发明授权
- 专利标题： Cursor controlling apparatus and its direction detection method
- 专利标题（中）： 光标控制装置及其方向检测方法
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申请号： US270012申请日： 1994-07-01
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公开(公告)号： US5748181A公开(公告)日： 1998-05-05
- 发明人: Alex Fu , David Wang , Chris Wu
- 申请人： Alex Fu , David Wang , Chris Wu
- 申请人地址： TWX Taipei Hsien
- 专利权人： Primax Electronics Ltd.
- 当前专利权人： Primax Electronics Ltd.
- 当前专利权人地址： TWX Taipei Hsien
- 主分类号： G06F3/033
- IPC分类号： G06F3/033 ; G09G5/08
摘要：
The present invention is related to a method used in a cursor controlling apparatus for detecting a direction a cursor should move on a monitor which comprises steps of: intermittently receiving a light to obtain a series of different optical quantities; generating a series of voltage signals respectively responsive to the series of optical quantities; and determining a direction by detecting a sequence of the voltage signals. The present invention can reduce manufacturing cost, economize assembling time, and obtain a more accurate direction.
公开/授权文献
- US6102695A Dentistry handpiece 公开/授权日：2000-08-15
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