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:
May. 12, 2009
Filed:
Aug. 31, 2005
Yasunori Ake, Nara, JP;
Tomohiko Yamamoto, Nara, JP;
Yasunori Ake, Nara, JP;
Tomohiko Yamamoto, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A coordinate input system includes: a digitizer for indicating coordinate positions; a controller for extracting a plurality of coordinate data units from the indicated coordinate positions; a temporary storage memory for sequentially storing the extracted coordinate data units; a cosine value deriving section for defining vectors each connecting two of points associated with the respective coordinate data units and for deriving a cosine value of an angle formed by adjacent two of the vectors sandwiching a point selected from the points; and a control circuit for discarding one of the coordinate data units associated with the selected point when the cosine value is smaller than a given value and for transmitting and inputting one of the coordinate data units associated with the selected point when the cosine value is equal to or larger than the given value.