+, for automatic frequency control of an oscillator.

455, Telecommunications, 75+, for frequency stabilization in a transceiver, subclass 113 for frequency control of a frequency modulated transmitter and subclass 119 for stabilizing the carrier frequency in a telecommunications transmitter.