Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1991-11-19
1993-07-27
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
341 67, 358 86, 358135, 358136, H04N 713, H04N 7133, H04N 7137
Patent
active
052314855
ABSTRACT:
A method and apparatus is disclosed wherein fixed rate vector quantized data is transmitted from a first location to a second location via a first medium. The fixed rate vector quantized data is received at the second location and transformed to variable rate vector quantized data. Then, the transformed variable rate vector quantized data is transmitted to a third location via a second medium. At the third location, the variable rate vector quantized data may be received, and if desired, transformed back to fixed rate form. A distortion adaptive vector quantization method is employed to transform the fixed rate vector quantization data to variable rate vector quantization data.
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Israelsen Paul D.
Lucas Keith
Britton Howard W.
Scientific-Atlanta, Inc.
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