发明名称 |
APPARATUS FOR CONTROLLING THE POSITION OF A SCREEN POINTER WITH LOW SENSITIVITY TO PARTICLE CONTAMINATION |
摘要 |
An apparatus for controlling the position of a screen pointer includes an at least partially coherent light source for illuminating an imaging surface, thereby generating reflected images. The apparatus includes a navigation sensor for generating digital images based on the reflected images, performing a movement computation based on the digital images, generating movement data based on the movement computation that is indicative of relative motion between the imaging surface and the apparatus, wherein the movement computation has a low sensitivity to effects in the digital images caused by particle contamination.
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申请公布号 |
US2008246725(A1) |
申请公布日期 |
2008.10.09 |
申请号 |
US20080060796 |
申请日期 |
2008.04.01 |
申请人 |
AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD. |
发明人 |
BROSNAN MICHAEL J.;KAKARALA RAMAKRISHNA;GREWAL ROOPINDER SINGH;BUTTERWORTH MARK M.;MOYER VINCENT C.;XIE TONG;DEPUE MARSHALL T. |
分类号 |
G06F3/033;G06F3/042;G06F3/03;G06F3/041;G06K11/06;G09G5/00 |
主分类号 |
G06F3/033 |
代理机构 |
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主权项 |
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地址 |
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