Patents by Inventor JEROME ROMAIN ENJALBERT

JEROME ROMAIN ENJALBERT 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: 20220170958
    Abstract: A sensor package includes a first die having a capacitor sensor that includes an active sensing portion and a shield surrounding the active sensing portion. The sensor package further includes a second die that includes a voltage regulator configured to produce a shield voltage and a compensation circuit configured to produce a compensation signal. The voltage regulator and the compensation circuit are electrically coupled to the shield. The voltage regulator is configured to regulate the shield to the shield voltage and the compensation signal produced by the compensation circuit is configured to reduce an interference signal on the shield voltage. The compensation circuit includes one or more coupling capacitors that may be programmable capacitor arrays and calibration methodology entails selecting capacitance values for the programmable capacitor arrays that minimizes the error on an output signal of the sensor package.
    Type: Application
    Filed: November 30, 2021
    Publication date: June 2, 2022
    Inventor: Jerome Romain Enjalbert
  • Publication number: 20220089435
    Abstract: A sensor system includes first and second MEMS structures and a processing circuit. The first and second MEMS structures are configured to produce first and second output signals, respectively, in response to a physical stimulus. A method performed by the processing circuit entails receiving the first and second output signals and detecting a defective one of the first and second MEMS structures from the first and second output signals by determining that the first and second output signals are uncorrelated to one another. The method further entails utilizing only the first or the second output signal from a non-defective one of the MEMS structures to produce a processed output signal when one of the MEMS structures is determined to be defective and utilizing the first and second output signals from both of the MEMS structures to produce the processed output signal when neither of the MEMS structures is defective.
    Type: Application
    Filed: November 27, 2019
    Publication date: March 24, 2022
    Inventors: Marc Edward Holbein, Andrew C. McNeil, Jerome Romain Enjalbert
  • Publication number: 20210155473
    Abstract: A sensor system includes first and second MEMS structures and a processing circuit. The first and second MEMS structures are configured to produce first and second output signals, respectively, in response to a physical stimulus. A method performed by the processing circuit entails receiving the first and second output signals and detecting a defective one of the first and second MEMS structures from the first and second output signals by determining that the first and second output signals are uncorrelated to one another. The method further entails utilizing only the first or the second output signal from a non-defective one of the MEMS structures to produce a processed output signal when one of the MEMS structures is determined to be defective and utilizing the first and second output signals from both of the MEMS structures to produce the processed output signal when neither of the MEMS structures is defective.
    Type: Application
    Filed: November 27, 2019
    Publication date: May 27, 2021
    Inventors: Marc Edward Holbein, Andrew C. McNeil, Jerome Romain Enjalbert
  • Publication number: 20210123946
    Abstract: A sensor system includes a transducer for sensing a physical stimulus along at least two orthogonal axes and an excitation circuit. The transducer includes a movable mass configured to react to the physical stimulus and multiple differential electrode pairs of electrodes. Each of the electrode pairs is configured to detect displacement of the movable mass along one of the orthogonal axes. The excitation circuit is connectable to the electrodes in various electrode connection configurations, with different polarity schemes, that enable excitation and sampling of each of the orthogonal axes during every sensing period. For each sensing period, a composite output signal is produced that includes the combined information sensed along each of the orthogonal axes. The individual sense signals for each orthogonal axis may be extracted from the composite output signals.
    Type: Application
    Filed: September 22, 2020
    Publication date: April 29, 2021
    Inventors: Andrew C McNeil, Jerome Romain Enjalbert, Joel Cameron Beckwith, Jun Tang
  • Patent number: 10983141
    Abstract: A system includes a capacitive transducer, an excitation circuit, and a measuring circuit. The excitation circuit is configured to excite the capacitive transducer and the measuring circuit measures an output signal from the capacitive transducer responsive to the excitation voltage. The excitation circuit includes a voltage source for providing a first voltage in response to receipt of a supply voltage, a voltage generator coupled to the voltage source for receiving the first voltage and generating a second voltage that is greater than the supply voltage, and a control circuit coupled to the voltage source and the voltage generator. The control circuit is configured to provide any of a system ground, the first voltage, and the second voltage to first and second terminals of the capacitive transducer, and particularly, being configured to apply the system ground and the second voltage in the form of two consecutive stimuli with opposite polarities.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: April 20, 2021
    Assignee: NXP USA, Inc.
