Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Reexamination Certificate
2004-03-22
2008-11-04
Tran, My-Chau T (Department: 2629)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
C345S104000, C345S163000, C345S207000
Reexamination Certificate
active
07446756
ABSTRACT:
An apparatus for controlling the position of a screen pointer includes an at least partially coherent light source for illuminating an imaging surface, thereby generating reflected images. The apparatus includes a navigation sensor for generating digital images based on the reflected images, performing a movement computation based on the digital images, generating movement data based on the movement computation that is indicative of relative motion between the imaging surface and the apparatus, wherein the movement computation has a low sensitivity to effects in the digital images caused by particle contamination.
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Brosnan Michael J.
Butterworth Mark M.
Depue Marshall T.
Grewal Roopinder Singh
Kakarala Ramakrishna
Avago Technologies ECBU (IP) Singapore Pte. Ltd.
Tran My-Chau T
LandOfFree
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