首页>
外国专利>
Reduction of noise sensitivity through axis swap in mutual capacitance touchpad
Reduction of noise sensitivity through axis swap in mutual capacitance touchpad
展开▼
机译:通过互电容触摸板中的轴交换来降低噪声灵敏度
展开▼
页面导航
摘要
著录项
相似文献
摘要
A system and method for reducing noise on a touchpad that uses mutual capacitance on an X axis and Y axis grid of transverse electrodes that function as stimulus or drive electrodes on one axis and function as inputs or sense electrodes on a different axis, wherein there is significant noise that can affect operation of the touchpad, and wherein it is desirable to minimize the effects of this noise by simultaneously sampling a group of sense electrodes, wherein by sampling the sense electrodes at the same time, the level of noise on each sense electrode should be similar and can therefore be subtracted out of measured sense signals to therefore more accurately determine a position of a sensed object or objects on the touchpad.
展开▼