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:
Jun. 02, 2020
Filed:
Dec. 18, 2018
Applicant:
National Chung-shan Institute of Science and Technology, Taoyuan, TW;
Inventors:
Assignee:
National Chung-Shan Institute of Science and Technology, Taoyuan, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/48 (2006.01); G01B 11/00 (2006.01); G06F 3/03 (2006.01);
U.S. Cl.
CPC ...
G02B 27/48 (2013.01); G01B 11/002 (2013.01); G06F 3/0317 (2013.01);
Abstract
The present invention is to provide a method of precisely comparing and positioning speckle patterns, which calculates light intensities of the speckle patterns, is capable of enhancing positioning accuracy of the speckle patterns, and is applicable to various navigation input devices for various types of notebook computers, multi-function keyboard and TV remote control.