Patents by Inventor Massimiliano Musazzi

Massimiliano Musazzi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240120894
    Abstract: An analog front-end architecture for a capacitive pressure sensor with a low-noise amplifier unit for amplification of sensor signals from the sensor. The amplifier unit includes first and second integrator units for integrating charges injected into input terminals of the amplifier unit and for outputting integrated charges to output terminals of the amplifier unit, a feedback unit, and a startup unit. The feedback unit reinjects integrated charges from the integrator unit into the input terminals of the amplifier unit. The startup unit is switchable between first and second switching states and is configured, in the first switching state, to route the charges injected into the input terminals past the first integrator unit into the second integrator unit and from the second integrator unit into the feedback unit, and, in the second switching state, to route charges injected into the input terminals directly into the first integrator unit.
    Type: Application
    Filed: December 13, 2021
    Publication date: April 11, 2024
    Inventors: Domenico Tangredi, Filippo David, Gabriele Cazzaniga, Manuel Salvatore Santoro, Massimiliano Musazzi
  • Patent number: 11933648
    Abstract: The described technology is generally directed towards a sensor output digitizer. The sensor output digitizer can comprise a multiplexer stage, a multi-stage analog to digital converter, and a digital output combiner. The multiplexer stage can be configured to sequentially select sensor outputs from one or more sensors, resulting in a stream of selected sensor outputs. The multi-stage analog to digital converter can be coupled with the multiplexer stage, and can be configured to convert the stream of selected sensor outputs into a stream of digitized outputs. The digital output combiner can be configured to re-scale and sum intermediate outputs of the multi-stage analog to digital converter to produce a stream of digitized sensor outputs.
    Type: Grant
    Filed: June 11, 2021
    Date of Patent: March 19, 2024
    Assignee: INVENSENSE, INC.
    Inventors: Federico Mazzarella, Massimiliano Musazzi
  • Publication number: 20240019320
    Abstract: An analog frontend architecture for a capacitive pressure sensor. The analog frontend architecture includes a low-noise amplifier unit for low-noise amplification of sensor signals of the capacitive pressure sensor, the low-noise amplifier unit including a first integrator unit and a second integrator unit, the first integrator unit being connected to input terminals of the low-noise amplifier unit, being designed as a boxcar integrator, and being configured to amplify sensor signals of the capacitive pressure sensor according to the boxcar integration technique, and the second integrator unit being connected to output terminals of the low-noise amplifier unit and being configured to integrate the amplified voltage signals of the first integrator unit.
    Type: Application
    Filed: November 16, 2021
    Publication date: January 18, 2024
    Inventors: Domenico Tangredi, Filippo David, Gabriele Cazzaniga, Manuel Salvatore Santoro, Massimiliano Musazzi
  • Publication number: 20230273236
    Abstract: A method for assessing the state of a sensor. The sensor comprises a deflectable micromechanical sensor structure for detecting a physical input variable and converting the physical input variable into an electrical sensor signal. A medium surrounding the sensor acts on the micromechanical sensor structure. The micromechanical sensor structure is deflectable using an excitation signal. The method includes: generating an excitation signal using a driver unit; outputting the excitation signal to the micromechanical sensor structure; deflecting the micromechanical sensor structure using the excitation signal; detecting a response behavior of the micromechanical sensor structure in response to the excitation signal; comparing the response behavior to a reference behavior to determine a measure of deviation for the response behavior in relation to the reference behavior; and assessing, based on the measure of deviation, the state of the sensor with respect to the presence of a deposit.
    Type: Application
    Filed: July 15, 2021
    Publication date: August 31, 2023
    Inventors: Joachim Kreutzer, David Slogsnat, Gabriele Cazzaniga, Massimiliano Musazzi, Timon Brueckner
  • Publication number: 20230266420
    Abstract: A method for testing a sensor within an electronic circuit. The sensor includes a first sensor element and a first reference element in a first branch, and a second sensor element and a second reference element in a second branch of the Wheatstone bridge circuit, which is in parallel with the first branch. The Wheatstone bridge circuit includes first and second inputs for first and second reference signals, respectively, which are each connected to the branches. The first branch includes a first signal output, and the second branch includes a second signal output between the second sensor element and the second reference element. The method includes: opening the first or second switch; applying a predefined first and/or second reference signal(s); and evaluating a first or second useful signal as to whether damage to the sensor or an electrical connection between the sensor and the electronic circuit exists.