    Inventors: Thierry Dominique Yves Cassagnes, Joel Cameron Beckwith, Jerome Romain Enjalbert, Jalal Ouaddah
  • Patent number: 10545168
    Abstract: A micro-electro-mechanical system (MEMS) device and a method of testing a MEMS device. The device includes a MEMS sensor having first and second mobile elements, first and second electrodes arranged to deflect the mobile elements by the application of test voltages, and a differential detector circuit. The device also includes an input multiplexer circuit configured selectively to connect each electrode to a test voltage source to apply a plurality of test voltages to deflect the mobile elements during a test mode. The test voltages comprise a set of monotonically increasing test voltages and a set of monotonically decreasing voltages for performing a C(V) sweep to test for stiction. The device further includes an output multiplexer circuit configured selectively to connect the first mobile element and/or the second mobile element to a single one of the inputs of the detector circuit to detect the deflection of the mobile element.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: January 28, 2020
    Assignee: NXP USA, Inc.
    Inventor: Jerome Romain Enjalbert
  • Patent number: 10488430
    Abstract: A method for testing a multi-axis micro-electro-mechanical system(MEMS) acceleration sensor includes applying a first voltage to a first-axis excitation plate to move a first proof mass in contact with a proof mass stop. A second voltage is applied to a second-axis excitation plate while maintaining the first voltage to the first-axis excitation plate, to move the first proof mass in a direction orthogonal to the first-axis while in contact with the proof mass stop A reference voltage is applied to the first-axis excitation plate and a determination is made whether an output voltage of the MEMS device is higher than a threshold voltage. If the output voltage is higher than the threshold voltage ten stiction is detected and stiction recovery may therefore be preformed.
    Type: Grant
    Filed: October 9, 2017
    Date of Patent: November 26, 2019
    Assignee: NXP USA, Inc.
    Inventor: Jerome Romain Enjalbert
  • Patent number: 10436812
    Abstract: A MEMS acceleration device for measurement of the acceleration along three axes. The device includes capacitors, which capacitance changes under the influence of an acceleration acting upon the device. The change of capacitance for acceleration parallel to the substrate are, normally used with distinct capacitors. This device combines capacitors for using the change in capacitance for sensing in two independent and different directions parallel to the substrate thereby reusing the capacitor. Thereby allowing shrinking of the device while maintaining substantially the same sensitivity.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: October 8, 2019
    Assignee: NXP USA, Inc.
    Inventor: Jerome Romain Enjalbert
  • Patent number: 10394263
    Abstract: A method for voltage regulation includes reducing a power consumption of a voltage regulator during an IDLE phase, by disabling a feedback loop configured to regulate an internal voltage to a multiple of a reference voltage in response to the voltage regulator receiving a digital signal from a digital circuit. The internal voltage is proportional to an external voltage supplied to the digital circuit. A regulated accuracy of the external voltage is increased during a MEASUREMENT phase by enabling the feedback loop in response to the voltage regulator receiving the digital signal from the digital circuit.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: August 27, 2019
    Assignee: NXP USA, Inc.
    Inventors: Jerome Romain Enjalbert, Marianne Maleyran, Philippe Bernard Roland Lance, Jalal Ouaddah
  • Patent number: 10393769
    Abstract: A microelectromechanical device comprising a mass, an electromechanical transducer configured to convert, after damping the mass during a first damping period, displacement of the mass in the first and second directions into corresponding first and second electrical signals during corresponding first and second conversion time periods, a derivative unit configured to generate first and second control signals indicative of the velocity of the mass in the first and second direction, and a controller for providing the first and second control signals to respective first and second one or more electrodes of the electromechanical transducer for simultaneously damping the mass in the first and second directions with a first and second damping forces corresponding to the first and second velocity during the damping time period.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: August 27, 2019
    Assignee: NXP USA, Inc.
