发明名称 Capacitance measuring circuit and method
摘要 Disclosed are systems and methods of measuring a plate capacitance, which include accumulating a first signal representative of charge over a plurality of switch-controlled plate charging cycles and accumulating a second signal representative of charge over another plurality of switch-controlled plate discharging cycles. The accumulated first and second signals can then be used to determine the capacitance on the plate. Such systems and methods can be useful in capacitive touch sensing devices such as capacitive buttons and capacitive touch panels.
申请公布号 US8207944(B2) 申请公布日期 2012.06.26
申请号 US20060612790 申请日期 2006.12.19
申请人 GEAGHAN BERNARD O.;3M INNOVATIVE PROPERTIES COMPANY 发明人 GEAGHAN BERNARD O.
分类号 G06F3/044;G01R27/26 主分类号 G06F3/044
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