发明名称 |
Apparatus for detecting a pointer within a region of interest |
摘要 |
An apparatus for detecting a pointer within a region of interest includes at least one pair of imaging devices. The imaging devices have overlapping fields of view encompassing the region of interest. At least one light source provides illumination across the region of interest and is within the field of view of at least one of the imaging device. A filter is associated with the at least one imaging device whose field of view sees the light source. The filter blocks light projected by the light source to inhibit the imaging device from being blinded by the projected light.
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申请公布号 |
US7232986(B2) |
申请公布日期 |
2007.06.19 |
申请号 |
US20040778534 |
申请日期 |
2004.02.17 |
申请人 |
SMART TECHNOLOGIES INC. |
发明人 |
WORTHINGTON STEPHEN;MORRISON GERALD D.;GURTLER PATRICK JAMES |
分类号 |
G06M7/00;G06F3/042;G09G5/00 |
主分类号 |
G06M7/00 |
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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