发明名称 |
Touch sensing with touch down and lift off sensitivity |
摘要 |
A touch sensing device includes a plurality of sensors and an emitting transducer coupled to a touch panel. The transducer induces bending waves in the touch panel. The sensors sense bending waves in the touch panel and generate a bending wave signal responsive to the sensed bending waves. A controller identifies an untouched condition signal responsive to the induced bending waves. The controller compares the untouched condition signal to the bending wave signal, and detects a touch on the touch panel based on the comparison.
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申请公布号 |
US7277087(B2) |
申请公布日期 |
2007.10.02 |
申请号 |
US20030750291 |
申请日期 |
2003.12.31 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
HILL NICHOLAS P. R.;SULLIVAN DARIUS M. |
分类号 |
G09G5/08;G06F3/033 |
主分类号 |
G09G5/08 |
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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