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公开(公告)号：US12226801B2
公开(公告)日：2025-02-18
申请号：US18423200
申请日：2024-01-25
Applicant: InvenSense, Inc.
Inventor： Stefon Shelton , Fabian Goericke , Benedict Costello
Abstract: The teachings of the present disclosure enable the manufacture of one or more piezoelectric micromachined ultrasonic transducers (PMUTs) having a resonant frequency of a specific target value and/or substantially matched resonant frequencies. In accordance with the present disclosure, a flexible membrane of a PMUT is modified to impart a desired parameter profile for stiffness and/or mass to tune its resonant frequency to a target value. The desired parameter profile is achieved by locally removing or adding material to regions of one or more layers of the flexible membrane to alter its geometric dimensions and/or density. In some embodiments, material is added or removed non-uniformly across the structural layer to realize a material distribution that more strongly affects membrane stiffness than mass. In some embodiments, material having a specific residual stress is added to, and/or removed from, the membrane to define a desired modal stiffness for the membrane.
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公开(公告)号：US20250041899A1
公开(公告)日：2025-02-06
申请号：US18403964
申请日：2024-01-04
Applicant: InvenSense, Inc.
Inventor： Benjamin Eric Eovino , Stefon Eric Shelton , Fabian Thomas Goericke
Abstract: A piezoelectric micromachined ultrasound transducer (PMUT) device has different transduction efficiency at different portions of the PMUT device depending on design characteristics such as materials, material thicknesses, and shape. A metal layer of the PMUT device is patterned to render certain portions of the piezoelectric layer of the PMUT device inactive. Only the active portions of the piezoelectric layer are utilized for transmission and reception of ultrasonic signals, while overall PMUT device capacitance is reduced due to the lack of an active capacitor in the inactive region(s) of the PMUT device, resulting in a PMUT design with increased sensitivity. For differential PMUT devices, the patterning may be performed to match capacitances associated with the differential piezoelectric regions.
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公开(公告)号：US12170869B2
公开(公告)日：2024-12-17
申请号：US17931783
申请日：2022-09-13
Applicant: INVENSENSE, INC.
Inventor： Joseph Seeger , Sushil Bharatan , Andrew Randles , Michael John Foster
Abstract: The present invention relates to a fixed-fixed membrane for a microelectromechanical system (MEMS) microphone. In one embodiment, a MEMS acoustic sensor includes a substrate; a membrane situated parallel to the substrate; and at least one vent formed into the membrane, wherein the at least one vent is a curved opening in the membrane, and wherein the at least one vent is disposed substantially along a length of the membrane.
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4.发明公开公开(公告)号：US20240346381A1
公开(公告)日：2024-10-17
申请号：US18634521
申请日：2024-04-12
Applicant: InvenSense, Inc.
Inventor： Juan S. Mejia SANTAMARIA , Abbas ATAYA , Rémi Louis Clément PONÇOT
IPC: G06N20/00
CPC classification number: G06N20/00
Abstract: Disclosed embodiments provide data augmentation techniques in which collected sensor data (for example, data from a motion sensor or a microphone) related to a gesture or an activity is used to simulate a unified data representation by using one or more transfer functions. The collected sensor data is for a particular condition. The unified representation is agnostic to the condition in which the gesture or activity is made. The unified representation is used to train a machine learning model (MLM). The MLM is then deployed on an integrated circuit chip of an embedded device. Live sensor data received by the embedded device is then transformed and input to the MLM, and the MLM then performs a prediction by, for example, recognizing a gesture made by the user of the embedded device.
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公开(公告)号：US12013371B2
公开(公告)日：2024-06-18
申请号：US17226447
申请日：2021-04-09
Applicant: InvenSense, Inc.
Inventor： Mitchell H Kline , Joe Youssef
CPC classification number: G01N29/041 , A47L9/2826 , A47L9/2852 , G01N29/225
Abstract: A robotic cleaning appliance includes a sonic transducer and a processor coupled with a housing. The sonic transducer transmits sonic signals toward a surface within its ringdown distance and receives corresponding returned signals. Following cessation of the sonic signals, the processor samples the ringdown signal generated by the sonic transducer during an early portion before the corresponding returned signals have reflected back to the sonic transducer, and during a later portion which includes the corresponding returned signals. The processor utilizes the sampled early portion to estimate a void ringdown signal of which represents performance of the sonic transducer in absence of returned signals being received. The processor compares the estimated void ringdown signal to the later portion of the ringdown signal and generates a metric based on the comparison. The processor utilizes the metric to determine a type of the surface, out of a plurality of surface types.
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Patent Agency Ranking
公开(公告)号：US20240183877A1
公开(公告)日：2024-06-06
申请号：US18495096
申请日：2023-10-26
Applicant: InvenSense, Inc.
