Patent ID: 8884667

Claim:
A touch panel system comprising: a signal generator configured to generate a reference signal; one or more channels, wherein each of the channels are configured to detect a touch; a sensing unit configured to sense the touch to output a sensing signal indicative of the touch event; a delay unit configured to receive the reference signal and adjust the reference signal based on a delay compensation value to compensate delay of the reference signal caused by the difference of distance between the signal generator and each of the channel; an operation unit configured to perform an operation on the sensing signal and the reference signal from the delay units to produce an operation result representing the difference between the sensing signal and the adjusted reference signal; a controller configured to determine the delay compensation value of the delay unit in each channel based on the operation result from the operation unit; and a reset signal generator configured to provide a reset signal or the adjusted reference signal to the delay unit in each channel by a user's request, at a preset time period, or at the driving of the touch panel system.