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:
May. 01, 2001
Filed:
Mar. 13, 1998
Applicant:
Inventors:
René Dändliker, Corcelles, CH;
Marc Bidiville, Pully, CH;
Assignee:
Logitech, Inc., Fremont, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 4/014 ; G01V 9/04 ;
U.S. Cl.
CPC ...
H01J 4/014 ; G01V 9/04 ;
Abstract
A method for generating quasi-sinusoidal signals includes illuminating an object capable of diffusely scattering light, focusing a portion of the scattered light on a multi-element sensor to form an image, and matching the image size to the size of the sensor elements.