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US 2016/0097856 A1Published application
Acoustic apparatus with dual mems devices
AssigneeKnowles Electronics, LLC
InventorsSarmad Qutub, William Ryan, Martin Volk, Wade Conklin
Life of this patent
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Abstract
In accordance with one aspect of the disclosure, an acoustic apparatus is provided including a first transducer, a second transducer, a signal generator coupled to the first transducer, and a proximity detection module coupled to the second transducer. A buffering module is coupled to the first and second transducers and is configured to process analog signals received from the second transducer.
Claims16
An acoustic apparatus, comprising:
- a first transducer;
- a second transducer;
- a signal generator coupled to the first transducer;
- a proximity detection module coupled to the first and second transducers;
- a buffering module coupled to the second transducer, the buffering module configured to process analog signals received from the second transducer;
- wherein in a first mode, the signal generator drives the first transducer to produce ultrasonic signals;
- wherein in a second mode, the ultrasonic signals are reflected by an object and returned as reflected ultrasonic signals to the second transducer;
- wherein in the a third mode, the reflected ultrasonic signals are processed by the proximity detection module to obtain a distance parameter, the distance parameter indicative of a distance between the apparatus and the object;
- wherein in a fourth mode, the second transducer receives human-hearable audio signals.
6 more elements
A method of operating an apparatus, the method comprising:
- driving a first transducer by a signal generator to produce ultrasonic signals;
- reflecting the ultrasonic signals from an object as reflected ultrasonic signals;
- receiving the reflected ultrasonic signals at a second transducer;
- processing the received reflected ultrasonic signals by a proximity detection module to obtain a distance parameter, the distance parameter indicative of a distance between the apparatus and the object;
- receiving at the second transducer human-hearable audio signals.
2 more elements
Dependencies are inferred from the claim text.