发明授权
- 专利标题： Coordinate input apparatus, its control method, and program
- 专利标题（中）： 坐标输入装置，其控制方法和程序
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申请号： US11076357申请日： 2005-03-09
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公开(公告)号： US07443387B2公开(公告)日： 2008-10-28
- 发明人: Atsushi Tanaka , Yuichiro Yoshimura , Katsuyuki Kobayashi , Kiwamu Kobayashi , Hajime Sato , Masahide Hasegawa
- 申请人： Atsushi Tanaka , Yuichiro Yoshimura , Katsuyuki Kobayashi , Kiwamu Kobayashi , Hajime Sato , Masahide Hasegawa
- 申请人地址： JP Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JP Tokyo
- 代理机构： Cowan, Liebowitz & Latman, P.C.
- 优先权： JP2004-069483 20040311
- 主分类号： G06F3/041
- IPC分类号： G06F3/041
摘要：
A signal change range, which is generated due to a pointing operation of a pointer on a coordinate input region, with respect to an initial detection signal distribution of a detection unit in an initial state in which no pointing operation is made on the coordinate input region, is specified. End portion information of the specified signal change range is detected. Coordinates of the pointed position of the pointer are calculated using at least one of a plurality of pieces of detected end portion information.
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