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. 01, 2005
Filed:
Feb. 06, 2002
Applicants:
Katsuyuki Kobayashi, Kanagawa, JP;
Yuichiro Yoshimura, Kanagawa, JP;
Hajime Sato, Kanagawa, JP;
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G005/00 ; G08C021/00 ;
U.S. Cl.
CPC ...
Abstract
A signal waveform detection circuit detects the three-dimensional coordinate value of an indicating tool which is defined in the first, second, and third dimensions. An arithmetic control circuit compares the coordinate value in the first dimension of the three-dimensional coordinate value with a predetermined value, and controls outputting of the coordinate values in the second and third dimensions on the basis of the comparison result.