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Combined ambient pressure and acoustic mems sensor

An acoustic sensor, ambient pressure technology, applied in the direction of sensors, sensor types, piezoelectric/electrostrictive transducers, microphones, etc.

Active Publication Date: 2021-08-31
APPLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Consequently, multiple different transducers, sensors and / or processing units often must be incorporated into a portable device, resulting in product space challenges and integration challenges that cannot be achieved by reducing the size of each of these components individually to solve

Method used

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  • Combined ambient pressure and acoustic mems sensor
  • Combined ambient pressure and acoustic mems sensor
  • Combined ambient pressure and acoustic mems sensor

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Embodiment Construction

[0018] The following description shows numerous specific details. However, it is understood that embodiments of the invention may be practiced without these specific details. In other instances, well-known circuits, structures and techniques have not been shown in detail in order not to obscure the understanding of this description.

[0019] In the following description, reference is made to the accompanying drawings which illustrate several embodiments of the invention. It is to be understood that other embodiments may be utilized, and mechanical compositional, structural, electrical, and operational changes may be made without departing from the spirit and scope of the present disclosure. The following detailed description should not be read in a limiting sense, and the scope of embodiments of the present invention is defined only by the claims of the issued patent.

[0020] The terminology used herein is for the purpose of describing particular embodiments only and is not...

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Abstract

The title of the invention is: "Combined Environmental Pressure and Acoustic MEMS Sensor". The present invention discloses a microelectromechanical system (MEMS) environmental pressure and acoustic sensor, the MEMS environmental pressure and acoustic sensor includes: a housing having a housing wall, the housing defines an internal cavity and an acoustic connection to the internal cavity. an input opening; a mobile structure positioned within the interior chamber and acoustically coupled to the acoustic input opening. The moving structure has an acoustic sensing portion movable in response to an acoustic pressure input and an ambient pressure sensing portion movable in response to an ambient pressure input. The sensor also includes circuitry electrically coupled to the moving structure and operable to determine the acoustic output and the ambient pressure output based on the movement of the moving structure.

Description

[0001] Cross references to related patent applications [0002] This patent application claims the benefit of the earlier filing date of pending U.S. Provisional Patent Application 62 / 492,821, filed May 1, 2017, which is incorporated herein by reference. technical field [0003] Embodiments of the present invention relate to sensors for ambient pressure sensing and acoustic sensing; and more particularly to microelectromechanical systems (MEMS) sensing elements for ambient pressure sensing and acoustic sensing. Background technique [0004] In modern consumer electronics, portable computing devices such as laptops, notebooks, tablets, smartphones, and portable timepieces do not have enough space to accommodate relatively large transducers (eg. microphones, speakers, etc.) and / or or other sensors (eg, accelerometers, barometric pressure sensors, etc.). Consequently, transducers and sensors for such devices are becoming increasingly compact and reduced in size. However, tran...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H11/06G01H11/08G01L9/06G01L9/12
CPCG01H11/06G01H11/08G01L9/06G01L9/12B81B7/02B81B2201/0257B81B2201/0264B81B2203/0127B81B2207/012B81C1/00158B81C2203/036B81C2203/037G01L9/0001G01L19/0092H04R1/021H04R17/02H04R19/005H04R19/04H04R2201/003G01L9/0089G01L9/08H04R17/00
Inventor N·D·伊万斯J·S·艾伽什G·B·恩德特
Owner APPLE INC