Patents Assigned to Invensense Inc.
  • Patent number: 11517252
    Abstract: A hearable comprises at least one microphone coupled with a wearable structure and a sensor processing unit disposed within the wearable structure and coupled with the microphone. A portion of the wearable structure is configured to be disposed within a user's ear. The sensor processing unit acquires audio data from the at least one microphone and head motion data from at least one motion sensor of the sensor processing unit. The head motion data describes motions of the user's head and comprises cranium motion data and mandible motion data. The sensor processing unit separates the mandible motion data from the head motion data, synchronizes the mandible motion data and the audio data into a synchronized data stream; classifies an activity of the head during a portion of the synchronized data stream; and generates a health indicator for the user based on the activity and the synchronized data stream.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: December 6, 2022
    Assignee: INVENSENSE, INC.
    Inventors: Jibran Ahmed, Karthik Katingari, Nicolas Sauvage
  • Patent number: 11517938
    Abstract: An electronic device includes a substrate layer having a front surface and a back surface opposite the front surface, a plurality of ultrasonic transducers formed on the front surface of the substrate layer, wherein the plurality of ultrasonic transducers generate backward waves during operation, the backward waves propagating through the substrate layer, and a plurality of substrate structures formed within the back surface of the substrate layer, the plurality of substrate structures configured to modify the backward waves during the operation.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: December 6, 2022
    Assignee: InvenSense, Inc.
    Inventors: Mei-Lin Chan, Nikhil Apte, Renata Melamud Berger
  • Patent number: 11515465
    Abstract: A piezoelectric micromachined ultrasound transducer (PMUT) array may comprise PMUT devices with respective piezoelectric layers and electrode layers. Parasitic capacitance can be reduced when an electrode layer is not shared across PMUT devices but may expose the devices to electromagnetic interference (EMI). A conductive layer located within the structural layer or on a shared plane with the electrode layers may reduce EMI affecting the PMUT array operation.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: November 29, 2022
    Assignee: INVENSENSE, INC.
    Inventors: Nikhil Apte, Chienliu Chang, Shreyas Thakar, Mei-Lin Chan
  • Patent number: 11507163
    Abstract: Facilitating powering up/down respective analog circuits of mixed-signal devices utilizing a reconfigurable power sequencer component and corresponding reconfigurable sequencer processing unit(s) is presented herein. A system can comprise a mixed-signal component comprising a group of analog circuits comprising respective inputs to facilitate a power-up and a power-down of respective portions of the analog circuits; and a reconfigurable power sequencer component that obtains, from a reconfigurable memory of the system, reprogrammable information representing respective timed sequences of digital outputs electronically coupled to the respective inputs of the group of analog circuits, and based on the reprogrammable information, generates the respective timed sequences of the digital outputs to facilitate the power-up and the power-down of the respective portions of the analog circuits.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: November 22, 2022
    Assignee: INVENSENSE, INC.
    Inventors: Giuseppe Santillo, Biswajit Datta
  • Patent number: 11508346
    Abstract: A package design for a micromachined ultrasound transducer (MUT) utilizing curved geometry to control the presence and frequency of acoustic resonant modes is described. The approach consists of reducing in number and curving the reflecting surfaces present in the package cavity to adjust the acoustic resonant frequencies to locations outside the band of interest. The design includes a cavity characterized by a curved geometry and a MUT mounted to a side of a substrate facing the cavity with a sound emitting portion of the MUT facing an opening in the substrate. The substrate is disposed over an opening of the cavity with the substrate oriented such that the MUT located within the cavity.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: November 22, 2022
    Assignee: InvenSense, Inc.
