发明名称 |
CAPACITIVE TOUCH SENSOR WITH POLARITY NORMALIZATION |
摘要 |
This application relates to a projected capacitive touch sensor with polarity normalization. The sensor includes a sensor grid including one or more electrically conductive rows and one or more electrically conductive columns. The sensor further includes a first column multiplexer that is connected to a first portion of the one or more electrically conductive columns. The sensor further includes a second column multiplexer that is connected to a second portion of the one or more electrically conductive columns. The sensor further includes a polarity switching circuit that is configured to determine a polarity of a differential signal generated from an output of the first column multiplexer and an output of the second column multiplexer, and based on determining the polarity of the differential signal, determining whether to switch the polarity of the differential signal. |
申请公布号 |
US2016282986(A1) |
申请公布日期 |
2016.09.29 |
申请号 |
US201514882003 |
申请日期 |
2015.10.13 |
申请人 |
Displax S.A. |
发明人 |
Marques Pedro Luis Fernandes;Fonseca Miguel Angelo Magalhaes;Peixoto de Oliveira José Miguel Fernandes;Babo de Carvalho António Augusto |
分类号 |
G06F3/044;G06F3/041 |
主分类号 |
G06F3/044 |
代理机构 |
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代理人 |
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主权项 |
1. A projected capacitive touch sensor, comprising:
a sensor grid including one or more electrically conductive rows and one or more electrically conductive columns; a first column multiplexer that is connected to a first portion of the one or more electrically conductive columns; a second column multiplexer that is connected to a second portion of the one or more electrically conductive columns; a polarity switching circuit that is configured to:
determine a polarity of a differential signal generated from an output of the first column multiplexer and an output of the second column multiplexer; and
based on determining the polarity of the differential signal, determining whether to switch the polarity of the differential signal. |
地址 |
Braga PT |