    Type: Application
    Filed: September 16, 2021
    Publication date: August 24, 2023
    Inventors: Domenico Tangredi, Gabriele Cazzaniga, Gabriele Pozzato, Manuel Salvatore Santoro, Massimiliano Musazzi
  • Publication number: 20220333957
    Abstract: The described technology is generally directed towards a sensor output digitizer. The sensor output digitizer can comprise a multiplexer stage, a multi-stage analog to digital converter, and a digital output combiner. The multiplexer stage can be configured to sequentially select sensor outputs from one or more sensors, resulting in a stream of selected sensor outputs. The multi-stage analog to digital converter can be coupled with the multiplexer stage, and can be configured to convert the stream of selected sensor outputs into a stream of digitized outputs. The digital output combiner can be configured to re-scale and sum intermediate outputs of the multi-stage analog to digital converter to produce a stream of digitized sensor outputs.
    Type: Application
    Filed: June 11, 2021
    Publication date: October 20, 2022
    Inventors: Federico Mazzarella, Massimiliano Musazzi
  • Patent number: 10725068
    Abstract: A microelectromechanical (MEMS) accelerometer has a proof mass, a sense electrode, and an auxiliary electrode. The sense electrode is located relative to the proof mass such that a capacitance formed by the sense electrode and the proof mass changes in response to a linear acceleration along a sense axis of the accelerometer. The auxiliary electrode is located relative to the proof mass such that a capacitance formed by the auxiliary electrode and proof mass is static in response to the linear acceleration. A sense drive signal is applied at the sense electrode and an auxiliary drive signal is applied at the auxiliary electrode. The sense drive signal and the auxiliary drive signal have different frequencies. An error is identified based on a portion of a signal that is received from the accelerometer and that is responsive to the auxiliary drive signal. Compensation is performed at the accelerometer based on the identified error.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: July 28, 2020
    Assignee: InvenSense, Inc.
    Inventors: Giacomo Gafforelli, Luca Coronato, Adolfo Giambastiani, Federico Mazzarella, Massimiliano Musazzi, Michele Folz
  • Patent number: 10379137
    Abstract: A microelectromechanical (MEMS) accelerometer has a proof mass, a sense electrode, and an auxiliary electrode. The sense electrode is located relative to the proof mass such that a capacitance formed by the sense electrode and the proof mass changes in response to a linear acceleration along a sense axis of the accelerometer. The auxiliary electrode is located relative to the proof mass such that a capacitance formed by the auxiliary electrode and proof mass is static in response to the linear acceleration. A sense drive signal is applied at the sense electrode and an auxiliary drive signal is applied at the auxiliary electrode. The sense drive signal and the auxiliary drive signal have difference frequencies. A portion of a sensed signal at the sense drive frequency is used to determine linear acceleration while a portion of the sensed signal at the auxiliary drive frequency is used to identify damage within a sense path from the proof mass.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: August 13, 2019
    Assignee: PANASONIC CORPORATION
    Inventors: Giacomo Gafforelli, Luca Coronato, Adolfo Giambastiani, Federico Mazzarella, Massimiliano Musazzi, Michele Folz
  • Patent number: 10317426
    Abstract: An accelerometer has a plurality of proof masses and a plurality of sense electrodes, which collectively form at least two capacitors. A first sense drive signal is applied to a first capacitor and a second sense drive signal is applied to a second capacitor. Both of the sense drive signals have the same sense drive frequency. Capacitance signals are sensed from each of the first capacitor and second capacitor, and a common mode component of the capacitance signals is determined. A capacitor error is identified based on the common mode component.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: June 11, 2019
    Assignee: PANASONIC CORPORATION
    Inventors: Luca Coronato, Giacomo Gafforelli, Adolfo Giambastiani, Federico Mazzarella, Massimiliano Musazzi, Michele Folz
  • Patent number: 9753062
