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.

Date of Patent:
Oct. 16, 1984

Filed:

Apr. 25, 1983
Applicant:
Inventors:

David A Clark, Streamwood, IL (US);

David C Strong, Lynwood, IL (US);

Thomas Q White, II, Chicago, IL (US);

Assignee:

R. R. Donnelley & Sons Company, Chicago, IL (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03F / ;
U.S. Cl.
CPC ...
358 80 ; 358 78 ;
Abstract

An apparatus for converting a color image from one color space to another color space includes a memory in which is stored a finite number of output signals which represent colors in the output space and which is addressed by signals representing a color in the input space. In order to derive an output color value for an input color located between colors stored in the memory, an interpolation process is utilized. The interpolation process takes into account the four closest color values in the memory above and below the input color and develops an interpolated output color value from vectors derived from the four color values.


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Clark, David. (1984). Method of color conversion with improved interpolation (U.S. Patent No. 4477833). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4477833

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