Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2011-01-11
2011-01-11
Tran, My-Chau T (Department: 2629)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C250S206000, C250S216000, C250S221000, C345S163000, C345S166000
Reexamination Certificate
active
07868281
ABSTRACT:
An optical navigation system and method of estimating motion uses a plate with an aperture, a photodetector and an optical system for optical lift detection. The optical system is configured to direct an input light to a target surface through the aperture of the plate and to direct the input light reflected from the target surface and transmitted back through the aperture of the plate toward the photodetector to be detected by the photodetector for lift detection.
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Krishnan Thineshwaran G.
Lee Sai Mun
Leong Yat Kheng
Avago Technologies ECBU (IP) Singapore Pte. Ltd.
Tran My-Chau T
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