    Abstract: A system and method for making accurate current measurements by determining the differential voltage drop across a resistor in series with the load in the presence of large common mode voltages. A compensating voltage equal in magnitude but 180 degrees out of phase with a common mode voltage is generated and applied to a network of resistors connected to a measurement amplifier, thereby significantly reducing the magnitude of the common mode voltage at the measurement amplifier's inputs. An error correction voltage is generated and applied to the output of the measurement amplifier to compensate for errors in the values of the resistor network.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: September 5, 2017
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Federico Mazzarella, Massimiliano Musazzi
  • Publication number: 20170168086
    Abstract: A microelectromechanical (MEMS) accelerometer has a proof mass, a sense electrode, and an auxiliary electrode. The sense electrode is located relative to the proof mass such that a capacitance formed by the sense electrode and the proof mass changes in response to a linear acceleration along a sense axis of the accelerometer. The auxiliary electrode is located relative to the proof mass such that a capacitance formed by the auxiliary electrode and proof mass is static in response to the linear acceleration. A sense drive signal is applied at the sense electrode and an auxiliary drive signal is applied at the auxiliary electrode. The sense drive signal and the auxiliary drive signal have difference frequencies. A portion of a sensed signal at the sense drive frequency is used to determine linear acceleration while a portion of the sensed signal at the auxiliary drive frequency is used to identify damage within a sense path from the proof mass.
    Type: Application
    Filed: November 29, 2016
    Publication date: June 15, 2017
    Applicant: INVENSENSE INTERNATIONAL, INC.
    Inventors: Giacomo Gafforelli, Luca Coronato, Adolfo Giambastiani, Federico Mazzarella, Massimiliano Musazzi, Michele Folz
  • Publication number: 20170168087
    Abstract: A microelectromechanical (MEMS) accelerometer has a proof mass, a sense electrode, and an auxiliary electrode. The sense electrode is located relative to the proof mass such that a capacitance formed by the sense electrode and the proof mass changes in response to a linear acceleration along a sense axis of the accelerometer. The auxiliary electrode is located relative to the proof mass such that a capacitance formed by the auxiliary electrode and proof mass is static in response to the linear acceleration. A sense drive signal is applied at the sense electrode and an auxiliary drive signal is applied at the auxiliary electrode. The sense drive signal and the auxiliary drive signal have different frequencies. An error is identified based on a portion of a signal that is received from the accelerometer and that is responsive to the auxiliary drive signal. Compensation is performed at the accelerometer based on the identified error.
    Type: Application
    Filed: November 29, 2016
    Publication date: June 15, 2017
    Applicant: INVENSENSE INTERNATIONAL, INC.
    Inventors: Giacomo Gafforelli, Luca Coronato, Adolfo Giambastiani, Federico Mazzarella, Massimiliano Musazzi, Michele Folz
  • Publication number: 20170168088
    Abstract: An accelerometer has a plurality of proof masses and a plurality of sense electrodes, which collectively form at least two capacitors. A first sense drive signal is applied to a first capacitor and a second sense drive signal is applied to a second capacitor. Both of the sense drive signals have the same sense drive frequency. Capacitance signals are sensed from each of the first capacitor and second capacitor, and a common mode component of the capacitance signals is determined. A capacitor error is identified based on the common mode component.
    Type: Application
    Filed: December 6, 2016
    Publication date: June 15, 2017
    Applicant: InvenSense, Inc.
    Inventors: Luca Coronato, Giacomo Gafforelli, Adolfo Giambastiani, Federico Mazzarella, Massimiliano Musazzi, Michele Folz
  • Publication number: 20150260764
    Abstract: A system and method for making accurate current measurements by determining the differential voltage drop across a resistor in series with the load in the presence of large common mode voltages. A compensating voltage equal in magnitude but 180 degrees out of phase with a common mode voltage is generated and applied to a network of resistors connected to a measurement amplifier, thereby significantly reducing the magnitude of the common mode voltage at the measurement amplifier's inputs. An error correction voltage is generated and applied to the output of the measurement amplifier to compensate for errors in the values of the resistor network.
    Type: Application
    Filed: March 23, 2015
    Publication date: September 17, 2015
    Inventors: Federico Mazzarella, Massimiliano Musazzi