发明名称 |
Method for capacitive image acquisition |
摘要 |
A grid-shaped array of conductor areas is used for capacitive image acquisition. Shielding conductors are disposed in each case between the conductors that are provided for measurement. During a plurality of charging and discharging cycles, the potential is always carried along on the conductors belonging to a respective pixel in order to prevent displacement currents between the shielding capacitors. By way of example, a compensation line with a feedback operational amplifier can be used for identically altering the electrical potentials on the conductors.
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申请公布号 |
US6365888(B2) |
申请公布日期 |
2002.04.02 |
申请号 |
US20010782733 |
申请日期 |
2001.02.13 |
申请人 |
INFINEON TECHNOLOGIES AG |
发明人 |
VON BASSE PAUL-WERNER;WILLER JOSEF;SCHEITER THOMAS;MARKSTEINER STEPHAN |
分类号 |
G01B7/28;A61B5/117;G06K7/08;G06K9/00;G06T1/00;(IPC1-7):H01L27/00 |
主分类号 |
G01B7/28 |
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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