Patents by Inventor Jean-Michel Daga
Jean-Michel Daga 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: 11604058Abstract: In one aspect, an angle sensor includes a first linear sensor and a second linear sensor. A first magnetic-field direction of a target magnet measured by the first linear sensor is substantially equal to a second magnetic-field direction of the target magnet measured by the second linear sensor. The first linear sensor, the second linear sensor and the target magnet are on an axis. The angle sensor determines an angle of a magnetic field.Type: GrantFiled: February 25, 2020Date of Patent: March 14, 2023Assignee: Allegro MicroSystems, LLCInventors: Rémy Lassalle-Balier, Jean-Michel Daga
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Patent number: 11525875Abstract: In one aspect, a magnetic field sensor includes a plurality of tunneling magnetoresistance (TMR) elements that includes a first TMR element, a second TMR element, a third TMR element and a fourth TMR element. The first and second TMR elements are connected to a voltage source and the third and fourth TMR elements are connected to ground. Each TMR element has a pillar count of more than one pillar and the pillar count is selected to reduce the angle error below 1.0°.Type: GrantFiled: October 15, 2021Date of Patent: December 13, 2022Assignee: Allegro MicroSystems, LLCInventors: Rémy Lassalle-Balier, Pierre Belliot, Christophe Hoareau, Jean-Michel Daga
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Patent number: 11467233Abstract: In one aspect, a bridge includes a first magnetoresistance element having a first reference angle, a second magnetoresistance element in series with the first magnetoresistance element and having a second reference angle, a third magnetoresistance element in parallel with the first magnetoresistance element and having the first reference angle and a fourth magnetoresistance element in series with the third magnetoresistance element and having the second reference angle. An output of the bridge has a linear response over a range of horizontal magnetic field intensity values not centered about a zero value and a reference angle indicates an angle the magnetoresistance element is most sensitive to changes in a magnetic field.Type: GrantFiled: March 18, 2020Date of Patent: October 11, 2022Assignee: Allegro MicroSystems, LLCInventors: Rémy Lassalle-Balier, Jean-Michel Daga, Damien Dehu
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Patent number: 11327127Abstract: A magnetic field sensor responsive to a movement of a target object can include a plurality of magnetoresistance elements arranged in a line and having a span according to y(1?1/x), where y is equal a full spatial period of the target object and where x is equal to a total quantity of magnetoresistance elements in the plurality of magnetoresistance elements. The plurality of magnetic field sensing elements is operable to generate a signal that is substantially not responsive to the movement of the target object but is responsive to stray external magnetic fields.Type: GrantFiled: July 10, 2019Date of Patent: May 10, 2022Assignee: Allegro MicroSystems, LLCInventors: Rémy Lassalle-Balier, Maxime Rioult, Jean-Michel Daga
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Publication number: 20220043082Abstract: In one aspect, a magnetic field sensor includes a plurality of tunneling magnetoresistance (TMR) elements that includes a first TMR element, a second TMR element, a third TMR element and a fourth TMR element. The first and second TMR elements are connected to a voltage source and the third and fourth TMR elements are connected to ground. Each TMR element has a pillar count of more than one pillar and the pillar count is selected to reduce the angle error below 1.0°.Type: ApplicationFiled: October 15, 2021Publication date: February 10, 2022Applicant: Allegro MicroSystems, LLCInventors: Rémy Lassalle-Balier, Pierre Belliot, Christophe Hoareau, Jean-Michel Daga
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Patent number: 11175359Abstract: In one aspect, a magnetic field sensor includes a plurality of tunneling magnetoresistance (TMR) elements that includes a first TMR element, a second TMR element, a third TMR element and a fourth TMR element. The first and second TMR elements are connected to a voltage source and the third and fourth TMR elements are connected to ground. Each TMR element has a pillar count of more than one pillar and the pillar count is selected to reduce the angle error below 1.0°.Type: GrantFiled: August 28, 2019Date of Patent: November 16, 2021Assignee: ALLEGRO MICROSYSTEMS, LLCInventors: Rémy Lassalle-Balier, Pierre Belliot, Christophe Hoareau, Jean-Michel Daga
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Publication number: 20210293910Abstract: In one aspect, a bridge includes a first magnetoresistance element having a first reference angle, a second magnetoresistance element in series with the first magnetoresistance element and having a second reference angle, a third magnetoresistance element in parallel with the first magnetoresistance element and having the first reference angle and a fourth magnetoresistance element in series with the third magnetoresistance element and having the second reference angle. An output of the bridge has a linear response over a range of horizontal magnetic field values not centered about a zero value and a reference angle indicates an angle the magnetoresistance element is most sensitive to changes in a magnetic field.Type: ApplicationFiled: March 18, 2020Publication date: September 23, 2021Applicant: Allegro MicroSystems, LLCInventors: Rémy Lassalle-Balier, Jean-Michel Daga, Damien Dehu
