CPC G06F 3/04184 (2019.05) [G06F 3/0412 (2013.01); G06F 3/0446 (2019.05); G06F 3/04186 (2019.05)] | 17 Claims |
1. A touch sensing device comprising:
a receiving circuit configured to receive a first sensing value generated in a differential mode using a first input signal provided to a first sensing electrode and a second input signal provided to a second sensing electrode;
a noise determination circuit configured to receive a reference sensing value generated using the second input signal and determining an amount of a noise of the first sensing value using the reference sensing value, and
a filter circuit configured to filter the first sensing value,
wherein the noise determination circuit is configured to adjust a filter coefficient of the filter circuit according to the amount of the noise, and
wherein the reference sensing value is generated based on a difference between the second input signal and a preset reference signal.
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