Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1996-08-30
1999-08-10
Coles, Edward L.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
395115, 395116, 358456, 358466, 348715, 348716, G06F 1500, H04N 140, H04N 964
Patent
active
059371463
ABSTRACT:
A binarization processing apparatus for converting multi-value image data into binary image data is constructed by pixel groups in which pixels to be binarized are divided into a plurality of groups, a plurality of memories which correspond to the pixel groups and hold data in a binarization processing step, a control unit which performs the reading operation for one of the plurality of memories and simultaneously performs the writing operation for the other memory, and a unit for performing the converting process on the basis of an error diffusing method. The plurality of memories have a single common input/output port.
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Furuya Atsushi
Tateno Tetsuya
Canon Kabushiki Kaisha
Coles Edward L.
Wallerson Mark
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