The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 09, 2008
Filed:
Sep. 04, 2003
Tong Xie, San Jose, CA (US);
Michael Brosnan, Fremont, CA (US);
Tong Xie, San Jose, CA (US);
Michael Brosnan, Fremont, CA (US);
Avago Technologies ECBU IP Pte Ltd, Singapore, SG;
Abstract
An apparatus for optical navigation. The apparatus has a surface comprising an aperture, wherein the surface is configured to be moveable against an illuminated surface having a detectable texture. An optical motion detection circuit is integral to the apparatus and optically coupled to the detectable texture of the display screen. The optical motion detection circuit produces motion signals indicative of motion of the surface relative to the detectable texture of the illuminated surface, wherein the optical motion detection circuit is operable to detect the detectable texture without requiring an integral illumination source.