Patents by Inventor Jouni Erkkila
Jouni Erkkila 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).
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Patent number: 11293756Abstract: A microelectromechanical gyroscope includes a drive loop having a drive element and a drive loop circuitry. The drive loop circuitry includes a clock generating circuitry for generating from the quadrature-phase detection signal a test clock signal, an angular rate phase demodulation signal and a quadrature phase demodulation signal. A sense loop includes a sense element and sense loop circuitry for detecting angular rate and producing a force-feedback signal. A test signal generator receives a quadrature-phase detection signal to be used as a quadrature-phase carrier signal and the test clock signal A summing element sums a test signal with the force-feedback signal to form a sense feedback signal. A rate phase demodulator produces a rate signal by demodulating a sense signal received from the sense loop with the angular rate phase demodulation signal, and a quadrature-phase demodulator produces a quadrature-phase output signal.Type: GrantFiled: June 2, 2020Date of Patent: April 5, 2022Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Lasse Aaltonen, Jouni Erkkilä
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Patent number: 11002957Abstract: An optical device that provides a broadened circular scanning pattern. The device includes a reflector system dimensioned to form a coupled oscillator with two modes of oscillation for circular tilt motion, a first mode oscillation in a first resonance frequency and a second mode of oscillation in a second resonance frequency that is different from the first resonance frequency. A signal processing element is configured to control the actuation signals to maintain a first amplitude in the first mode of oscillation, and a second amplitude in the second mode of oscillation.Type: GrantFiled: May 3, 2019Date of Patent: May 11, 2021Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Jouni Erkkilä, Tero Sillanpää, Matti Liukku, Anssi Blomqvist
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Publication number: 20200400433Abstract: A microelectromechanical gyroscope includes a drive loop having a drive element and a drive loop circuitry. The drive loop circuitry includes a clock generating circuitry for generating from the quadrature-phase detection signal a test clock signal, an angular rate phase demodulation signal and a quadrature phase demodulation signal. A sense loop includes a sense element and sense loop circuitry for detecting angular rate and producing a force-feedback signal. A test signal generator receives a quadrature-phase detection signal to be used as a quadrature-phase carrier signal and the test clock signal A summing element sums a test signal with the force-feedback signal to form a sense feedback signal. A rate phase demodulator produces a rate signal by demodulating a sense signal received from the sense loop with the angular rate phase demodulation signal, and a quadrature-phase demodulator produces a quadrature-phase output signal.Type: ApplicationFiled: June 2, 2020Publication date: December 24, 2020Inventors: Lasse AALTONEN, Jouni ERKKILÄ
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Publication number: 20190339514Abstract: An optical device that provides a broadened circular scanning pattern. The device includes a reflector system dimensioned to form a coupled oscillator with two modes of oscillation for circular tilt motion, a first mode oscillation in a first resonance frequency and a second mode of oscillation in a second resonance frequency that is different from the first resonance frequency. A signal processing element is configured to control the actuation signals to maintain a first amplitude in the first mode of oscillation, and a second amplitude in the second mode of oscillation.Type: ApplicationFiled: May 3, 2019Publication date: November 7, 2019Inventors: Jouni ERKKILÄ, Tero SILLANPÄÄ, Matti LIUKKU, Anssi BLOMQVIST
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Patent number: 9696375Abstract: A capacitive sensor that includes at least one capacitive element and a switched-capacitor readout circuit part for detecting at least one signal capacitance that results from motions of the capacitive element. The self-test bias voltage of the actuation circuit part is coupled to the capacitive element during a first period that is synchronized to the front end reset period and occurs when the self-test of the capacitive sensor is enabled by the self-test controller.Type: GrantFiled: October 7, 2015Date of Patent: July 4, 2017Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Lasse Aaltonen, Jouni Erkkilä
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Publication number: 20160103174Abstract: A capacitive sensor that includes at least one capacitive element and a switched-capacitor readout circuit part for detecting at least one signal capacitance that results from motions of the capacitive element. The self-test bias voltage of the actuation circuit part is coupled to the capacitive element during a first period that is synchronized to the front end reset period and occurs when the self-test of the capacitive sensor is enabled by the self-test controller.Type: ApplicationFiled: October 7, 2015Publication date: April 14, 2016Inventors: Lasse AALTONEN, Jouni ERKKILÄ
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Patent number: 7330750Abstract: The invention relates to a method and apparatus for predicting a sudden heart abnormality for an individual patient. In order to provide a prediction mechanism that is suitable for acute care, three sub-indices are determined based on medical data obtained from the patient. The first sub-index indicates the level of deterministic chaos in the heart rate variability of the patient, the second sub-index indicates the energy level in the myocardium of the patient, and the third sub-index indicates the degree of ventricular arrhythmia of the patient. Based on the first, second, and third sub-indices, at least one overall risk index is then determined, the overall risk index indicating the risk level of a sudden heart abnormality for the patient.Type: GrantFiled: April 25, 2003Date of Patent: February 12, 2008Assignee: Instrumentarium Corp.Inventors: Jouni Erkkilä, Mikko Kaski, Panu Takala
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Patent number: 7092751Abstract: The invention relates to a method and system for detecting atrial arrhythmia, especially atrial fibrillations. Based on at least one electrical signal indicative of a heart's activity, a plurality of short-term HRV data sets are generated, one short-term HRV data set indicating the heart's rate variability within a time period of a given length, and two consecutive short-term HRV data sets having a given time difference. A frequency analysis of each short-term HRV data set is then performed and a power level corresponding to at least one selected frequency component in each short-term HRV data set is defined. The occurrence of the heart's atrial arrhythmia episodes are then estimated on the basis of the power levels defined.Type: GrantFiled: September 23, 2003Date of Patent: August 15, 2006Assignee: Instrumentarium Corp.Inventor: Jouni Erkkilä
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Publication number: 20050065444Abstract: The invention relates to a method and system for detecting atrial arrhythmia, especially atrial fibrillations. Based on at least one electrical signal indicative of a heart's activity, a plurality of short-term HRV data sets are generated, one short-term HRV data set indicating the heart's rate variability within a time period of a given length, and two consecutive short-term HRV data sets having a given time difference. A frequency analysis of each short-term HRV data set is then performed and a power level corresponding to at least one selected frequency component in each short-term HRV data set is defined. The occurrence of the heart's atrial arrhythmia episodes are then estimated on the basis of the power levels defined.Type: ApplicationFiled: September 23, 2003Publication date: March 24, 2005Inventor: Jouni Erkkila
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Publication number: 20040215090Abstract: The invention relates to a method and apparatus for predicting a sudden heart abnormality for an individual patient. In order to provide a prediction mechanism that is suitable for acute care, three sub-indices are determined based on medical data obtained from the patient. The first sub-index indicates the level of deterministic chaos in the heart rate variability of the patient, the second sub-index indicates the energy level in the myocardium of the patient, and the third sub-index indicates the degree of ventricular arrhythmia of the patient. Based on the first, second, and third sub-indices, at least one overall risk index is then determined, the overall risk index indicating the risk level of a sudden heart abnormality for the patient.Type: ApplicationFiled: April 25, 2003Publication date: October 28, 2004Inventors: Jouni Erkkila, Mikko Kaski, Panu Takala