| 摘要 |
The disclosure generally provides an input device including a reference voltage modulator to modulate reference voltage rails when performing capacitive sensing. According to one embodiment, the reference voltage rails are coupled to a DC power source to supply power in order to operate a panel including a display screen integrated with a touch sensing area. Before performing the capacitive sensing, the input device separates the DC power source from the reference voltage rails, and uses the reference voltage rails to modulate the rails e.g., V_DD and V_GND. The input device may include a receiver to simultaneously receive resultant signals from a plurality of display electrodes and/or sensor electrodes when modulating the reference voltage rails. The resultant signals may be processed in order to determine whether an input object interacts with the input device thereafter. |
