发明名称 |
HANDHELD POINTER DEVICE AND POINTER POSITIONING METHOD THEREOF |
摘要 |
A pointer positioning method for a handheld pointer device includes: capturing a first frame containing a reference point when the handheld pointer device updates a first tilt angle presently used to a second tilt angle; computing a first pointing coordinate according to the image position of the reference point in the first frame and the first tilt angle; computing a second pointing coordinate according to the image position of the reference point in the first frame and the second tilt angle; capturing a second frame containing the reference point to compute a third pointing coordinate according to the image position of the reference point in the second frame and the second tilt angle; generating a cursor parameter for controlling a display position of a cursor on a display apparatus according to the first pointing coordinate, the second pointing coordinate, and the third pointing coordinate. |
申请公布号 |
US2015054745(A1) |
申请公布日期 |
2015.02.26 |
申请号 |
US201414536769 |
申请日期 |
2014.11.10 |
申请人 |
PIXART IMAGING INC. |
发明人 |
CHENG HAN-PING;HUANG CHAO-CHIEN |
分类号 |
G06F3/033 |
主分类号 |
G06F3/033 |
代理机构 |
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代理人 |
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主权项 |
1. A pointer positioning method of a handheld pointer device, comprising:
capturing a first frame containing a reference point when the handheld pointer device updates a first tilt angle presently used to a second tilt angle; computing a first pointing coordinate according to the image position of the reference point formed in the first frame and the first tilt angle; computing a second pointing coordinate according to the image position of the reference point formed in the first frame and the second tilt angle; capturing a second frame containing the reference point and computing a third pointing coordinate according to the image position of the reference point formed in the second frame and the second tilt angle; and computing a cursor position according to the first pointing coordinate, the second pointing coordinate, and the third pointing coordinate and generating a cursor parameter controlling a display position of a cursor on a display apparatus. |
地址 |
HSIN-CHU TW |