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:
Nov. 03, 2009
Filed:
Mar. 08, 2004
Applicants:
Roopinder Singh Grewal, San Jose, CA (US);
Ramakrishna Kakarala, Santa Clara, CA (US);
Inventors:
Roopinder Singh Grewal, San Jose, CA (US);
Ramakrishna Kakarala, Santa Clara, CA (US);
Assignee:
Avago Technologies ECBU IP (Singapore) Pte. Ltd., Singapore, SG;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K 9/00 (2006.01); G06F 3/033 (2006.01); G06F 3/042 (2006.01); G09G 3/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus for controlling the position of a screen pointer includes a 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, detecting defective pixel locations in the digital images, and generating movement data based on the digital images that is indicative of relative motion between the imaging surface and the apparatus.