Inventor： Adolfo Giambastiani , Luca Coronato , Edoardo Belloni , Stefano Dellea , Yaoching Wang , Giacomo Gafforelli
Abstract: A MEMS accelerometer package includes multiple cavities such that a change in pressure corresponding to a breach in one or more of the cavities is readily identified based on the output of a pressure-sensitive sensor such as a MEMS resonator. One or more mitigations may be initiated in response to the identification of the change in pressure.
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公开(公告)号：US20240180521A1
公开(公告)日：2024-06-06
申请号：US18527132
申请日：2023-12-01
Applicant: InvenSense, Inc.
Inventor： Leonardo BALDASARRE , Marco TRAVAGLIATI , Federica CONFALONIERI
CPC classification number: A61B8/4494 , A61B8/02 , A61B8/04 , A61B8/0891 , A61B8/4477 , A61B2560/02 , A61B2562/043 , A61B2562/046
Abstract: An ultrasonic sensing system including a plurality of ultrasonic transducers for placement on a human body proximate a blood vessel, a hardware controller for controlling operation of the plurality of ultrasonic transducers, and a digital processing module for processing the reflected ultrasonic signals. The plurality of ultrasonic transducers includes a first subset of ultrasonic transducers, wherein the ultrasonic transducers of the first subset are arranged linearly and a second subset of ultrasonic transducers, wherein the ultrasonic transducers of the second subset are arranged linearly, wherein the first subset of ultrasonic transducers is positioned parallel to the second subset of ultrasonic transducers at a fixed separation distance. The hardware controller configured to control transmission and receipt of reflected ultrasonic signals at the first subset of ultrasonic transducers and the second subset of ultrasonic transducers, wherein the reflected ultrasonic signals sense movement of a wall of the blood vessel.
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公开(公告)号：US20240180516A1
公开(公告)日：2024-06-06
申请号：US18527223
申请日：2023-12-01
Applicant: InvenSense, Inc.
Inventor： Leonardo BALDASARRE , Marco TRAVAGLIATI , Enrico BONI , Giuseppe PASQUALINI , Claudio SIMEONE
CPC classification number: A61B8/0891 , A61B8/0883 , A61B8/4227 , A61B8/4236 , A61B8/4494 , A61B8/5207 , A61B8/585 , A61B2562/227
Abstract: A wearable system for cardiovascular monitoring including an ultrasonic sensor module, a data storage unit, a processing unit, and a connection cable assembly for communicatively coupling the ultrasonic sensor module to the processing unit is described. The ultrasonic sensor module includes at least one array of ultrasonic transducers and at least one pre-amplification device coupled to the at least one array of ultrasonic transducers, the ultrasonic sensor module for placement on a human body proximate a blood vessel for performing cardiovascular monitoring. The processing unit includes hardware componentry for controlling transmission of ultrasonic signals and receipt of reflected ultrasonic signals at the at least one array of ultrasonic transducers, a digital processing module for performing on-board signal processing of the reflected ultrasonic signals received at the at least one array of ultrasonic transducers, and a power control system comprising an energy storage device for providing power to the system.
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公开(公告)号：US11965741B2
公开(公告)日：2024-04-23
申请号：US17956163
申请日：2022-09-29
Applicant: INVENSENSE, INC.
Inventor： Jacques Georgy , Zainab Syed , Christopher Goodall , Mohamed Atia , Aboelmagd Noureldin , Naser El-Sheimy
CPC classification number: G01C21/1654 , G01C21/206 , G01C25/005
Abstract: The present disclosure relates to methods of enhancing a navigation solution about a device and a platform, wherein the mobility of the device may be constrained or unconstrained within the platform, and wherein the navigation solution is provided even in the absence of normal navigational information updates (such as, for example, GNSS). More specifically, the present method comprises utilizing measurements from sensors (e.g. accelerometers, gyroscopes, magnetometers etc.) within the device to calculate and resolve the attitude of the device and the platform, and the attitude misalignment between the device and the platform.
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公开(公告)号：US11955993B2
公开(公告)日：2024-04-09
申请号：US17114087
申请日：2020-12-07
Applicant: INVENSENSE, INC.
Inventor： Michael Perrott
IPC: H03M3/00 , G06F1/3234 , G06F1/324 , H04R17/02 , H04W52/02
Abstract: An audio activity detector device is disclosed. The audio activity detector device comprises a closed loop feedback regulating circuit that supplies an input signal representative of a time-varying voltage signal to a quantizer circuit, wherein the quantizer circuit, as a function of the input signal, converts the input signal to a quantizer discrete-time signal; a first circuit that, as a function of the discrete-time signal, determines a key quantizer statistic value for the quantizer discrete-time signal; and a second circuit that, as a function of the key quantizer statistic value, determines a signal statistic value for the input signal and a gain control value.
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