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:
Jul. 09, 2002
Filed:
May. 03, 1999
Chuan-Yu Hsu, Hsin-Chu Hsien, TW;
Chen-Ho Lee, Yun-Lin Hsien, TW;
UMX Data Systems Inc., Hsin-Chu, TW;
Abstract
The present invention provides a color image scanning method of a color image scanner. The scanner comprises three light sources for emitting three different colored lights to illuminate a document to be scanned, and a scanning module for scanning the lights transmitted from the document to generate scanned color image signals of the document. The method comprises: (1) using each of the three light sources and the scanning module to scan a color calibration document to obtain three sets of scanned color image signals of the color calibration document, where three sets of final color image signals of the color calibration document are known, (2) using the three sets of scanned color image signals and final color image signals of the color calibration document to calculate three sets of color calibration parameters for calibrating the three light sources, each set of color calibration parameters comprising three color calibration parameters for calibrating the three light sources to obtain one set of final color image signals, and (3) using each of the three sets of color calibration parameters to adjust the three light sources when scanning the document so as to obtain three sets of final color image signals of the document.