    Inventors: Stefon Shelton, Andre Guedes, David Horsley
  • Patent number: 11499884
    Abstract: A device includes a sensor die, an electrical coupling, a substrate, a liquid detection unit, and a housing unit. The sensor die is coupled to the substrate via the electrical coupling. The liquid detection unit electrically is coupled to the sensor die. The housing unit and the substrate are configured to house the sensor die, the liquid detection unit, and the electrical coupling. The housing unit comprises an opening that exposes the sensor die to an environment external to the housing unit. The liquid detection unit detects presence of liquid within an interior environment of the housing unit. In some embodiments, the device further includes a gel filled within the interior environment of the housing unit covering the sensor die and the substrate. The gel, e.g., silicone, fluoro silicone, etc., is configured to protect the sensor die, the electrical coupling, and the substrate from exposure to the liquid.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: November 15, 2022
    Assignee: InvenSense, Inc.
    Inventors: Calin Miclaus, Chung-Hsien Lin, Jye Ren, Tim Piessens, Pei-Wen Yen, Manish Sharma-Kulamarva
  • Publication number: 20220355339
    Abstract: An ultrasonic transducer device comprises a controller and a differential piezoelectric micromachined ultrasonic transducer with a membrane later, a bottom electrode layer, a piezoelectric layer, and a top electrode layer comprising a first electrode with a positive voltage to displacement coefficient and a second electrode with a negative voltage to displacement coefficient. During a first period, the controller electrically decouples a first output of a first driver from the first electrode, electrically decouples a second output of a second driver from the second electrode, and electrically couples the first and second electrodes to equalize charge between them. During a second period, the controller electrically decouples the first and second electrodes, electrically couples the first output with the first electrode, and electrically couples the second output with the second electrode; where waveforms on the first and second outputs during the second time period are out of phase with one another.
    Type: Application
    Filed: May 5, 2021
    Publication date: November 10, 2022
    Applicant: InvenSense, Inc.
    Inventors: Mitchell H. KLINE, Richard J. PRZYBYLA
  • Patent number: 11490186
    Abstract: Robust microelectromechanical systems (MEMS) sensors and related manufacturing techniques are described. Disclosed MEMS membranes and backplate structures facilitate manufacturing robust MEMS microphones. Exemplary MEMS membranes and backplate structures can comprise edge pattern holes having a length to width ratio greater than one and/or configured in a radial arrangement. Disclosed implementations can facilitate providing robust MEMS membranes and backplate structures, having edge pattern holes with a profile resembling at least one of an oval, an egg, an ellipse, a droplet, a cone, or a capsule or similar suitable configurations according to disclosed embodiments.
    Type: Grant
    Filed: March 24, 2021
    Date of Patent: November 1, 2022
    Assignees: INVENSENSE, INC., TDK ELECTRONICS AG
    Inventors: Tsung Lin Tang, Chia-Yu Wu, Chung-Hsien Lin, Dennis Mortensen, Pirmin Rombach
  • Publication number: 20220342069
    Abstract: A robotic cleaning appliance includes a housing, surface treatment item, surface type detection sensor, and processor. The sensor emits sonic signals toward a surface being traversed and receives corresponding returned signals from the surface. The returned signals are used for surface type detection and include directly reflected primary returned signals and multi-path reflected secondary returned signals which return at a later time than the primary returned signals. The processor selects a window of time after transmission of a sonic signal such that the returned signals in the window comprise at least a portion of the secondary returned signals, wherein the window is related to round trip time-of-flight of the returned signals; processes the returned signals falling in the window to achieve a reflectivity metric; compares the reflectivity metric to a stored value; and based on the comparison, determines which surface type of a plurality of surface types has been detected.
    Type: Application
    Filed: July 11, 2022
    Publication date: October 27, 2022
    Applicant: InvenSense, Inc.
    Inventors: James Alexander GORDON, David HORSLEY, Sebastien RICCARDI
  • Publication number: 20220331837
    Abstract: An ultrasonic transceiver system includes a transmitter block, a receiver block, a state machine, a computer unit. The transmitter block contains circuitry configured to drive an ultrasound transducer. The receiver block contains circuitry configured to receive signals from the ultrasound transducer and convert the signals into digital data. The state machine is coupled to the transmitter and receiver blocks and contains circuitry configured to act as a controller for those blocks. The computing unit is coupled to the transmitter block, the receiver block, and the state machine and is configured to drive the transmitter block and process data received from the receiver block by executing instructions of a program. The program memory is coupled to the computing unit and is configured to store the program. The computing unit is configured to be reprogrammed with one or more additional programs stored in the program memory.
