US PATENT SUBCLASS 370 / 525
.~.~.~ Digital tone signal generation

Current as of: June, 1999
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370 /   HD   MULTIPLEX COMMUNICATIONS

464  DF  COMMUNICATION TECHNIQUES FOR INFORMATION CARRIED IN PLURAL CHANNELS {9}
498  DF  .~ Combining or distributing information via time channels {17}
522  DF  .~.~ Signaling (ancillary to main information) {6}
525.~.~.~ Digital tone signal generation

DEFINITION

Classification: 370/525

Digital tone signal generation:

(under subclass 522) Subject matter including a generator which creates an encoded binary signal representation of a tone or a wave signal.