Data compressing system for compressing serial image data with c

Details Data compressing system for compressing serial image data with c Data compressing system for compressing serial image data with c

1990-10-10

1993-03-30

Couso, Jose L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 78, 358 80, 358461, 382 56, H04N 146

Patent

active

051988984

ABSTRACT:
A system for compressing image data composed of monochromatic and color pixels with color information in which the compression efficiency of monochromatic pixels is enhanced. Each pixel includes a color flag having the value "0" if the pixel is monochromatic, "1" if the pixel is color. The remaining bits of each pixel are used for expressing gradation image data. Before applying a pixel to a compressor, if the bits expressing the gradation image data are all "1's", the color flag of "0" is set to "1", and vice versa.

REFERENCES:
patent: 4896208 (1990-01-01), Morita et al.
patent: 4931860 (1990-06-01), Narumiya
patent: 4937662 (1990-06-01), Matsunawa et al.
patent: 4980758 (1990-12-01), Matsunawa et al.
patent: 4980760 (1990-12-01), Hiratsuka et al.

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