Patents by Inventor Serge Reymond
Serge Reymond 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: 11630167Abstract: A position sensing system has a trim unit to trim hall voltages generated by a first sensor and a second sensor in response to an excitation current, to compensate a non-orthogonality of the first sensor and the second sensor.Type: GrantFiled: January 19, 2022Date of Patent: April 18, 2023Assignee: Chengdu Monolithic Power Systems Co., Ltd.Inventors: Tianzhu Zhang, Serge Reymond, Pavel Kejik
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Publication number: 20220236345Abstract: A position sensing system has a trim unit to trim hall voltages generated by a first sensor and a second sensor in response to an excitation current, to compensate a non-orthogonality of the first sensor and the second sensor.Type: ApplicationFiled: January 19, 2022Publication date: July 28, 2022Inventors: Tianzhu Zhang, Serge Reymond, Pavel Kejik
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Patent number: 10451657Abstract: A current sensing system uses a Hall effect device. A conductor carrying a target current is shaped in a way such that two regions with opposite magnetic field directions crossed there through are created at a silicon die which contains the Hall effect devices placed in a mirror way. The Hall effect devices react the magnetic field to generate a Hall voltage when a bias current is applied, which is then processed by a process circuit and an operational unit, so that a differential signal indicative of the target current is generated.Type: GrantFiled: August 14, 2017Date of Patent: October 22, 2019Assignee: Monolithic Power Systems, Inc.Inventors: Serge Reymond, Pavel Kejik
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Publication number: 20180246147Abstract: A current sensing system uses a Hall effect device. A conductor carrying a target current is shaped in a way such that two regions with opposite magnetic field directions crossed there through are created at a silicon die which contains the Hall effect devices placed in a mirror way. The Hall effect devices react the magnetic field to generate a Hall voltage when a bias current is applied, which is then processed by a process circuit and an operational unit, so that a differential signal indicative of the target current is generated.Type: ApplicationFiled: August 14, 2017Publication date: August 30, 2018Inventors: Serge Reymond, Pavel Kejik
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Patent number: 9945691Abstract: A magnetic angular sensing system has a magnet magnetized radially and a magnetic angular sensor for sensing the angular position of the magnet. The magnetic angular sensor is mounted in parallel to the axis of the magnet and is non-coplanar with the magnet. The magnetic angular sensor senses an angular position of the magnet based on a detected axial magnetic field component and a tangential magnetic field component of the magnetic field vector where the sensor mounted. This invention provides a flexible sensing system.Type: GrantFiled: September 15, 2016Date of Patent: April 17, 2018Assignee: Monolithic Power Systems, Inc.Inventor: Serge Reymond
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Patent number: 9880025Abstract: A sensor for sensing an angular orientation of a magnet producing a magnetic field includes a sensing unit having N?2 magnetic field sensing devices MFSD; a scanning circuit for repeatedly sequentially probing at least two of the MFSDs and concatenating signals outputted by the respective MFSDs for obtaining a magnetic signal; a magnet-signal output for outputting the magnetic signal; and a reference output for outputting a reference signal independent of the magnetic field. The sensor includes a first signal processing unit SPU1 and a second signal processing unit which are identically constructed, each having an input and an output; a phase detection unit PDU having a first input PDU1 and a second input PDU2, for deriving phase differences between inputted signals, and for outputting a signal related to the angular orientation.Type: GrantFiled: July 10, 2014Date of Patent: January 30, 2018Assignee: MPS TECH SWITZERLAND SARLInventors: Pavel Kejik, Serge Reymond
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Publication number: 20170074680Abstract: A magnetic angular sensing system has a magnet magnetized radially and a magnetic angular sensor for sensing the angular position of the magnet. The magnetic angular sensor is mounted in parallel to the axis of the magnet and is non-coplanar with the magnet. The magnetic angular sensor senses an angular position of the magnet based on a detected axial magnetic field component and a tangential magnetic field component of the magnetic field vector where the sensor mounted. This invention provides a flexible sensing system.Type: ApplicationFiled: September 15, 2016Publication date: March 16, 2017Inventor: Serge Reymond
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Patent number: 9453892Abstract: Integrated circuit Hall sensor system comprising a plurality of elementary blocks (EB), each elementary block including a Hall cell (4), a differential pair (8) of an input stage of a Differential Difference Amplifier (DDA), and terminals (12a, 12b), wherein the terminals (12a, 12b) are placed laterally on opposing outer sides of each elementary block parallel to a Y axis and the plurality of elementary blocks are arranged in a juxtaposed manner to form at least one row (6a, 6b) extending along an X axis orthogonal to the Y axis and interconnected by the terminals.Type: GrantFiled: July 1, 2011Date of Patent: September 27, 2016Assignee: LEM Intellectual Property SAInventors: Pavel Kejik, Serge Reymond
