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:
Dec. 09, 2014
Filed:
Aug. 05, 2011
Chun-wei Wang, New Taipei, TW;
Chun-Wei Wang, New Taipei, TW;
Wistron Corporation, New Taipei, TW;
Abstract
A method for calibrating the accuracy of an optical touch monitor is provided. The optical touch monitor has a first lens and a second lens disposed at the same side of the optical touch monitor and faced towards the other side thereof. In the present method, one of a plurality of control points (CPs) on the optical touch monitor is touched by using a touch object. A first position and a second position of the touch object in images captured by the first lens and the second lens are substituted into a non-linear transformation function to calculate a weight matrix for system transformation. When the touch object touches a touch point on the optical touch monitor, a touch position of the touch object on the optical touch monitor is detected and transformed into screen coordinates of the optical touch monitor by using the weight matrix and the non-linear transformation function.