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:
Jul. 15, 2008
Filed:
May. 06, 2005
Tong Xie, San Jose, CA (US);
Ramakrishna Kakarala, Santa Clara, CA (US);
Vincent C. Moyer, Milpitas, CA (US);
Tong Xie, San Jose, CA (US);
Ramakrishna Kakarala, Santa Clara, CA (US);
Vincent C. Moyer, Milpitas, CA (US);
Avago Technologies ECBU IP Pte Ltd, Singapore, SG;
Abstract
An optical pointing device includes a light source configured to respond to a drive current to provide at least partially coherent light to illuminate an imaging surface to thereby generate reflected images. A navigation sensor is configured to generate digital images based on the reflected images, and generate movement data based on the digital images that are indicative of relative motion between the imaging surface and the optical pointing device. A light source driver is configured to provide the drive current to the light source. A drive current controller is configured to calibrate the drive current based on selected digital images.