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Publication number: 20210262777Abstract: In one aspect, an angle sensor includes a first linear sensor and a second linear sensor. A first magnetic-field direction of a target magnet measured by the first linear sensor is substantially equal to a second magnetic-field direction of the target magnet measured by the second linear sensor. The first linear sensor, the second linear sensor and the target magnet are on an axis. The angle sensor determines an angle of a magnetic field.Type: ApplicationFiled: February 25, 2020Publication date: August 26, 2021Applicant: Allegro MicroSystems, LLCInventors: Rémy Lassalle-Balier, Jean-Michel Daga
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Publication number: 20210063501Abstract: In one aspect, a magnetic field sensor includes a plurality of tunneling magnetoresistance (TMR) elements that includes a first TMR element, a second TMR element, a third TMR element and a fourth TMR element. The first and second TMR elements are connected to a voltage source and the third and fourth TMR elements are connected to ground. Each TMR element has a pillar count of more than one pillar and the pillar count is selected to reduce the angle error below 1.0°.Type: ApplicationFiled: August 28, 2019Publication date: March 4, 2021Applicant: ALLEGRO MICROSYSTEMS, LLCInventors: Rémy Lassalle-Balier, Pierre Belliot, Christophe Hoareau, Jean-Michel Daga
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Publication number: 20210011096Abstract: A magnetic field sensor responsive to a movement of a target object can include a plurality of magnetoresistance elements arranged in a line and having a span according to y(1?1/x), where y is equal a full spatial period of the target object and where x is equal to a total quantity of magnetoresistance elements in the plurality of magnetoresistance elements. The plurality of magnetic field sensing elements is operable to generate a signal that is substantially not responsive to the movement of the target object but is responsive to stray external magnetic fields.Type: ApplicationFiled: July 10, 2019Publication date: January 14, 2021Applicant: Allegro MicroSystems, LLCInventors: Rémy Lassalle-Balier, Maxime Rioult, Jean-Michel Daga
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Patent number: 10725066Abstract: The present invention relates to an interface circuit for a capacitive accelerometer sensor for measuring an acceleration value sensed by the sensor. The interface circuit comprises a plurality of electrical switches and three programmable capacitors. Two of the programmable capacitors are arranged to implement gain trimming of the interface circuit, while one of the programmable capacitors is arranged to implement acceleration range selection.Type: GrantFiled: June 6, 2018Date of Patent: July 28, 2020Assignee: EM Microeletronic-Marin SAInventors: Yonghong Tao, Sylvain Grosjean, Jean-Michel Daga
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Patent number: 10564176Abstract: A capacitive accelerometer for measuring an acceleration value is provided, including a first and a second electrode; a third mobile electrode arranged therebetween, and forming with the first electrode a first capacitor, and with the second electrode a second capacitor, the third electrode being displaced when the accelerometer is subject to acceleration and generates a capacitance difference value transformable to electrical charges; a first and a second voltage source configured to selectively apply first and second voltages to the first and the second electrodes, respectively, and a third voltage to the third electrode, and to generate electrostatic forces acting on the third electrode, the first, second and/or third voltages applied during electrical charge transfers for collecting the electrical charges to measure the acceleration; and an electrostatic force compensator to compensate for missing electrostatic forces due to a modified charge transfer rate, a compensation amount dependent on the modifiedType: GrantFiled: November 7, 2017Date of Patent: February 18, 2020Assignee: EM Microelectronic-Marin SAInventors: Sylvain Grosjean, Yonghong Tao, Jean-Michel Daga
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Publication number: 20180364275Abstract: The present invention relates to an interface circuit for a capacitive accelerometer sensor for measuring an acceleration value sensed by the sensor. The interface circuit comprises a plurality of electrical switches and three programmable capacitors. Two of the programmable capacitors are arranged to implement gain trimming of the interface circuit, while one of the programmable capacitors is arranged to implement acceleration range selection.Type: ApplicationFiled: June 6, 2018Publication date: December 20, 2018Applicant: EM Microelectronic-Marin SAInventors: Yonghong Tao, Sylvain Grosjean, Jean-Michel Daga