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Publication number: 20160169706Abstract: A sensor for sensing an angular orientation of a magnet producing a magnetic field includes a sensing unit having N?2 magnetic field sensing devices MFSD; a scanning circuit for repeatedly sequentially probing at least two of the MFSDs and concatenating signals outputted by the respective MFSDs for obtaining a magnetic signal; a magnet-signal output for outputting the magnetic signal; and a reference output for outputting a reference signal independent of the magnetic field. The sensor includes a first signal processing unit SPU1 and a second signal processing unit which are identically constructed, each having an input and an output; a phase detection unit PDU having a first input PDU1 and a second input PDU2, for deriving phase differences between inputted signals, and for outputting a signal related to the angular orientation.Type: ApplicationFiled: July 10, 2014Publication date: June 16, 2016Inventors: Pavel KEJIK, Serge REYMOND
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Patent number: 8963540Abstract: A sensor for sensing an angular orientation of a magnetic field of a magnet includes: N?2 Hall effect devices (HD1, HD2, . . . ), each having a detection direction and including a first and a second pair of connectors, wherein, in presence of the magnetic field, a flow of an electric current between the connectors of the first pair allows to pick up a Hall voltage between the connectors of the second pair induced by the magnetic field, unless a magnetic field component of the magnetic field along the detection direction is zero, wherein the N Hall effect devices are aligned such that they have a common detection direction lying along an axis; a filtering-or-resonating unit (F) comprising an input and an output, wherein a signal outputted from the output is referred to as filtered signal.Type: GrantFiled: September 7, 2012Date of Patent: February 24, 2015Assignee: Sensima Technology SAInventors: Serge Reymond, Pavel Kejik
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Publication number: 20140070796Abstract: A sensor for sensing an angular orientation of a magnetic field of a magnet includes: N?2 Hall effect devices (HD1, HD2, . . . ), each having a detection direction and including a first and a second pair of connectors, wherein, in presence of the magnetic field, a flow of an electric current between the connectors of the first pair allows to pick up a Hall voltage between the connectors of the second pair induced by the magnetic field, unless a magnetic field component of the magnetic field along the detection direction is zero, wherein the N Hall effect devices are aligned such that they have a common detection direction lying along an axis; a filtering-or-resonating unit (F) comprising an input and an output, wherein a signal outputted from the output is referred to as filtered signal.Type: ApplicationFiled: September 7, 2012Publication date: March 13, 2014Inventors: Serge Reymond, Pavel Kejik
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Patent number: 8508218Abstract: A method for sensing an angular orientation of a magnetic field includes providing a set of N?2 Hall effect devices, each having a detection direction and including two pairs of connectors; providing at least one band pass filter having a fundamental frequency f=1/Tf; providing at least one current source for outputting an electrical current at its output; applying, during a first time period of a duration 0.5 Tf and in a specific sequence of the N Hall effect devices, to each of the N Hall effect devices a respective wiring scheme Wi+, during respective subsequent time periods of durations ti; and applying, during a second time period of a duration 0.5 Tf, subsequent to the first time period of a duration 0.5 Tf, and in the same specific sequence of the N Hall effect devices, to each of the N Hall effect devices a respective wiring scheme Wi?, during respective subsequent time periods of the same durations ti.Type: GrantFiled: May 11, 2011Date of Patent: August 13, 2013Assignee: Sensima Technology SAInventors: Serge Reymond, Pavel Kejik
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Publication number: 20130099782Abstract: Integrated circuit Hall sensor system comprising a plurality of elementary blocks (EB), each elementary block including a Hall cell (4), a differential pair (8) of an input stage of a Differential Difference Amplifier (DDA), and terminals (12a, 12b), wherein the terminals (12a, 12b) are placed laterally on opposing outer sides of each elementary block parallel to a Y axis and the plurality of elementary blocks are arranged in a juxtaposed manner to form at least one row (6a, 6b) extending along an X axis orthogonal to the Y axis and interconnected by the terminals.Type: ApplicationFiled: July 1, 2011Publication date: April 25, 2013Applicant: LEM INTELLECTUAL PROPERTY SAInventors: Pavel Kejik, Serge Reymond
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Patent number: 8358125Abstract: In a method for determining geometrical characteristics (d) of an anomaly (12) which changes the electrical conductivity in the region near the surface of an electrically conducting, in particular a metallic test object (10), a considerable simplification is achieved in that, in the region of the anomaly (12) in the test object (10), eddy currents (13, 14) of different frequencies are excited, and the magnetic field (By,0), which is produced by the excited eddy currents, is scanned in the vicinity of the anomaly (12) and the geometric characteristics of the anomaly are exclusively deduced from the distribution of the magnetic field (By,0).Type: GrantFiled: October 29, 2008Date of Patent: January 22, 2013Assignee: ALSTOM Technology Ltd.Inventors: Roland Richard Moser, Bernard Revaz, Serge Reymond, Pavel Kejik, Radivoje Popovic
