US PATENT SUBCLASS 348 / 737
.~ Intercarrier circuits

Current as of: June, 1999
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348 /   HD   TELEVISION

725  DF  RECEIVER CIRCUITRY {10}
737.~ Intercarrier circuits

DEFINITION

Classification: 348/737

Intercarrier circuits:

(under subclass 725) Subject matter including apparatus at the receiver to produce a frequency modulated signal whose center frequency is equal to the difference between the carrier frequency of an amplitude modulated carrier and a frequency modulated carrier.