Patent ID: 8269749
Filing Date: 2012-09-18
Classification: G06F

Abstract:
1. A displacement detection system of an optical touch panel, comprising: a panel for being touched by an object; at least one first image sensor and a second image sensor, wherein the first image sensor and the second image sensor are installed on different positions of the panel, and view of the first image sensor and view of the second image sensor are overlapped; a coordinate calculation device for utilizing the first image sensor and the second image sensor to capture a first image and a second image including images of the object respectively at a first time, utilizing image positions of the object in the first image and the second image to calculate a first coordinate of the object at the first time, utilizing the first image sensor and the second image sensor to capture a third image and a fourth image including images of the object respectively at a second time, and using image positions of the object in the third image and the fourth image to calculate a second coordinate of the object at the second time; and a coordinate correction device for calculating a displacement of the object between the first time and the second time according to the first coordinate and the second coordinate, and for correcting an output coordinate of the object at the second time according to the displacement.