    Type: Application
    Filed: June 27, 2022
    Publication date: October 20, 2022
    Applicant: INVENSENSE, INC.
    Inventors: Richard PRYZBYLA, Mitchell Kline, David Horsley
  • Patent number: 11471912
    Abstract: A Piezoelectric Micromachined Ultrasonic Transducer (PMUT) device is provided. The PMUT includes a substrate and an edge support structure connected to the substrate. A membrane is connected to the edge support structure such that a cavity is defined between the membrane and the substrate, where the membrane configured to allow movement at ultrasonic frequencies. The membrane comprises a piezoelectric layer and first and second electrodes coupled to opposing sides of the piezoelectric layer. For operation in a Capacitive Micromachined Ultrasonic Transducer (CMUT) mode, a third electrode is disposed on the substrate and separated by an air gap in the cavity from the second electrode. Also provided are an integrated MEMS array, a method for operating an array of PMUT/CMUT dual-mode devices, and a PMUT/CMUT dual-mode device.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: October 18, 2022
    Assignee: InvenSense, Inc.
    Inventors: Nikhil Apte, Renata Melamud Berger, Michael Daneman
  • Patent number: 11473909
    Abstract: A MEMS system includes a gyroscope that generates a quadrature signal and an angular velocity signal. The MEMS system further includes an accelerometer that generates a linear acceleration signal. The quadrature signal and the linear acceleration signal are received by a processing circuitry that modifies the linear acceleration signal based on the quadrature signal to determine linear acceleration.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: October 18, 2022
    Assignee: INVENSENSE, INC.
    Inventors: Pietro Scafidi, Kevin Hughes, Daniele Ghezzi
  • Publication number: 20220326185
    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.
    Type: Application
    Filed: April 9, 2021
    Publication date: October 13, 2022
    Applicant: InvenSense, Inc.
    Inventors: Mitchell H. KLINE, Joe YOUSSEF
  • Patent number: 11466986
    Abstract: Microelectromechanical systems (MEMS) gyroscopes and related sense frequency tracking techniques are described. Various embodiments facilitate sense frequency tracking and offset and/or sensitivity change compensation. Exemplary embodiments can comprise receiving a sense signal at an output of a MEMS gyroscope and determining a sense resonant frequency of the sense signal. In addition, exemplary methods can comprise generating an input sine wave with a frequency of the sense resonant frequency of the sense signal injecting the input sine wave into the MEMS gyroscope, to facilitate sense frequency tracking.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: October 11, 2022
    Assignee: INVENSENSE, INC.
    Inventors: Sriraman Dakshinamurthy, Carlo Pinna, Ronak Chetan Desai
  • Patent number: 11467025
    Abstract: An alternate venting path can be employed in a sensor device for pressure equalization. A sensor component of the device can comprise a diaphragm component and/or backplate component disposed over an acoustic port of the device. The diaphragm component can be formed with no holes to prevent liquid or particles from entering a back cavity of the device, or gap between the diaphragm component and backplate component. A venting port can be formed in the device to create an alternate venting path to the back cavity for pressure equalization for the diaphragm component. A venting component, comprising a filter, membrane, and/or hydrophobic coating, can be associated with the venting port to inhibit liquid and particles from entering the back cavity via the venting port, without degrading performance of the device. The venting component can be designed to achieve a desired low frequency corner of the sensor frequency response.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: October 11, 2022
    Assignee: INVENSENSE, INC.
