PROXIMITY SENSOR, IN PARTICULAR MICROPHONE FOR RECEPTION OF SOUND SIGNALS IN THE HUMAN AUDIBLE SOUND RANGE, WITH ULTRASONIC PROXIMITY ESTIMATION
First Claim
1. A proximity sensor comprising:
- at least one acoustic transducer configured to;
receive acoustic signals at least in a portion of a frequency range of human audible sound; and
emit and receive ultrasonic signals for proximity estimation,wherein the proximity sensor is operable to deduce from at least one emitted ultrasonic signal and at least one received ultrasonic signal at least a delay between emission of the emitted ultrasonic signal and reception of the corresponding, in particular correlating, ultrasonic signal.
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Accused Products
Abstract
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.
53 Citations
18 Claims
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1. A proximity sensor comprising:
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at least one acoustic transducer configured to; receive acoustic signals at least in a portion of a frequency range of human audible sound; and emit and receive ultrasonic signals for proximity estimation, wherein the proximity sensor is operable to deduce from at least one emitted ultrasonic signal and at least one received ultrasonic signal at least a delay between emission of the emitted ultrasonic signal and reception of the corresponding, in particular correlating, ultrasonic signal. - View Dependent Claims (2, 3, 4, 5, 6, 13, 14, 15, 16, 17, 18)
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7. A method of proximity estimation in an electronic device having an acoustic transducer, the method comprising:
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generating at least one electric signal in a frequency range of ultrasonic sound; the acoustic transducer emitting at least one ultrasonic signal by the acoustic transducer; the acoustic transducer receiving at least one ultrasonic signal by the acoustic transducer; and deducing from the at least one emitted ultrasonic signal and the at least one received ultrasonic signal at least a delay between emission of the emitted ultrasonic signal and reception of the corresponding, in particular correlating, ultrasonic signal. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification