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公开(公告)号：US12216746B2
公开(公告)日：2025-02-04
申请号：US17339813
申请日：2021-06-04
Applicant: Qualcomm Technologies Inc.
Inventor： Robert J. Littrell , Mathew Crowley
Abstract: Techniques for biometric authentication using a voice accelerometer and an acoustic transducer includes receiving a first signal representing an output by a voice accelerometer of a device and a second signal representing an output by an acoustic transducer of the device. Characteristics of each of the first signal and the second signal are compared with stored biometric characteristics for a user of the device. The user of the device is then authenticated based on the comparison.
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公开(公告)号：US12058939B2
公开(公告)日：2024-08-06
申请号：US18140577
申请日：2023-04-27
Inventor： Karl Grosh , Robert J. Littrell
CPC classification number: H10N30/50 , B81B3/0021 , B81B7/0032 , B81B7/02 , H04R17/00 , H04R17/02 , H10N30/302 , H10N30/306 , H10N30/308 , H10N30/853 , B81B2201/0257 , B81B2203/0127 , B81B2203/0315 , B81B2203/04 , B81B2207/09 , H04R2201/003
Abstract: A microphone including a casing having a front wall, a back wall, and a side wall joining the front wall to the back wall, a transducer mounted to the front wall, the transducer including a substrate and a transducing element, the transducing element having a transducer acoustic compliance dependent on the transducing element dimensions, a back cavity cooperatively defined between the back wall, the side wall, and the transducer, the back cavity having a back cavity acoustic compliance. The transducing element is dimensioned such that the transducing element length matches a predetermined resonant frequency and the transducing element width, thickness, and elasticity produces a transducer acoustic compliance within a given range of the back cavity acoustic compliance.
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3.发明授权公开(公告)号：US11950052B2
公开(公告)日：2024-04-02
申请号：US17675850
申请日：2022-02-18
Applicant: Qualcomm Technologies Inc.
Inventor： Karl Grosh , Robert J. Littrell
IPC: H04R17/02 , H01L41/27 , H01L41/314 , H01L41/332 , H04R7/06 , H04R31/00 , H10N30/05 , H10N30/074 , H10N30/082
CPC classification number: H04R17/02 , H04R7/06 , H04R31/003 , H10N30/05 , H10N30/074 , H10N30/082 , H04R17/025 , H04R31/00 , H04R2201/003 , H04R2410/03
Abstract: A transducer of the preferred embodiment including a transducer and a plurality of adjacent, tapered cantilevered beams. Each of the beams define a beam base, a beam tip, and a beam body disposed between the beam base and the beam tip. The beams are arranged such that each of the beam tips extends toward a common area. Each beam is joined to the substrate along the beam base and is free from the substrate along the beam body. A preferred method of manufacturing a transducer can include: depositing alternating layers of piezoelectric and electrode onto the substrate in block, processing the deposited layers to define cantilever geometry in block, depositing metal traces in block, and releasing the cantilevered beams from the substrate in block.
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公开(公告)号：US11892466B2
公开(公告)日：2024-02-06
申请号：US17807310
申请日：2022-06-16
Applicant: QUALCOMM Technologies, Inc.
Inventor： Robert J. Littrell
CPC classification number: G01P15/09 , G01P1/00 , H04R17/00 , H04R19/04 , H10N30/302 , H10N30/306 , H10N30/802 , H10N30/853 , H10N30/877 , H04R2201/003
Abstract: A sensor device that senses proper acceleration. The sensor device includes a substrate, a spacer layer supported over a first surface of the substrate, at least a first tapered cantilever beam element having a base and a tip, the base attached to the spacer layer, and which is supported over and spaced from the substrate by the spacer layer. The at least first tapered cantilever beam element tapers in width from the base portion to the tip portion. The at least first cantilever beam element further including at least a first layer comprised of a piezoelectric material, a pair of electrically conductive layers disposed on opposing surfaces of the first layer, and a mass supported at the tip portion of the at least first tapered cantilever beam element.
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5.发明授权公开(公告)号：US11617041B2
公开(公告)日：2023-03-28
申请号：US15930530
申请日：2020-05-13
Applicant: Qualcomm Technologies, Inc.
Inventor： Robert J. Littrell , Ronald Gagnon , Karl Grosh
Abstract: A device comprising: a sensor; and a first circuit configured to detect when an input stimulus to the sensor satisfies one or more detection criteria, and further configured to produce a signal upon detection that causes adjustment of performance of the device; and a second circuit for processing input following detection, wherein the second circuit is configured to increase its power level following detection, relative to a power level of the second circuit prior to detection.
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Patent Agency Ranking
公开(公告)号：US11871664B1
公开(公告)日：2024-01-09
申请号：US16790537
申请日：2020-02-13
Applicant: Qualcomm Technologies Inc.
