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公开(公告)号：US11340250B2
公开(公告)日：2022-05-24
申请号：US16212075
申请日：2018-12-06
Applicant: InvenSense, Inc.
Inventor： Sebastian Riccardi , Karthik Katingari , Joe Youssef
IPC: G01P13/00 , G01S11/14 , G01S11/12 , G01S11/16 , G06F3/038 , G06F3/033 , G01C21/16 , G06F3/0346 , G01S5/18 , G06F3/01 , G01D18/00
Abstract: A synchronization system for an acoustic signal-based and inertial signal-based positioning system is provided that generates a magnetic field as a synchronization signal. The modulated magnetic synchronization signal is transmitted by a transmitter of the positioning system and received by the receiver of the positioning system. The receiver may make an acoustic position determination for the transmitter based on a received modulated synchronization signal and may make an inertial position determination for the transmitter based on the received inertial signal, such that the acoustic position determination and the inertial position determination are fused.
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公开(公告)号：US20220144624A1
公开(公告)日：2022-05-12
申请号：US17583860
申请日：2022-01-25
Applicant: InvenSense, Inc.
Inventor： Alexander Castro , Matthew Thompson , Leonardo Baldasarre , Sarah Nitzan , Houri Johari-Galle
IPC: B81B3/00 , G01P15/125
Abstract: A MEMS sensor includes a proof mass that is suspended over a substrate. A sense electrode is located on a top surface of the substrate parallel to the proof mass, and forms a capacitor with the proof mass. The sense electrodes have a plurality of slots that provide improved performance for the MEMS sensor. A measured value sensed by the MEMS sensor is determined based on the movement of the proof mass relative to the slotted sense electrode.
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公开(公告)号：US20220128365A1
公开(公告)日：2022-04-28
申请号：US17082490
申请日：2020-10-28
Applicant: INVENSENSE, INC.
Inventor： Gennadii Berkovich , Dmitry Churikov
Abstract: Vehicle position is determined using magnetic field measurements within an indoor environment. Magnetic field measurements and sensor information are obtained from the vehicle and magnetic map information is obtained for the indoor environment. Parameters of vehicle motion are derived from the sensor information. The magnetic field measurements are processed to mitigate vehicular interference and then compensated for a magnetometer bias induced at least in part by the vehicle. Vehicle position is determined based at least in part on the compensated magnetic field magnetic measurements, the magnetic map information and the parameters of vehicle motion.
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公开(公告)号：US20220116196A1
公开(公告)日：2022-04-14
申请号：US17314850
申请日：2021-05-07
Applicant: INVENSENSE, INC.
Inventor： Miroslav Svajda , Dusan Vecera , Igor Mucha
Abstract: Technologies are provided for adaptive control of bias settings in a digital microphone. In some embodiments, a device includes a first component that provides data indicative of a clock frequency of operation in a functional mode of a digital microphone. The clock frequency clocks one or more microphone components having switching activity. The device also can include a second component that determines, using the clock frequency, an amount of bias current to supply to at least a first microphone component of the one or more microphone components. The device can further include a memory device that retains control parameters that include at least one of a first subset of parameters defining a relationship between current and frequency and a second subset of parameters defining a quantization of the relationship. The quantization including multiple bias current levels for respective frequency intervals.
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公开(公告)号：US11301552B2
公开(公告)日：2022-04-12
申请号：US16223116
申请日：2018-12-18
Applicant: InvenSense, Inc.
Inventor： Ilya Gurin , Karthik Katingari
Abstract: A medical device comprises a surface, an ultrasonic sensor, and a processor. The surface is configured to interact with skin of a patient during operation of the medical device. The ultrasonic sensor is disposed beneath the surface and configured to ultrasonically measure data with respect to a region above the surface. The processor is coupled with the ultrasonic sensor. Responsive to detection of a finger in contact with the surface, the processor is configured to operate the ultrasonic sensor to capture a fingerprint of the finger. Responsive to authentication that a person associated with the captured fingerprint is authorized to use the medical device, the processor is configured to activate operation of the medical device.
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Patent Agency Ranking
公开(公告)号：US11267699B2
公开(公告)日：2022-03-08
申请号：US16796310
申请日：2020-02-20
Applicant: INVENSENSE, INC.
Inventor： Alan Cuthbertson , Daesung Lee
Abstract: A modification to rough polysilicon using ion implantation and silicide is provided herein. A method can comprise depositing a hard mask on a single crystal silicon, patterning the hard mask, and depositing metal on the single crystal silicon. The method also can comprise forming silicide based on causing the metal to react with exposed silicon of the single crystal silicon. Further, the method can comprise removing unreacted metal and stripping the hard mask from the single crystal silicon. Another method comprises forming a MEMS layer, wherein the forming comprises fusion bonding a handle layer with a device layer. The method also can comprise implanting rough polysilicon on the device layer. Implanting the rough polysilicon can comprise performing ion implantation of the rough polysilicon. Further, the method can comprise performing high temperature annealing. The high temperature can comprise a temperature in a range between around 700 and 1100 degrees Celsius.
