公开(公告)号：US20150309618A1

公开(公告)日：2015-10-29

申请号：US14671989

申请日：2015-03-27

Applicant: SYNAPTICS INCORPORATED

Inventor： Drew Garvin KEPPEL, JR. ,  Shubha RAMAKRISHNAN

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0418

Abstract: A processing system for a capacitive sensing input device comprises a sensor module and a determination module. The sensor module acquires a plurality of capacitive resulting signals by operating a plurality of sensor electrodes for capacitive sensing. The determination module weights values of the plurality of capacitive resulting signals to achieve a plurality of weighted capacitive resulting signals, wherein a first capacitive resulting signal of the plurality of capacitive resulting signals is weighted according to a weighted noise parameter derived from a component of a variable noise associated with a respective sensor electrode used for acquisition of the first capacitive resulting signal, wherein the variable noise varies across the plurality of sensor electrodes. The determination module also determines positional information for an least input object in a sensing region of the capacitive sensing input device based on resulting signals processed from the weighted capacitive resulting signals.

Abstract translation: 一种用于电容感测输入装置的处理系统，包括传感器模块和确定模块。 传感器模块通过操作用于电容感测的多个传感器电极来获取多个电容性结果信号。 所述确定模块对所述多个电容性结果信号的权重进行加权，以实现多个加权的电容结果信号，其中所述多个电容性结果信号的第一电容结果信号根据从变量的分量导出的加权噪声参数进行加权 与用于获取第一电容性结果信号的相应传感器电极相关联的噪声，其中可变噪声在多个传感器电极之间变化。 确定模块还基于从加权的电容结果信号处理的结果信号，确定电容感测输入装置的感测区域中的最小输入对象的位置信息。