Patent ID: 8330777

Claim:
A touch information processing method comprising: generating sensor output data from a touch sensor array including a plurality of touch sensors; individually storing the sensor output data in a frame unit and computing the sensor output data corresponding to adjacent frames to generate difference data; first binarizing the difference data based on a previously determined first threshold value to generate the difference data corresponding to a black gray level and the difference data corresponding to a white gray level; filtering the first binarized difference data to vary a gray level of the difference data corresponding to the black gray level depending on a black density around the difference data corresponding to the black gray level; and second binarizing the filtered difference data based on a previously determined second threshold value to generate the difference data corresponding to the black gray level and the difference data corresponding to the white gray level, wherein the filtering of the first binarized difference data uses Gaussian kernel expressed by the following Equation: K = 1 2 ⁢ πσ ⁢ exp ( - x 2 2 ⁢ σ 2 ) .