US PATENT SUBCLASS 375 / 248
.~.~.~ Nonamplitude delta (area, etc.)

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

242  DF  PULSE CODE MODULATION {4}
244  DF  .~ Differential {3}
247  DF  .~.~ Single bit (delta) {3}
248.~.~.~ Nonamplitude delta (area, etc.)

DEFINITION

Classification: 375/248

Nonamplitude delta (area, etc.):

(under subclass 247) Subject matter where whether a pulse is sent or not is determined by a criteria other than the amplitude difference of the sampled and locally decoded waveforms.