Patent ID: 8350819

Claim:
A method for determining touch points on a touch panel, comprising: a sampling step for acquiring a first sensed value of each of sensors on the touch panel and storing the first sensed values; a difference calculating step for acquiring a second sensed value of each of the sensors and then acquiring a difference of each of the sensors, wherein the difference is obtained by subtracting the second sensed value sensed by each of the sensors from the first sensed value; a difference comparing step for comparing each of the differences with a preset threshold value and defining a touched sensor, wherein the difference of the touched sensor is greater than the preset threshold value and greater than the difference of each of the sensors adjacent to the touched sensor; a determinative area sampling step for acquiring each of the differences of the sensors in a determinative area, wherein the determinative area is centered around the touched sensor; and a barycenter calculating step for calculating a barycenter position according to each of the differences acquired in the determinative area sampling step, wherein the barycenter position comprises a longitudinal coordinate and a horizontal coordinate, wherein the barycenter position is a position of the touch point.