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1.发明授权公开(公告)号：US11082774B2
公开(公告)日：2021-08-03
申请号：US16725980
申请日：2019-12-23
Applicant: MOTOROLA SOLUTIONS, INC.
Inventor： Andrew P. Miehl , Deborah A. Gruenhagen , Geng Xiang Lee , Karl F. Mueller
Abstract: Methods and systems for verification of an environmental seal provided by an encapsulant coating of a bottom-ported MEMS microphone package. A purposeful acoustic leak is provided on an upper surface of a package housing (in the form of an additional acoustic port) and a sealing material is applied to an outer surface of the package housing. A properly applied encapsulant coating will completely seal the additional acoustic port on the upper surface of the package housing. However, the placement of the additional acoustic port on the upper surface of the package housing will have a significant, detectable effect on the frequency response of the microphone if it is not completely sealed by the encapsulant coating. Accordingly, the environmental seal provided by the encapsulant coating is verified by confirming, based on the acoustic frequency response testing, that the encapsulant coating has effectively sealed the additional acoustic port on the upper surface of the package housing.
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Patent Agency Ranking
公开(公告)号：US09800965B2
公开(公告)日：2017-10-24
申请号：US14887205
申请日：2015-10-19
Applicant: MOTOROLA SOLUTIONS, INC.
Inventor： Andrew P. Miehl , Patrick S. Claeys , Deborah A. Gruenhagen , Karl F. Mueller , David M. Yeager , Jorge L. Garcia , Andrew A. Efanov
CPC classification number: H04R1/086 , H01Q1/243 , H01Q1/44 , H04R1/2815 , H04R1/2823 , H04R1/283 , H04R1/2876 , H04R1/342 , H04R1/406 , H04R2201/003 , H04R2201/02 , H04R2201/107
Abstract: A microphone porting and venting assembly (100) is formed of a remote support substrate (118) providing a (130) acoustically resistive element with dedicated venting cavities (132) along with an external baffle (220) providing acoustic channels (212, 214, 216) which further provide water drainage and external sound sampling points (222, 224, 226). The microphone porting and venting assembly (100) is well suited waterproof, noise cancelling microphone systems.
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公开(公告)号：US20170111721A1
公开(公告)日：2017-04-20
申请号：US14887647
申请日：2015-10-20
Applicant: MOTOROLA SOLUTIONS, INC.
Inventor： Andrew P. Miehl , Deborah A. Gruenhagen , Gary A. Lee , David J. Meyer , Karl F. Mueller , John Kevin Arledge
CPC classification number: H04R1/086 , H04M1/035 , H04R1/04 , H04R1/083 , H04R1/2876 , H04R1/2884 , H04R2420/07 , H04R2499/11 , H05K1/181 , H05K5/0213
Abstract: A method and apparatus are described for providing an acoustically-resistive air-permeable venting structure within a sealed microphone acoustic cavity. A microphone is mounted on a printed circuit board and positioned within a housing. A water-resistant membrane seals the microphone from an exterior of the housing, and a active acoustic cavity establishes an acoustical connection between the water-resistant membrane and the microphone. An acoustically-resistive air-permeable venting structure is formed in the body of the printed circuit board and connects to the active acoustic cavity either directly or via a separate vent path. The venting structure provides a viscous dampening effect by venting an active acoustic cavity of the electronic device to the rest of the enclosure sealed by the water-resistant membrane.
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公开(公告)号：US20170111720A1
公开(公告)日：2017-04-20
申请号：US14887205
申请日：2015-10-19
Applicant: MOTOROLA SOLUTIONS, INC.
Inventor： Andrew P. Miehl , Patrick S. Claeys , Deborah A. Gruenhagen , Karl F. Mueller , David M. Yeager , Jorge L. Garcia , Andrew A. Efanov
CPC classification number: H04R1/086 , H01Q1/243 , H01Q1/44 , H04R1/2815 , H04R1/2823 , H04R1/283 , H04R1/2876 , H04R1/342 , H04R1/406 , H04R2201/003 , H04R2201/02 , H04R2201/107
Abstract: A microphone porting and venting assembly (100) is formed of a remote support substrate (118) providing a (130) acoustically resistive element with dedicated venting cavities (132) along with an external baffle (220) providing acoustic channels (212, 214, 216) which further provide water drainage and external sound sampling points (222, 224, 226). The microphone porting and venting assembly (100) is well suited waterproof, noise cancelling microphone systems.
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公开(公告)号：US09648434B1
公开(公告)日：2017-05-09
申请号：US14885928
申请日：2015-10-16
Applicant: MOTOROLA SOLUTIONS, INC
Inventor： Andrew P. Miehl , Patrick S. Claeys , Karl F. Mueller
CPC classification number: H04R31/006 , B81B7/0061 , B81B2201/0257 , H04R1/342 , H04R1/406 , H04R19/005 , H04R2201/003 , H04R2201/401 , H04R2499/11
Abstract: A microphone porting structure, comprises a substrate (312) having a bearing surface and a porting through-hole (344) formed therethough for aligning with a microphone port of a bottom ported microphone (334). The bearing surface provides an area against which to seal and the through-hole provides for acoustic path alignment for the audio ports of paired bottom ported microphones mounted to a printed circuit board.
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公开(公告)号：US09930435B2
公开(公告)日：2018-03-27
申请号：US14887647
申请日：2015-10-20
Applicant: MOTOROLA SOLUTIONS, INC.
Inventor： Andrew P. Miehl , Deborah A. Gruenhagen , Gary A. Lee , David J. Meyer , Karl F. Mueller , John Kevin Arledge
CPC classification number: H04R1/086 , H04M1/035 , H04R1/04 , H04R1/083 , H04R1/2876 , H04R1/2884 , H04R2420/07 , H04R2499/11 , H05K1/181 , H05K5/0213
Abstract: A method and apparatus are described for providing an acoustically-resistive air-permeable venting structure within a sealed microphone acoustic cavity. A microphone is mounted on a printed circuit board and positioned within a housing. A water-resistant membrane seals the microphone from an exterior of the housing, and a active acoustic cavity establishes an acoustical connection between the water-resistant membrane and the microphone. An acoustically-resistive air-permeable venting structure is formed in the body of the printed circuit board and connects to the active acoustic cavity either directly or via a separate vent path. The venting structure provides a viscous dampening effect by venting an active acoustic cavity of the electronic device to the rest of the enclosure sealed by the water-resistant membrane.
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