US PATENT SUBCLASS 348 / 472
.~.~ Pulse code modulation

Current as of: June, 1999
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469  DF  FORMAT {6}
471  DF  .~ Including pulse modulation of video signal (e.g., pulse width, PAM) {1}
472.~.~ Pulse code modulation

DEFINITION

Classification: 348/472

Pulse code modulation:

(under subclass 471) Subject matter wherein the video is quantized into plural bits and the amplitude spikes represent either a one or zero with the absence of a pulse representing the other.