Capacitance detecting circuit

专利名称：Capacitance detecting circuit发明人：Shengsheng Chen,Jie Zhang,Yun Yang申请号：US15436981申请日：20170220公开号：US09846514B2公开日：20171219

专利附图：

摘要：A capacitance detecting circuit includes induction units; a transferring capacitorconfigured to transfer charges to a capacitor of a scanned induction unit; a chargingmodule that charges the transferring capacitor, wherein a first terminal of the chargingmodule connects to the first terminal of the transferring capacitor, and a second terminal

of the charging module connects to a first power supply; a discharging module thatdischarges the transferring capacitor and including a first resistor and a second switch;and a controller connected to the charging module, the transferring capacitor and thedischarging module, and configured to control the second switch to switch on when avoltage of the transferring capacitor is larger than a preset threshold voltage, and toupdate a count value and detect a touch on the induction units according to the countvalue.

申请人：BYD COMPANY LIMITED

地址：Shenzhen CN

国籍：CN

代理机构：Anova Law Group, PLLC

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