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:
Aug. 14, 2007
Filed:
Nov. 20, 2003
Jong Taek Kwak, Seongnam, KR;
Jong Taek Kwak, Seongnam, KR;
ATLab Inc., , KR;
Abstract
The present invention relates to an optical pointing system and a method for calculating a movement value thereof, comprising: an image sensor for detecting light reflected from a worktable surface to generate an image signal, a maximum search window variable circuit for inputting at least one of the image signal and a movement value to change a size of a maximum search window, and a movement value calculation circuit for calculating the movement value of the image signal using the maximum search window with the changed size. Therefore, an exact movement value can be found by changing at least one of the maximum search window and a sampling rate according to at least one of a quantity of light and a movement speed to calculate the movement value.