US PATENT SUBCLASS 358 / 426
.~ Time or bandwidth compression

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

400  DF  FACSIMILE {17}
426.~ Time or bandwidth compression {7}
261.1  DF  .~.~> Run length encoding {4}
262.1  DF  .~.~> Two level to three level
428  DF  .~.~> Interpolation
429  DF  .~.~> Halftone or grey level processing
430  DF  .~.~> Adaptive or predictive
431  DF  .~.~> Fill bits or dummy signal
432  DF  .~.~> Two dimensional or orthogonal {1}

DEFINITION

Classification: 358/426

Time or bandwidth compression:

(under subclass 400) Subject matter wherein the frequency range of the picture signal is reduced to accommodate bandwidth limitations of a transmission medium or wherein the time required to transmit a given amount of information through a given fixed bandwidth medium is reduced.

SEE OR SEARCH CLASS

348, Television,

384+, for bandwidth reduction techniques in television systems.

370, Multiplex Communications,

477, for bandwidth compression or expansion in multiplex communications.

375, Pulse or Digital Communications,

240+, for bandwidth compression or expansion in pulse communications. 382, Image Analysis,

232+, for data compression in image analysis systems.

704, Data Processing: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression,

500, 504 for bandwidth, or time compression, or expansion of audio signals.