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Patent number: 8324891Abstract: A magnetic field sensor includes a sensing structure having a ring-shaped well, a plurality of contacts of equal size disposed along the ring-shaped well, a circuit having a plurality of electronic switches associated with the contacts of the sensing structure, a logic block for controlling the electronic switches, at least one current source, a voltage measuring device, a timing circuit providing a control signal for controlling the logic and providing a reference signal, wherein the logic block is configured to switch the switches under the control of the control signal so that a predetermined number of contacts of the plurality of contacts form a vertical Hall element supplied with current from the at least one current source and having two contacts connected to the voltage measuring device and circuitry configured to measure a phase shift between the reference signal and an output signal of the voltage measuring device.Type: GrantFiled: May 28, 2008Date of Patent: December 4, 2012Assignee: Ecole Polytechnique Federale de Lausanne (EPFL)Inventors: Pavel Kejik, Radivoje Popovic, Serge Reymond
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Publication number: 20120286773Abstract: The method for sensing an angular orientation of a magnetic field includes a) providing a set of N?2 Hall effect devices, each having a detection direction and comprising two pairs of connectors; b) providing at least one band pass filter having a fundamental frequency f=1/Tf; c) providing at least one current source for outputting an electrical current at its output; d1) applying, during a first time period of a duration 0.5 Tf and in a specific sequence of said N Hall effect devices, to each of said N Hall effect devices a respective wiring scheme Wi+, during respective subsequent time periods of durations ti; and d2) applying, during a second time period of a duration 0.5 Tf, subsequent to said first time period of a duration 0.5 Tf, and in the same specific sequence of said N Hall effect devices, to each of said N Hall effect devices a respective wiring scheme Wi?, during respective subsequent time periods of the same durations ti.Type: ApplicationFiled: May 11, 2011Publication date: November 15, 2012Applicant: SENSIMA TECHNOLOGY SAInventors: Serge Reymond, Pavel Kejik
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Publication number: 20110251327Abstract: An antistatic white paint suitable for application on spacecraft notably, based on a binder of the acrylic polymer type.Type: ApplicationFiled: April 8, 2011Publication date: October 13, 2011Inventors: Stephanie Remaury, Pascale Nabarra, Olivier Guillaumon, Serge Reymond
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Publication number: 20110251328Abstract: An antistatic white paint suitable for application on spacecraft notably, based on a binder of the silicon polymer type.Type: ApplicationFiled: April 8, 2011Publication date: October 13, 2011Inventors: Stephanie Remaury, Pascale Nabarra, Olivier Guillaumon, Serge Reymond
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Publication number: 20100164491Abstract: A magnetic field sensor for measuring a direction of a magnetic field in a plane comprises a sensing structure comprising a ring-shaped well, a plurality of contacts of equal size placed at equal distance from each other along the ring-shaped well, and an electronic circuit comprising a plurality of electronic switches associated with the contacts of the sensing structure, a logic block for controlling the electronic switches, at least one current source, a means for measuring a difference between a first voltage and a second voltage, a timing circuit providing a control signal for controlling the logic block and providing a reference signal, wherein the logic block is adapted to close and open the electronic switches under the control of the control signal according to a predetermined scheme such that a predetermined number of contacts of the plurality of contacts form a vertical Hall element that is supplied with current from the at least one current source and that has two contacts connected to the means fType: ApplicationFiled: May 28, 2008Publication date: July 1, 2010Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)Inventors: Pavel Kejik, Radivoje Popovic, Serge Reymond
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Publication number: 20090108838Abstract: In a method for determining geometrical characteristics (d) of an anomaly (12) which changes the electrical conductivity in the region near the surface of an electrically conducting, in particular a metallic test object (10), a considerable simplification is achieved in that, in the region of the anomaly (12) in the test object (10), eddy currents (13, 14) of different frequencies are excited, and the magnetic field (By,0), which is produced by the excited eddy currents, is scanned in the vicinity of the anomaly (12) and the geometric characteristics of the anomaly are exclusively deduced from the distribution of the magnetic field (By,0).Type: ApplicationFiled: October 29, 2008Publication date: April 30, 2009Inventors: Roland Richard Moser, Bernard Revaz, Serge Reymond, Pavel Kejik, Radivoje Popovic