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. 21, 2006
Filed:
Aug. 07, 2001
Masashi Honda, Yokohama, JP;
Masashi Honda, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Abstract
Image data provided from a scanner is simultaneously supplied to page memory and a reference value calculating section. The reference value calculating section creates a density histogram of the document image on the basis of image data corresponding to a predetermined number of image lines and calculates a set of correction reference values for pixel density correction using the density histogram. A range correcting section corrects pixel density indicated by the image data on all the image data read out from the page memory by using the set of correction reference values. The predetermined number of image lines is a fraction of all the image lines of the document image read by the scanner.