发明名称 |
Tactile interface for mobile devices |
摘要 |
A tactile input to a system having a speaker located in an enclosure with an audio port can be detected by generating a sound wave in response to a signal and sensing the phase relationship between the current phase and the voltage phase of the signal. While the audio port is open a baseline current and voltage phase difference is established. When the audio port is obstructed by a finger touch, the current and voltage phase difference is altered in response to the obstruction. While the altered phase difference is detected, a tactile event is indicated.
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申请公布号 |
US8179235(B2) |
申请公布日期 |
2012.05.15 |
申请号 |
US20090486663 |
申请日期 |
2009.06.17 |
申请人 |
LE-FAUCHEUR LAURENT;TEXAS INSTRUMENTS INCORPORATED |
发明人 |
LE-FAUCHEUR LAURENT |
分类号 |
H04B3/36;G08B6/00;G09B21/00;H03K17/94 |
主分类号 |
H04B3/36 |
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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