发明名称 |
Pointing Device with Optical Positioning on Low-Diffusive Surfaces |
摘要 |
A computer input device includes a light source assembly forming an incident light beam that strikes an area on a surface beneath the input device with large incident angle. A light sensing assembly in the input device is positioned to receive scattered light and includes a band-pass filter. A barrier is located directly above the area where the light beam is incident on the top surface to prevent light from traveling directly from the light source assembly to the light sensing assembly.
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申请公布号 |
US2009002347(A1) |
申请公布日期 |
2009.01.01 |
申请号 |
US20070770069 |
申请日期 |
2007.06.28 |
申请人 |
MICROSOFT CORPORATION |
发明人 |
MING HAI;HUANG WEI;XIE JIANPING;GUI HUAQIAO;ZHAO TIANPENG;XU JUN;KONG YUAN |
分类号 |
G09G3/28 |
主分类号 |
G09G3/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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