发明名称 |
SENSOR AND METHOD OF SENSING |
摘要 |
<p>A touch sensor senses the presence of an object at one of a plurality of channels on a surface of the touch sensor, wherein proximity of the object to the touch sensor results in a change in capacitance at the position of the channel. The touch sensor includes a drive circuit and a charge sensing circuit, each coupled to each of the channels. The charge sensing circuit includes at least one charge measurement capacitor. A measurement cycle is applied to the touch sensor having a drive portion and a sense portion. During the drive portion a charge is applied to the channels and therefore the charge measurement capacitors of the touch sensor, and during a sense portion the charge measurement capacitors are discharged by a predetermined amount and the remaining charge on the charge measurement capacitors is measured.</p> |
申请公布号 |
WO2010048433(A1) |
申请公布日期 |
2010.04.29 |
申请号 |
WO2009US61718 |
申请日期 |
2009.10.22 |
申请人 |
ATMEL CORPORATION;PHILIPP, HARALD;YILMAZ, ESAT |
发明人 |
PHILIPP, HARALD;YILMAZ, ESAT |
分类号 |
G06F3/044 |
主分类号 |
G06F3/044 |
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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