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. 11, 2012
Filed:
Aug. 06, 2007
Robert J. Lang, Alamo, CA (US);
Brian Todoroff, San Jose, CA (US);
Yansun Xu, Mt. View, CA (US);
Jeffry C. Bailey, Newark, CA (US);
Robert J. Lang, Alamo, CA (US);
Brian Todoroff, San Jose, CA (US);
Yansun Xu, Mt. View, CA (US);
Jeffry C. Bailey, Newark, CA (US);
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
One embodiment relates to a method of tracking motion using a speckle-based motion sensor. A distance moved is determined by a first signal processing procedure, and a distance moved is determined by a second signal processing procedure. Selection between said distances is made based on whether the distance determined by the first signal processing procedure exceeds a predetermined threshold distance. According to a preferred embodiment, the first signal processing procedure makes a more accurate determination of distance for slower speeds, while the second signal processing procedure makes a more accurate determination of distance for higher speeds. Other embodiments, aspects and features are also disclosed.