US PATENT SUBCLASS 358 / 455
.~.~.~ Gray level processing

Current as of: June, 1999
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358 /   HD   FACSIMILE AND STATIC PRESENTATION PROCESSING

400  DF  FACSIMILE {17}
443  DF  .~ Specific signal processing circuitry {7}
448  DF  .~.~ Image processing {12}
455.~.~.~ Gray level processing {2}
456  DF  .~.~.~.~> Halftone {4}
461  DF  .~.~.~.~> Shade correction

DEFINITION

Classification: 358/455

Gray level processing:

(under subclass 448) Subject matter wherein the image signal is processed to reproduce various levels of gray.