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:
Oct. 11, 2005
Filed:
Oct. 26, 2001
Applicants:
Nobuhito Matsushiro, Tokyo, JP;
Yukio Endo, Tokyo, JP;
Inventors:
Nobuhito Matsushiro, Tokyo, JP;
Yukio Endo, Tokyo, JP;
Assignee:
Oki Data Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K009/00 ;
U.S. Cl.
CPC ...
Abstract
A method for obtaining spectral sensitivity characteristics of a color image input device such as a color scanner or a like is provided. The most optimum spectral sensitivity characteristics of the color image input device can be obtained by amending CIE XYZ color matching functions so that X, Y and Z values of two color stimuli perceived to be the same in color by observation under a specific illuminant are made equal and by performing linear transformation on the amended color matching function.