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:
Jan. 01, 2013
Filed:
Jul. 26, 2010
Jahja Trisnadi, San Jose, CA (US);
Clinton Carlisle, San Jose, CA (US);
Charles Roxlo, San Jose, CA (US);
David A. Lehoty, San Jose, CA (US);
Jahja Trisnadi, San Jose, CA (US);
Clinton Carlisle, San Jose, CA (US);
Charles Roxlo, San Jose, CA (US);
David A. Lehoty, San Jose, CA (US);
Cypress Semiconductor Corporation, San Jose, unknown;
Abstract
One embodiment relates to an optical displacement sensor for sensing movement of a data input device across a surface by determining displacement of optical features in a succession of frames. The sensor includes at least an illuminator, telecentric imaging optics on the object (scattering surface) side, and an array of photosensitive elements. The illuminator is configured to illuminate a portion of the surface. The telecentric imaging optics is configured to image the optical features emanating from the illuminated portion of the surface, and the array of photosensitive elements is configured to detect intensity data relating to the optical features imaged by the telecentric imaging optics. Other embodiments are also disclosed.