Multi-scan touch sensing system and method

The invention relates to a multi-scan touch sensing system and method. In some examples, the touch screen may perform a first touch scan to obtain first touch data and perform a second touch scan to obtain second touch data. The touch data generated by the second touch scan may exclude corresponding noise (e.g., display-to-touch crosstalk (DTX) noise) or may include a reduced amount of corresponding noise. In some examples, the electronic device may subtract the second touch data from the first touch data to obtain an estimate of noise in the first touch data. In some examples, this noise estimate may be subtracted from the first touch data, and an action may be performed based on the first touch data from which the noise estimate is removed. 本公开涉及多扫描触摸感测系统和方法。在一些示例中，触摸屏可执行第一触摸扫描以获得第一触摸数据，并执行第二触摸扫描以获得第二触摸数据。由该第二触摸扫描产生的该触摸数据可以排除相应的噪声(例如，显示到触摸串扰(DTX)噪声)或者可以包括减少量的相应噪声。在一些示例中，电子设备可从该第一触摸数据中减去该第二触摸数据以获得对该第一触摸数据中的噪声的估计。在一些示例中，可以从该第一触摸数据中减去此噪声估计，并且可以基于去除了该噪声估计的该第一触摸数据来执行动作。