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公开(公告)号：US20220057209A1
公开(公告)日：2022-02-24
申请号：US17443806
申请日：2021-07-27
Applicant: InvenSense, Inc.
Inventor： Vito Avantaggiati
IPC: G01C19/5712
Abstract: A micro electro-mechanical system (MEMS) gyroscope may include a suspended spring-mass system, and processing circuitry configured to receive a drive sense signal and a proof mass sense signal generated by the spring-mass system. The processing circuitry may be configured to derive a drive velocity in-phase signal from a drive displacement in-phase signal and to derive a drive velocity quadrature signal from a drive displacement quadrature signal. A compensated in-phase signal and a compensated quadrature signal may be determined based upon at least the drive displacement in-phase signal, the drive displacement quadrature signal, the drive velocity in-phase signal, the drive velocity quadrature signal, the sense displacement in-phase signal, and the sense displacement quadrature signal.
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68.发明授权公开(公告)号：US11243300B2
公开(公告)日：2022-02-08
申请号：US16814917
申请日：2020-03-10
Applicant: InvenSense, Inc.
Inventor： Mark Jennings , Romain Fayolle , Amaury Robles , Pierre Peiffer
Abstract: In a method for operating a fingerprint sensor including a plurality of ultrasonic transducers and a presence sensor, the presence sensor proximate the fingerprint sensor is activated, where the presence sensor is for detecting interaction between an object and the fingerprint sensor. Subsequent to detecting interaction between an object and the fingerprint sensor at the presence sensor, a subset of ultrasonic transducers of the fingerprint sensor is activated, the subset of ultrasonic transducers for determining whether the object is a human finger, where the subset of ultrasonic transducers is proximate the presence sensor such that the subset of ultrasonic transducers and the presence sensor can concurrently interact with the object.
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公开(公告)号：US20210396718A1
公开(公告)日：2021-12-23
申请号：US17467076
申请日：2021-09-03
Applicant: InvenSense, Inc.
Inventor： Bruno W. GARLEPP , Michael H. PERROTT , James Christian SALVIA
IPC: G01N29/34 , B06B1/06 , G10K11/34 , G11C19/28 , G11C19/38 , H01L41/047 , H01L41/113 , H03K17/96
Abstract: In a method of using an ultrasonic sensor comprising a two-dimensional array of ultrasonic transducers, a plurality of ultrasonic signals are transmitted according to a beamforming pattern at a position of the two-dimensional array. The beamforming pattern focuses the plurality of ultrasonic signals to location above the two-dimensional array, wherein the beamforming pattern identifies ultrasonic transducers of the two-dimensional array that are activated during transmission of the ultrasonic signals, and wherein at least some ultrasonic transducers of the beamforming pattern are phase delayed with respect to other ultrasonic transducers of the beamforming pattern. At least one reflected ultrasonic signal is received at the position according to a receive pattern, wherein the receive pattern identifies at least one ultrasonic transducers of the two-dimensional array that is activated during the receiving. The transmitting and the receiving are repeated at a plurality of positions of the two-dimensional array.
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公开(公告)号：US20210396519A1
公开(公告)日：2021-12-23
申请号：US17467145
申请日：2021-09-03
Applicant: INVENSENSE, INC.
Inventor： Doruk Senkal , Robert Hennessy , Houri Johari-Galle , Joe Seeger
IPC: G01C19/5712 , G01C19/5783
Abstract: The subject disclosure provides exemplary 3-axis (e.g., GX, GY, and GZ) linear and angular momentum balanced vibratory rate gyroscope architectures with fully-coupled sense modes. Embodiments can employ balanced drive and/or balanced sense components to reduce induced vibrations and/or part to part coupling. Embodiments can comprise two inner frame gyroscopes for GY sense mode and an outer frame or saddle gyroscope for GX sense mode and drive system coupling, drive shuttles coupled to the two inner frame gyroscopes or outer frame gyroscope, and four GZ proof masses coupled to the inner frame gyroscopes for GZ sense mode. Components can be removed from an exemplary overall architecture to fabricate a single axis or two axis gyroscope and/or can be configured such that a number of proof-masses can be reduced in half from an exemplary overall architecture to fabricate a half-gyroscope. Other embodiments can employ a stress isolation frame to reduce package induced stress.
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