Patent ID: 8284172

Claim:
A detecting method for a photo-sensor touch panel, comprising: scanning the photo-sensor touch panel to obtain an image frame; defining a distribution area of data points in the image frame each having a brightness between a predetermined brightness and a first threshold brightness as a first sensing area, and defining a distribution area of data points in the image frame each having a brightness between the predetermined brightness and a second threshold brightness as a second sensing area; and determining whether a real touch probably occurred according to a relative distance between one of a plurality of first data points and corresponding one of a plurality of second data points, wherein the first data points are located in the first sensing area and the second data points are located in the second sensing area, wherein when the relative distance is smaller than a predetermined distance, determining that a real touch probably occurred, wherein when it is determined that a real touch probably occurred, detecting the amount of the second data points having the relative distances smaller than the predetermined distance whether reaches a predetermined number, if the detecting result is YES, determining that a real touch really occurred, and wherein the step of detecting the amount of the second data points having the relative distances smaller than the predetermined distance comprises: counting the amount of data points in the second sensing area located at a same row with an initial second data point which is firstly used to calculate the relative distance, along a predetermined direction whereby the initial second data point is taken as start point; and determining the amount of the second data points having the relative distances smaller than the predetermined distance whether reaches the predetermined number according to the counting result.