发明名称 |
System and method for microphone polarity detection |
摘要 |
<p>The present disclosure provides a method of determining microphone polarity in a headset. By being able to detect the polarity of the microphone within the headset, a portable electronic device may be compatible with any headset and is not limited to use with a specific headset. By applying a detection signal over one of lines within a headset cable, a return signal may be sensed on one of the other lines to determine which of the lines is the ground line and which line is the microphone line.</p> |
申请公布号 |
EP2458891(A1) |
申请公布日期 |
2012.05.30 |
申请号 |
EP20100193223 |
申请日期 |
2010.11.30 |
申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
POULSEN, JENS KRISTIAN;EL-HAGE, MOHAMAD |
分类号 |
H04R3/00;H04R1/10;H04R29/00 |
主分类号 |
H04R3/00 |
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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