    Inventors: Olivier Bernal, Lavinia Elena Ciotirca, Thierry Dominique Yves Cassagnes, Jerome Romain Enjalbert, Helene Catherine Louise Tap
  • Patent number: 10263608
    Abstract: A circuit comprises an amplifier, a first switch arranged between an amplifier input and an amplifier output, a first capacitor, a first resistor, a second switch, a third switch, a first converter coupled to the first amplifier output, a register storing a last digital value, a second converter converting the stored last digital value into a corresponding voltage value, and a control circuit. The control circuit charges the first capacitor to the corresponding voltage value by coupling a second converter output to a second capacitor terminal and switching on the first switch, or by coupling the second converter output to the first capacitor terminal and switching on the third switch; switches on the first switch and the second switch for providing the input voltage signal to the first capacitor; and switches on the third switch for determining a subsequent digital value of the converted output amplifier signal.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: April 16, 2019
    Assignee: NXP USA, Inc.
    Inventors: Thierry Dominique Yves Cassagnes, Joel Cameron Beckwith, Jerome Romain Enjalbert, Dejan Mijuskovic
  • Publication number: 20190033902
    Abstract: A method for voltage regulation includes reducing a power consumption of a voltage regulator during an IDLE phase, by disabling a feedback loop configured to regulate an internal voltage to a multiple of a reference voltage in response to the voltage regulator receiving a digital signal from a digital circuit. The internal voltage is proportional to an external voltage supplied to the digital circuit. A regulated accuracy of the external voltage is increased during a MEASUREMENT phase by enabling the feedback loop in response to the voltage regulator receiving the digital signal from the digital circuit.
    Type: Application
    Filed: June 14, 2018
    Publication date: January 31, 2019
    Inventors: Jerome Romain Enjalbert, Marianne Maleyran, Philippe Bernard Roland Lance, Jalal Ouaddah
  • Publication number: 20180335444
    Abstract: A system includes a capacitive transducer, an excitation circuit, and a measuring circuit. The excitation circuit is configured to excite the capacitive transducer and the measuring circuit measures an output signal from the capacitive transducer responsive to the excitation voltage. The excitation circuit includes a voltage source for providing a first voltage in response to receipt of a supply voltage, a voltage generator coupled to the voltage source for receiving the first voltage and generating a second voltage that is greater than the supply voltage, and a control circuit coupled to the voltage source and the voltage generator. The control circuit is configured to provide any of a system ground, the first voltage, and the second voltage to first and second terminals of the capacitive transducer, and particularly, being configured to apply the system ground and the second voltage in the form of two consecutive stimuli with opposite polarities.
    Type: Application
    Filed: April 12, 2018
    Publication date: November 22, 2018
    Inventors: Thierry Dominique Yves Cassagnes, Joel Cameron Beckwith, Jerome Romain Enjalbert, Jalal Ouaddah
  • Publication number: 20180143218
    Abstract: A micro-electro-mechanical system (MEMS) device and a method of testing a MEMS device. The device includes a MEMS sensor having first and second mobile elements, first and second electrodes arranged to deflect the mobile elements by the application of test voltages, and a differential detector circuit. The device also includes an input multiplexer circuit configured selectively to connect each electrode to a test voltage source to apply a plurality of test voltages to deflect the mobile elements during a test mode. The test voltages comprise a set of monotonically increasing test voltages and a set of monotonically decreasing voltages for performing a C(V) sweep to test for stiction. The device further includes an output multiplexer circuit configured selectively to connect the first mobile element and/or the second mobile element to a single one of the inputs of the detector circuit to detect the deflection of the mobile element.
