发明授权
- 专利标题： Coordinate input apparatus and control method and program therefor
- 专利标题（中）： 协调输入装置及其控制方法及程序
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申请号： US09900065申请日： 2001-07-06
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公开(公告)号： US06900791B2公开(公告)日： 2005-05-31
- 发明人: Atsushi Tanaka , Katsuyuki Kobayashi
- 申请人： Atsushi Tanaka , Katsuyuki Kobayashi
- 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： Morgan & Finnegan, LLP
- 优先权： JP2000-206795 20000707; JP2000-239107 20000807; JP2000-250851 20000822; JP2001-154284 20010523
- 主分类号： G06F3/041
- IPC分类号： G06F3/041 ; G06F3/033 ; G06F3/042 ; G09G5/00 ; G09G5/08
摘要：
A light irradiated on a coordinate input screen from a pointing device is detected, and pieces of output information obtained as detection results for light at least at three known positions including first to third positions are stored. The coordinate values of the light formed on the coordinate input screen are calculated using at least two of the stored pieces of output information at the first to third positions.
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