Touch screen sensor integrated circuits, methods of operating the same, and systems having the touch screen sensor integrated circuits

摘要

At least one example embodiment discloses a sensor circuit capable of processing a second input signal received via a sensing line by using a demodulation path for performing a demodulation operation or processing the second input signal by using a non-demodulation path that does not perform the demodulation operation, according to a level of a first input signal, for example, a noise signal, received via the sensing line.

主权项

1. A method of operating a touch screen sensor integrated circuit (IC), the method comprising:
determining if a first input signal output from a capacitive touch screen panel is within a noise window; selecting one of a demodulation path and a non-demodulation path based on the determining; and processing a second input signal output from the capacitive touch screen panel using the selected one of the demodulation path and the non-demodulation path.