发明授权
US08401513B2 Proximity sensor, in particular microphone for reception of sound signals in the human audible sound range, with ultrasonic proximity estimation
有权
接近传感器，特别是用于在人类声音范围内接收声音信号的麦克风，具有超声波接近估计
- 专利标题： Proximity sensor, in particular microphone for reception of sound signals in the human audible sound range, with ultrasonic proximity estimation
- 专利标题（中）： 接近传感器，特别是用于在人类声音范围内接收声音信号的麦克风，具有超声波接近估计
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申请号： US12828482申请日： 2010-07-01
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公开(公告)号： US08401513B2公开(公告)日： 2013-03-19
- 发明人: Geert Langereis , Twan van Lippen , Peter Dirksen , Frank Pasveer
- 申请人： Geert Langereis , Twan van Lippen , Peter Dirksen , Frank Pasveer
- 申请人地址： NL Eindhoven
- 专利权人： NXP B.V.
- 当前专利权人： NXP B.V.
- 当前专利权人地址： NL Eindhoven
- 代理机构： Kramer & Amado P.C.
- 优先权： EP09164437 20090702
- 主分类号： H04M9/00
- IPC分类号： H04M9/00
摘要：
Proximity sensor, particularly for usage in an electronic mobile device, comprising at least one acoustic transducer adapted for receiving acoustic signals at least in parts of the frequency range of human audible sound and emitting and/or receiving ultrasonic signals for proximity estimation. The acoustic transducer preferably is a Micro-Electro-Mechanical-Systems (MEMS) microphone. Further, a method in an electronic device comprising an acoustic transducer is provided comprising the steps of generating at least one electric signal in the frequency range of ultrasonic sound, emitting at least one ultrasonic signal by means of the acoustic transducer; receiving at least one ultrasonic signal by means of the acoustic transducer; deducing from the at least one emitted ultrasonic signal and the at least one received ultrasonic signal at least the delay between emission of the emitted ultrasonic signal and reception of the corresponding ultrasonic signal.