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:
Apr. 25, 2006
Filed:
Nov. 02, 2001
Applicant:
Yu-quan Su, Taipei Hsien, TW;
Inventor:
Yu-Quan Su, Taipei Hsien, TW;
Assignee:
Kye Systems Corp., Taipei Hsein, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 5/08 (2006.01); H01J 40/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical trackball is disclosed that is easy to operate without been worried about the contamination on the contacting shifts of encoders inside the trackball. When a distal motion from a user to rotate an operating ball having an uneven surface on the trackball, an image-detecting module will detect the varying of the reflected image from an illuminated portion of the uneven surface, causing the correspondingly moving of the cursor on the computer display.