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1. EP2271134 - Proximity sensor comprising an acoustic transducer for receiving sound signals in the human audible range and for emitting and receiving ultrasonic signals.

Office European Patent Office
Application Number 09164437
Application Date 02.07.2009
Publication Number 2271134
Publication Date 05.01.2011
Publication Kind A1
IPC
H04R 19/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
19Electrostatic transducers
B81B 3/00
BPERFORMING OPERATIONS; TRANSPORTING
81MICROSTRUCTURAL TECHNOLOGY
BMICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
3Devices comprising flexible or deformable elements, e.g. comprising elastic tongues or membranes
G01S 3/80
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
3Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
80using ultrasonic, sonic, or infrasonic waves
H03K 17/945
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
KPULSE TECHNIQUE
17Electronic switching or gating, i.e. not by contact-making and -breaking
94characterised by the way in which the control signals are generated
945Proximity switches
H04R 19/04
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
19Electrostatic transducers
04Microphones
CPC
G01S 15/06
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
15Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
02using reflection of acoustic waves
06Systems determining the position data of a target
G01S 15/876
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
15Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
87Combinations of sonar systems
876Combination of several spaced transmitters or receivers of known location for determining the position of a transponder or a reflector
H03K 17/94
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
KPULSE TECHNIQUE
17Electronic switching or gating, i.e. not by contact-making and –breaking
94characterised by the way in which the control signals are generated
H03K 2217/94005
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
KPULSE TECHNIQUE
2217Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
94characterised by the way in which the control signal is generated
94005activated by voice or sound
H04M 1/6016
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
MTELEPHONIC COMMUNICATION
1Substation equipment, e.g. for use by subscribers
60including speech amplifiers
6016in the receiver circuit
H04R 19/005
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
19Electrostatic transducers
005using semiconductor materials
Applicants NXP BV
KONINKL PHILIPS ELECTRONICS NV
Inventors LANGEREIS GEERT
VAN LIPPEN TWAN
DIRKSEN PETER
PASVEER FRANK
Designated States
Priority Data 09164437 02.07.2009 EP
Title
(DE) Näherungssensor mit einem akustischen Wandler für den Empfang von hörbaren Tonsignalen und für das Aussenden und Empfangen von Ultraschallsignalen.
(EN) Proximity sensor comprising an acoustic transducer for receiving sound signals in the human audible range and for emitting and receiving ultrasonic signals.
(FR) Capteur de proximité comprenant un transducteur acoustique pour la réception de signaux sonores dans la gamme audible humaine et pour l'émission et la réception des signaux ultrasoniques.
Abstract
(EN)
Proximity sensor, particularly for usage in an electronic mobile device (1), comprising at least one acoustic transducer (4) adapted for receiving acoustic signals (8) at least in parts of the frequency range of human audible sound and emitting and/or receiving ultrasonic signals (6, 7) for proximity estimation. The acoustic transducer preferably is a Micro-ElectroMechanical-Systems (MEMS) microphone. Further, a method in an electronic device comprising an acoustic transducer (4) 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 (6) by means of the acoustic transducer; receiving at least one ultrasonic signal (7) 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.

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