发明名称 |
OPTICAL NAVIGATION DEVICE AND RELATED AUTOMATIC MAGNIFICATION ADJUSTING METHOD |
摘要 |
An automatic magnification adjusting method is applied to an optical navigation device. The optical navigation device has an illumination channel, a reference channel and an imaging channel. The reference channel has a reference feature with a known parameter. The automatic magnification adjusting method includes driving the illumination channel and the reference channel to alternatively output a detecting image and a reference image, capturing a series of navigation images consisting of the detecting image and the reference image by the imaging channel, analyzing the reference image to recognize the reference feature, calculating a compensating factor according to a detected parameter of the reference feature, and adjusting magnification of the detecting image by the compensating factor to output corresponding coordinate displacement. |
申请公布号 |
US2016209935(A1) |
申请公布日期 |
2016.07.21 |
申请号 |
US201514601240 |
申请日期 |
2015.01.21 |
申请人 |
PixArt Imaging (Penang) SDN. BHD. |
发明人 |
LEE Sai Mun |
分类号 |
G06F3/03;G06F3/038;G06F3/0354 |
主分类号 |
G06F3/03 |
代理机构 |
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代理人 |
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主权项 |
1. An automatic magnification adjusting method applied to an optical navigation device, the optical navigation device having an illumination channel, a reference channel and an imaging channel, the reference channel having at least one reference feature with a known parameter, the automatic magnification adjusting method comprising:
driving the illumination channel and the reference channel to alternatively output a detecting beam and a reference beam; capturing a series of navigation images consisting of a detecting image formed by the detecting beam and a reference image formed by the reference beam via the imaging channel; analyzing the reference image to recognize the reference feature; calculating a compensating factor according to a detected parameter of the reference feature; and adjusting magnification of the detecting image by the compensating factor to output corresponding coordinate displacement. |
地址 |
Penang MY |