公开(公告)号：US09874986B2

公开(公告)日：2018-01-23

申请号：US14945620

申请日：2015-11-19

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Yannick Guedon ,  Sze-Kwang Tan ,  Dianbo Guo

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0414 ,  G06F3/0416 ,  G06F2203/04103 ,  G06F2203/04108

Abstract: A readout device for a capacitive sense matrix includes a computer readable storage medium configured to store capacitance data. The capacitance data represents capacitance values of the capacitive sense matrix. The readout device also includes a readout circuit configured to receive a signal from the capacitive sense matrix, the readout circuit being configured based upon the capacitance data. Also described are a readout method and a method of compensating for variations in capacitance.