Inventor： Robert J. Littrell , Karl Grosh
IPC: H01L41/083 , H10N30/50 , B06B1/06 , H01L21/02 , H10N30/87
CPC classification number: H10N30/508 , B06B1/064 , H01L21/02104 , H10N30/871
Abstract: A transducer comprising: at least one piezoelectric layer; a first patterned conductive layer that is patterned with a first opening; a second patterned conductive layer that is patterned with a second opening; wherein at least one piezoelectric layer is between the first and the second patterned conductive layers in a stack; and wherein a position of the first opening is staggered relative to a position of the second opening in the stack to mitigate an occurrence of crack propagation through the layers.
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公开(公告)号：US20230337544A1
公开(公告)日：2023-10-19
申请号：US18140577
申请日：2023-04-27
Inventor： Karl Grosh , Robert J. Littrell
CPC classification number: H10N30/50 , B81B3/0021 , B81B7/0032 , B81B7/02 , H04R17/00 , H04R17/02 , H10N30/302 , H10N30/306 , H10N30/308 , H10N30/853 , B81B2201/0257 , B81B2203/0127 , B81B2203/0315 , B81B2203/04 , B81B2207/09 , H04R2201/003
Abstract: A microphone including a casing having a front wall, a back wall, and a side wall joining the front wall to the back wall, a transducer mounted to the front wall, the transducer including a substrate and a transducing element, the transducing element having a transducer acoustic compliance dependent on the transducing element dimensions, a back cavity cooperatively defined between the back wall, the side wall, and the transducer, the back cavity having a back cavity acoustic compliance. The transducing element is dimensioned such that the transducing element length matches a predetermined resonant frequency and the transducing element width, thickness, and elasticity produces a transducer acoustic compliance within a given range of the back cavity acoustic compliance.
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公开(公告)号：US11617048B2
公开(公告)日：2023-03-28
申请号：US16819673
申请日：2020-03-16
Applicant: Qualcomm Technologies Inc.
Inventor： Robert J. Littrell
Abstract: An acoustic device is described and includes an acoustic sensor element configured to sense acoustic energy and produce an output signal and a threshold detector circuit including a switch having an input coupled to the output of the acoustic sensor element to receive the output signal, a control port that receives a control signal, and first and second output ports, a first channel including an analog-to-digital converter that operates at a first power level a second analog-to-digital converter that operates at a second higher power level, relative to the first power level and a threshold level detector that receives an output from the first analog-to-digital converter to produce the control signal having a first state that causes the switch feed the output signal from the acoustic sensor element to the second analog-to-digital converter when the first digitized output signal meets a threshold criteria.
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公开(公告)号：US12010488B2
公开(公告)日：2024-06-11
申请号：US18126938
申请日：2023-03-27
Applicant: Qualcomm Technologies Inc.
Inventor： Robert J. Littrell
CPC classification number: H04R29/004 , G10L25/18 , G10L25/21 , G10L25/78 , H04R17/02 , H04R19/04 , H04R2201/003
Abstract: An acoustic device is described and includes an acoustic sensor element configured to sense acoustic energy and produce an output signal and a threshold detector circuit including a switch having an input coupled to the output of the acoustic sensor element to receive the output signal, a control port that receives a control signal, and first and second output ports, a first channel including an analog-to-digital converter that operates at a first power level a second analog-to-digital converter that operates at a second higher power level, relative to the first power level and a threshold level detector that receives an output from the first analog-to-digital converter to produce the control signal having a first state that causes the switch feed the output signal from the acoustic sensor element to the second analog-to-digital converter when the first digitized output signal meets a threshold criteria.
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公开(公告)号：US11899039B2
公开(公告)日：2024-02-13
申请号：US17807319
申请日：2022-06-16
Applicant: QUALCOMM Technologies, Inc.
Inventor： Robert J. Littrell
CPC classification number: G01P15/09 , G01P1/00 , H04R17/00 , H04R19/04 , H10N30/302 , H10N30/306 , H10N30/802 , H10N30/853 , H10N30/877 , H04R2201/003
Abstract: A sensor device that senses proper acceleration. The sensor device includes a substrate, a spacer layer supported over a first surface of the substrate, at least a first tapered cantilever beam element having a base and a tip, the base attached to the spacer layer, and which is supported over and spaced from the substrate by the spacer layer. The at least first tapered cantilever beam element tapers in width from the base portion to the tip portion. The at least first cantilever beam element further including at least a first layer comprised of a piezoelectric material, a pair of electrically conductive layers disposed on opposing surfaces of the first layer, and a mass supported at the tip portion of the at least first tapered cantilever beam element.
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