Patent ID: 9213439
Filing Date: 2015-12-15
Classification: G06F

Abstract:
1. An optical touch device for detecting a position of an object, comprising: a display defined a coordinate detecting area; a depth sensor installed in the display for generating image data of the object, the image data comprising a width information corresponding to a distance between the object and the depth sensor in a first direction, and a depth information corresponding to a distance between the object and the depth sensor in a second direction; and a control module coupled to the depth sensor for receiving the image data and determining whether the object is located within the coordinate detecting area according to a comparison result of the width information and the depth information provided by the depth sensor and a predetermined effective range of the coordinate detecting area, wherein the control module further determines whether to calculate a coordinate value of the object within the coordinate detecting area according to a result of determining whether the object is located within the coordinate detecting area.