Circuit and method for determining motion with redundant comb-arrays
US8547336B1 · kind B1 · utility
2Cited by
84References
9Claims
0Family size
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Key dates
| Filing date | Feb 8, 2011 |
| Grant date | Oct 1, 2013 |
| Priority date | — |
| Expiry date | Apr 25, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/03549
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical navigation system and method are provided. In one embodiment, the method includes: (i) generating for a first group of photosensitive elements a first quasi-sinusoidal signal at a first time, and a second quasi-sinusoidal signal at a second time in response to motion of light received thereon in a first direction; (ii) computing from the first and second quasi-sinusoidal signals a phase angle change; and (iii) computing from the first and second quasi-sinusoidal signals a radius value. Other embodiments are also described.
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