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:
Apr. 17, 2012
Filed:
Mar. 14, 2008
Kazuya Imafuku, Kawasaki, JP;
Kazuya Imafuku, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image reading apparatus includes a first image generation unit configured to scan a document set with one edge aligned with a reference position of a document positioning plate to generate a first image, a second image generation unit configured to scan the document set with a second edge, side opposite to the first edge, aligned with the reference position of the document positioning plate to generate a second image, a detection unit configured to perform matching processing to match image data of the first image with image data of the second image to detect an offset between the first image and the second image, and a determination unit configured to determine a size of the document based on the offset detected by the detection unit. The second edge may be opposite the first. Alternatively, corners may be used instead of edges.