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Publication number: 20180143219Abstract: The present invention concerns a capacitive accelerometer for measuring an acceleration value. The accelerometer comprises: a first electrode; a second electrode; a third, mobile electrode arranged between the first and second electrodes, and forming with the first electrode a first capacitor with a first capacitance value, and with the second electrode a second capacitor with a second capacitance value, the third electrode being arranged to be displaced when the capacitive accelerometer is subject to acceleration thereby arranged to generate a capacitance difference value between the first and second capacitances transformable to electrical charges; a first voltage source and a second voltage source for selectively applying a first voltage value to the first electrode, a second voltage value to the second electrode and a third voltage value to the third electrode, and arranged to generate electrostatic forces acting on the third electrode.Type: ApplicationFiled: November 7, 2017Publication date: May 24, 2018Applicant: EM Microelectronic-Marin SAInventors: Sylvain GROSJEAN, Yonghong TAO, Jean-Michel DAGA
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Patent number: 9767034Abstract: The present invention concerns a method of operating a first-in first-out memory (9) arranged to store measurement data samples measured by a plurality of data measurement sensors (1, 3, 5), which can operate at various sampling rates. The oldest measurement data sample in the memory (9) is arranged to be read first before the newer measurement data samples. The method comprises: receiving measurement data samples from at least two data measurement sensors (1, 3, 5); and saving the received measurement data samples in the memory (9). Each of the measurement data samples saved in the memory is associated with a tag which is also saved in the memory (9) and which identifies the data measurement sensor (1, 3, 5) which measured the respective measurement data sample.Type: GrantFiled: May 11, 2015Date of Patent: September 19, 2017Assignee: EM MICROELECTRONIC-MARIN SAInventors: Jean-Michel Daga, Alexandre Deschildre
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Patent number: 9759581Abstract: The electronic measurement circuit comprises a measurement sensor with two differential mounted capacitors each comprising a fixed electrode, and a common electrode arranged to move relative to the fixed capacitor electrode to alter the capacitive value when the physical parameter is measured.Type: GrantFiled: January 14, 2016Date of Patent: September 12, 2017Assignee: EM MIRCOELECTRONIC MARIN S.A.Inventors: Christophe Entringer, Luca Rossi, Sylvain Grosjean, Jean-Michel Daga
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Publication number: 20160245672Abstract: The electronic measurement circuit comprises a measurement sensor with two differential mounted capacitors each comprising a fixed electrode, and a common electrode arranged to move relative to the fixed capacitor electrode to alter the capacitive value when the physical parameter is measured.Type: ApplicationFiled: January 14, 2016Publication date: August 25, 2016Applicant: EM MICROELECTRONIC MARIN S.A.Inventors: Christophe ENTRINGER, Luca ROSSI, Sylvain GROSJEAN, Jean-Michel DAGA
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Publication number: 20150331805Abstract: The present invention concerns a method of operating a first-in first-out memory (9) arranged to store measurement data samples measured by a plurality of data measurement sensors (1, 3, 5), which can operate at various sampling rates. The oldest measurement data sample in the memory (9) is arranged to be read first before the newer measurement data samples. The method comprises: receiving measurement data samples from at least two data measurement sensors (1, 3, 5); and saving the received measurement data samples in the memory (9). Each of the measurement data samples saved in the memory is associated with a tag which is also saved in the memory (9) and which identifies the data measurement sensor (1, 3, 5) which measured the respective measurement data sample.Type: ApplicationFiled: May 11, 2015Publication date: November 19, 2015Applicant: EM MICROELECTRONIC-MARIN SAInventors: Jean-Michel DAGA, Alexandre DESCHILDRE
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Patent number: 8964479Abstract: Techniques for sensing a semiconductor memory device are disclosed. In one embodiment, the techniques may be realized as a semiconductor memory device comprising a plurality of memory cells arranged in an array of rows and columns and data sense amplifier circuitry coupled to at least one of the plurality of memory cells. The data sense amplifier circuitry may comprise first amplifier circuitry and resistive circuitry, wherein the first amplifier circuitry and the resistive circuitry may form a feedback loop.Type: GrantFiled: November 4, 2013Date of Patent: February 24, 2015Assignee: Micron Technology, Inc.Inventor: Jean-Michel Daga
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Publication number: 20140055201Abstract: Techniques for sensing a semiconductor memory device are disclosed. In one embodiment, the techniques may be realized as a semiconductor memory device comprising a plurality of memory cells arranged in an array of rows and columns and data sense amplifier circuitry coupled to at least one of the plurality of memory cells. The data sense amplifier circuitry may comprise first amplifier circuitry and resistive circuitry, wherein the first amplifier circuitry and the resistive circuitry may form a feedback loop.Type: ApplicationFiled: November 4, 2013Publication date: February 27, 2014Applicant: Micron Technology, Inc.Inventor: Jean-Michel DAGA