The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 30, 1993
Filed:
Oct. 10, 1990
Applicant:
Inventor:
Masahiko Miyata, Kanagawa, JP;
Assignee:
Fuji Xerox Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358 75 ; 358 78 ; 358 80 ; 358461 ; 382 56 ;
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.