CPC G06F 3/0418 (2013.01) [G06F 3/0446 (2019.05); G06F 3/04166 (2019.05)] | 20 Claims |
1. A method comprising:
generating an in-phase drive signal and an opposite-phase drive signal;
applying, at a substantially same time, the in-phase drive signal to a first transmitter electrode and the opposite-phase drive signal to a second transmitter electrode, wherein the first transmitter electrode and the second transmitter electrode are adjacent electrodes;
receiving a first sense signal from a first receiver electrode;
receiving a second sense signal from a second receiver electrode, wherein the first receiver electrode and the second receiver electrode are adjacent electrodes;
receiving a fourth sense signal from a third receiver electrode, wherein the third receiver electrode and the second receiver electrode are adjacent electrodes;
combining the first sense signal and the second sense signal to and obtain a third sense signal, wherein the third sense signal represents a first self capacitance associated with the first receiver electrode;
combining the second sense signal and the fourth sense signal to obtain a fifth sense signal, wherein the fifth sense signal represents a second self capacitance associated with the second receiver electrode; and
detecting a presence of an object on a touch panel using at least the first self capacitance and the second self capacitance.
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