发明名称 |
Capacitor i.e. floating capacitor, characterizing/measuring method for controlling capacitive touch screen display, involves measuring time needed for voltage of midpoint of bridge to become equal to voltage of midpoint of another bridge |
摘要 |
<p>The method involves connecting a capacitor (Cc) to a midpoint (N1) of a capacitive voltage-dividing bridge (L1), and applying a bias voltage (V3) to the dividing bridge and another capacitive voltage-dividing bridge (L2) that is in parallel with the former bridge. Voltage (V1) of the midpoint is kept near a reference voltage (Vref). Another midpoint (N2) of the latter bridge is released by a constant current (I). Time needed for a voltage (V2) of the latter midpoint to become equal to the voltage of the former midpoint is measured. An independent claim is also included for a device for characterizing or measuring a capacitor, comprising a capacitive voltage-dividing bridge.</p> |
申请公布号 |
FR2959826(A1) |
申请公布日期 |
2011.11.11 |
申请号 |
FR20100001966 |
申请日期 |
2010.05.07 |
申请人 |
STMICROELECTRONICS (ROUSSET) SAS |
发明人 |
LA ROSA FRANCESCO |
分类号 |
G01R27/26;G06F3/044;G06K11/06 |
主分类号 |
G01R27/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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