US PATENT SUBCLASS 375 / 320
.~ Amplitude modulation

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

316  DF  RECEIVERS {9}
320.~ Amplitude modulation {1}
321  DF  .~.~> Single or vestigial sideband or suppressed carrier

DEFINITION

Classification: 375/320

Amplitude modulation:

(under subclass 316) Subject matter wherein the receiver extracts a modulating signal from an input AM signal whose amplitude of a carrier varies over a continuum of values in accordance with the modulating signal.