Patent ID: 9104266
Filing Date: 2015-08-11
Classification: G06F

Abstract:
1. A signal processing system of a touch screen, comprising: a first switch block configured to switch a plurality of channels set in the touch screen in response to a channel select signal; a touch signal processing block comprising a plurality of touch signal processing circuits configured to generate a plurality of noise detection signals by processing input signals for the respective channels, and generating a plurality of integral signals by processing the input signals for the respective channels, wherein each of the touch signal processing circuits generates an integral signal by integrating a differential signal of an input signal to remove continuous noise from the input signal when the input signal contains the continuous noise. and stops integration of the differential signal when the input signal contains peaking noise; a second switch block configured to switch transmission of the plurality of integral signals to an analog digital converter in response to a multiplexer control signal; and a control signal generation block configured to generate the plurality of control signals using the plurality of noise detection signals and generate the channel select signal and the multiplexer control signal.