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:
Aug. 21, 2012
Filed:
Sep. 04, 2009
Akihiro Yoshitani, Yokohama, JP;
Akihiro Yoshitani, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image-reading apparatus that reads an image of an original includes an array sensor including photoelectric-conversion elements linearly arranged; an optical system configured to form the image of the original onto the array sensor; a signal-processing circuit configured to convert outputs of the array sensor into digital signals and sequentially output pixel values of pixels that constitute a line; a sample-rate converter configured to sequentially receive the pixel values of the pixels that constitute the line output from the signal-processing circuit, convert spatial sample intervals of the line, and output the resultant pixel values; a data table created by reflecting aberration characteristics of the optical system therein; and a controller configured to control the sample-rate converter using data in the data table.