    Inventors: Jeremy Parker, Kieran Harney
  • Patent number: 11468508
    Abstract: A capturable code for automatically formatting and addressing a text message to apply for an offer is disclosed. The method interacting with, via a mobile device of a user, a capturable code and automatically generating a text message on the mobile device in response to the interaction. The automatic generation automatically provides an address for the text message, and automatically formats the text message. Providing, at the mobile device and into the text message, at least one device identifier (ID) for the mobile device and a user identifier (ID). Sending, via the mobile device, the text message to the address. Receiving, at the mobile device, a prepopulated form, which is prefilled with user specific information. Verifying, at the mobile device, the user specific information. Receiving, at the mobile device and upon a credit approval, a new credit account in a ready-to-use format.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: October 11, 2022
    Assignee: InvenSense, Inc.
    Inventors: Chris Anderson, Manoj Ram Tammina, Jess Lawrence
  • Patent number: 11460957
    Abstract: An ultrasonic sensor includes a two-dimensional array of ultrasonic transducers, a contact layer, a matching layer between the two-dimensional array and the contact layer, where the matching layer has a non-uniform thickness, and an array controller configured to control activation of ultrasonic transducers during an imaging operation for imaging a plurality of pixels within the two-dimensional array of ultrasonic transducers. During the imaging operation, the array controller is configured to activate different subsets of ultrasonic transducers associated with different regions of the two-dimensional array of ultrasonic transducers at different transmission frequencies, where the different frequencies are determined such that a thickness of the matching layer at a region is substantially equal to a quarter wavelength of the first transmission frequency for the region.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: October 4, 2022
    Assignee: InvenSense, Inc.
    Inventors: Mark Jennings, Mei-Lin Chan
  • Patent number: 11463830
    Abstract: A microelectromechanical system (MEMS) microphone includes a cavity to receive an acoustic signal. The acoustic signal causes movement of a diaphragm relative to one or more other surfaces, which in turn results in an electrical signal representative of the received acoustic signal. A light sensor is included within the packaging of the MEMS microphone such that an output of the light sensor is representative of a light signal received with the acoustic signal. The output of the light sensor is used to modify the electrical signal representative of the received acoustic signal in a manner that limits light interference with an acoustical output signal.
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: October 4, 2022
    Assignee: InvenSense, Inc.
    Inventor: Miroslav Svajda
  • Patent number: 11440052
    Abstract: An electronic device includes a plurality of CMOS control elements arranged in a two-dimensional array and a plurality of MEMS devices. Each CMOS control element of the plurality of CMOS control elements includes at least one of a low voltage semiconductor device, a high voltage PMOS semiconductor device, and a high voltage NMOS semiconductor device. Each MEMS device of the plurality of MEMS devices is associated with a CMOS control element of the plurality of CMOS control elements. The plurality of CMOS control elements are arranged in the two-dimensional array such that low voltage semiconductor devices are only adjacent to other low voltage semiconductor devices, high voltage PMOS semiconductor devices are only adjacent to other high voltage PMOS semiconductor devices, and high voltage NMOS semiconductor devices are only adjacent to other high voltage NMOS semiconductor devices.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: September 13, 2022
    Assignee: InvenSense, Inc.
    Inventors: James Christian Salvia, Michael H. Perrott, Marian Voros, Eldwin Ng, Julius Ming-Lin Tsai, Nikhil Apte
  • Patent number: 11440050
    Abstract: An ultrasonic transceiver system includes a transmitter block, a receiver block, a state machine, a computer unit. The transmitter block contains circuitry configured to drive an ultrasound transducer. The receiver block contains circuitry configured to receive signals from the ultrasound transducer and convert the signals into digital data. The state machine is coupled to the transmitter and receiver blocks and contains circuitry configured to act as a controller for those blocks. The computing unit is coupled to the transmitter block, the receiver block, and the state machine and is configured to drive the transmitter block and process data received from the receiver block by executing instructions of a program. The program memory is coupled to the computing unit and is configured to store the program. The computing unit is configured to be reprogrammed with one or more additional programs stored in the program memory.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: September 13, 2022
    Assignee: InvenSense, Inc.
    Inventors: Richard Przybyla, Mitchell Kline, David Horsley