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. 07, 2008
Filed:
Mar. 09, 2005
Katsuyuki Kobayashi, Yokohama, JP;
Yuichiro Yoshimura, Yokohama, JP;
Atsushi Tanaka, Fuchu, JP;
Kiwamu Kobayashi, Yokohama, JP;
Hajime Sato, Yokohama, JP;
Masahide Hasegawa, Yokohama, JP;
Katsuyuki Kobayashi, Yokohama, JP;
Yuichiro Yoshimura, Yokohama, JP;
Atsushi Tanaka, Fuchu, JP;
Kiwamu Kobayashi, Yokohama, JP;
Hajime Sato, Yokohama, JP;
Masahide Hasegawa, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Angle information corresponding to a specified point is calculated on the basis of a change in light amount distribution obtained from at least two sensor units which are arranged on the corner portions of a coordinate input region and receive incoming light. The coordinates of a pointed position on the coordinate input region are calculated on the basis of the calculated angle information. Each of the at least two sensor units includes two light-receiving units being first and second light-receiving units.