    Type: Application
    Filed: November 1, 2017
    Publication date: May 24, 2018
    Inventor: Jerome Romain Enjalbert
  • Publication number: 20180113147
    Abstract: A method is provided for testing a multi-axis micro-electro-mechanical system (MEMS) acceleration sensor. The method includes applying a first voltage to a first-axis excitation plate to move a first proof mass in contact with a proof mass stop; applying a second voltage to a second-axis excitation plate while maintaining the first voltage to the first-axis excitation plate, to move the first proof mass in a direction orthogonal to the first-axis while in contact with the proof mass stop; applying one or more low voltage excitation signals to the first-axis excitation plate; and detecting if an output voltage of the MEMS device is higher than a threshold voltage.
    Type: Application
    Filed: October 9, 2017
    Publication date: April 26, 2018
    Inventor: Jerome Romain Enjalbert
  • Publication number: 20170356928
    Abstract: A microelectromechanical device comprising a mass, an electromechanical transducer configured to convert, after damping the mass during a first damping period, displacement of the mass in the first and second directions into corresponding first and second electrical signals during corresponding first and second conversion time periods, a derivative unit configured to generate first and second control signals indicative of the velocity of the mass in the first and second direction, and a controller for providing the first and second control signals to respective first and second one or more electrodes of the electromechanical transducer for simultaneously damping the mass in the first and second directions with a first and second damping forces corresponding to the first and second velocity during the damping time period.
    Type: Application
    Filed: March 8, 2017
    Publication date: December 14, 2017
    Inventors: Olivier Bernal, Lavinia Elena Ciotirca, Thierry Dominique Yves Cassagnes, Jerome Romain Enjalbert, Helene Catherine Louise Tap
  • Publication number: 20170003315
    Abstract: A micro-electro-mechanical system (MEMS) device comprises a micro-electro-mechanical system (MEMS) sensor; a detector circuit; a controller circuit coupled with the MEMS sensor; a first connection arranged between a first output of the MEMS sensor and a first input of the detector circuit; a second connection arranged between a second output of the MEMS sensor and a second input of the detector circuit; and a first switch arranged in the first connection. The controller circuit is configured to open the first switch during a first test mode so as to connect only a single input of the detector circuit with an output of the MEMS sensor. A further switch may be provided to connect two outputs of the MEMS sensor to a single input of the detector circuit.
    Type: Application
    Filed: December 8, 2015
    Publication date: January 5, 2017
    Inventors: JEROME ROMAIN ENJALBERT, MARGARET LESLIE KNIFFIN, ANDREW C. MCNEIL
  • Publication number: 20160301403
    Abstract: A circuit comprises an amplifier, a first switch arranged between an amplifier input and an amplifier output, a first capacitor, a first resistor, a second switch, a third switch, a first converter coupled to the first amplifier output, a register storing a last digital value, a second converter converting the stored last digital value into a corresponding voltage value, and a control circuit. The control circuit charges the first capacitor to the corresponding voltage value by coupling a second converter output to a second capacitor terminal and switching on the first switch, or by coupling the second converter output to the first capacitor terminal and switching on the third switch; switches on the first switch and the second switch for providing the input voltage signal to the first capacitor; and switches on the third switch for determining a subsequent digital value of the converted output amplifier signal.
    Type: Application
    Filed: September 8, 2015
    Publication date: October 13, 2016
    Inventors: THIERRY DOMINIQUE YVES CASSAGNES, JOEL CAMERON BECKWITH, JEROME ROMAIN ENJALBERT, DEJAN MIJUSKOVIC
  • Publication number: 20160274141
    Abstract: A MEMS acceleration device for measurement of the acceleration along three axes. The device includes capacitors, which capacitance changes under the influence of an acceleration acting upon the device. The change of capacitance for acceleration parallel to the substrate are, normally used with distinct capacitors. This device combines capacitors for using the change in capacitance for sensing in two independent and different directions parallel to the substrate thereby reusing the capacitor. Thereby allowing shrinking of the device while maintaining substantially the same sensitivity.
    Type: Application
    Filed: December 28, 2015
    Publication date: September 22, 2016
    Inventor: JEROME ROMAIN ENJALBERT