| 发明名称 |
Visible pointer tracking with separately detectable pointer tracking signal |
| 摘要 |
The invention concerns pointer tracking using a signal possessing an optical characteristic that is separately detectable from a projected display. An area of the projected display is sensed. Sensing is conducted with filtering for the separately detected optical characteristic. |
| 申请公布号 |
EP1452902(A1) |
申请公布日期 |
2004.09.01 |
| 申请号 |
EP20040250692 |
申请日期 |
2004.02.09 |
| 申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
PATE, MICHAEL A.;WENG, JIAN-GANG |
| 分类号 |
G02B27/20;G06F3/038;G06F3/042;(IPC1-7):G02B27/20 |
主分类号 |
G02B27/20 |
| 代理机构 |
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