Hall Plate Magnetometers Patents (Class 324/251)
  • Patent number: 11169183
    Abstract: A current sensor includes a bus bar, a magnetic core, and a casing. The bus bar includes a plate-shaped portion. The magnetic core surrounds the plate-shaped portion. The casing houses the bus bar and magnetic core. A thickness direction of the magnetic core is along a longitudinal direction of the plate-shaped portion. The casing includes lower and upper casings. The lower casing includes first and second press-fit portions. The first press-fit portion includes a groove portion into which the plate-shaped portion is press-fitted. In a state where the magnetic core is inserted downward into the second press-fit portion, both-side portions of the magnetic core in a width direction are press-fitted and held by the second press-fit portion. The upper casing includes a pressing portion that presses the bus bar and magnetic core downward. The groove portion is recessed downward, and is along a thickness direction of the magnetic core.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: November 9, 2021
    Assignee: AISIN CORPORATION
    Inventors: Daisuke Nakagawa, Koki Sugihara, Toshiro Nagashima
  • Patent number: 11163020
    Abstract: A sensor circuit comprises a sensor adapted to sense a physical quantity and to produce a sensor output signal. A sensor-offset correction block is arranged to receive a signal indicative of a supply voltage applied to the sensor circuit and to generate a compensation signal based on the signal indicative of the supply voltage and on a quantity indicative of a state of the sensor circuit. A combiner is adapted to combine the sensor output signal with the compensation signal, thereby obtaining a compensated signal.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: November 2, 2021
    Assignee: MELEXIS BULGARIA LTD
    Inventors: Rumen Marinov Peev, Stoyan Georgiev Gaydov
  • Patent number: 11150108
    Abstract: A magnetic angle sensor includes a semiconductor chip that includes: a pair of vertical Hall sensor elements configured to generate vertical Hall sensor signals in response to a magnetic field impinging thereon; a first pair of lateral Hall sensor elements configured to generate first lateral Hall sensor signals in response to the magnetic field impinging thereon; a second pair of lateral Hall sensor elements configured to generate second lateral Hall sensor signals in response to the magnetic field impinging thereon; and a sensor circuit configured to: determine a first angle value corresponding to an orientation of the magnetic field based on the vertical Hall sensor signals, determine a second angle value corresponding to the orientation of the magnetic field based on the first and the second lateral Hall sensor signals, and determine whether the first and the second angle values are within an acceptable tolerance range of each other.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: October 19, 2021
    Inventors: Stephan Leisenheimer, Richard Heinz
  • Patent number: 11137310
    Abstract: GaN/Al0.20Ga0.80N/GaN heterostructures Micro-Hall effect sensors providing simultaneous current and temperature detection over at least a best performance temperature range of ?183° C. and 252° C.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: October 5, 2021
    Inventors: Thomas P. White, Satish Shetty, Morgan E. Ware, H. Alan Mantooth, Gregory J. Salamo
  • Patent number: 11131726
    Abstract: An apparatus for magnetic field detection includes a power supply and a plurality of magnetic field sensitive devices including at least first, second, and third magnetic field sensitive devices. The first to third magnetic field sensitive devices are coupled to each other and to the power supply such that a first supply current path runs through the first magnetic field sensitive device and not through the second magnetic field sensitive device, a second supply current path runs through the second magnetic field sensitive device and not through the first magnetic field sensitive device, and the first and second current paths run through the third magnetic field sensitive device. An internal resistance of the third magnetic field sensitive device is smaller than both an internal resistance of the first magnetic field sensitive device and an internal resistance of the second magnetic field sensitive device.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: September 28, 2021
    Inventor: Udo Ausserlechner
  • Patent number: 11125838
    Abstract: A semiconductor sensor structure is provided which has a top side and a bottom side and includes a first semiconductor wafer, a second semiconductor wafer, and an insulating layer. The second semiconductor wafer includes a substrate layer having an integrated circuit, formed on the front side, with at least one metal terminal contact formed on the front side. The front side of the second semiconductor wafer and a front side of the first semiconductor wafer are each formed on the insulating layer. The first semiconductor wafer has a semiconductor layer with a three-dimensional Hall sensor structure having a sensor area formed of a monolithic semiconductor body and extending from the backside to the front side of the semiconductor layer. At least three mutually spaced apart first metal terminal contacts are on the front side and at least three mutually spaced apart second metal terminal contacts are on the backside.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: September 21, 2021
    Assignee: TDK-Micronas GmbH
    Inventors: Martin Cornils, Maria-Cristina Vecchi
  • Patent number: 11112321
    Abstract: A torque detection device includes a first magnetic circuit part, a second magnetic circuit part, a circuit board module, and a sensor housing. The first magnetic circuit part is disposed on one side of a multipolar magnet in an axial direction. The second magnetic circuit part is disposed on the other side of the multipolar magnet in the axial direction. The circuit board module includes plural magnetic sensors mounted thereon and facing the magnetic circuit on one end side in a width direction being included in the plane and intersecting the arrangement direction. The sensor housing is coupled to one end side in the arrangement direction of the circuit board module so as to support the circuit board module on the one end side in the arrangement direction of the circuit board module.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: September 7, 2021
    Assignees: DENSO CORPORATION, SOKEN, INC.
    Inventors: Ken Tanaka, Shigetoshi Fukaya, Toshiro Suzuki, Satoru Jinno
  • Patent number: 11092629
    Abstract: A computer system analyzes data from smart meters. The computer system can, for example, analyze the data from a smart meter to determine if the smart meter is connected to a different distribution transformer, if the smart meter is at a customer site where power theft is occurring, if the smart meter is located at a customer site having a solar photovoltaic system, if the smart meter is located at a customer site having an electric vehicle, or if the smart meter is located at a grow house.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: August 17, 2021
    Assignee: Sacramento Municipal Utility District
    Inventors: Remington Clark, Jeff Berkheimer, Sheikh Hassan
  • Patent number: 11073574
    Abstract: A Hall sensor apparatus has a Hall effect field with at least five contacts which are wired to at least five connections, wherein none of the at least five contacts is wired to more than one of the at least five connections, a supply circuit and a measurement circuit. In a first operational phase, a supply current enters the Hall effect field or leaves the Hall effect field through one single connection of the at least five connections, and two differential signals are measured at different common-mode potentials in each case between two of the at least five connections. The measurement circuit is designed to combine the measured differential signals into a total signal.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: July 27, 2021
    Assignee: Infineon Technologies AG
    Inventor: Udo Ausserlechner
  • Patent number: 11061083
    Abstract: Determining a distribution of carrier mobilities in a material of an electronic device includes acquiring a magnetic field-dependent Hall measurement of the material exposed to a finite number of magnetic fields, wherein the magnetic field-dependent Hall measurement includes an electrical signal generated in response to the finite number of magnetic fields being applied perpendicular to a current through the material; and processing the magnetic field-dependent Hall measurement, using a computer, to determine a continuous, least-biased distribution of carrier mobilities that match the magnetic field-dependent Hall measurement by determining, using the magnetic field-dependent Hall measurement, a probability density function of a conductance of the material; approximating the mobility spectrum to a maximum-entropy spectrum of the material; and determining an energy dependence of carrier scattering in the material based on the maximum-entropy spectrum.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: July 13, 2021
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: William A. Beck
  • Patent number: 11047933
    Abstract: Magnetic field sensors and associated techniques use a Hall effect element in a current spinning arrangement in combination with a rippled reduction feedback network configured to reduce undesirable spectral components generated by the current spinning and other circuit elements.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: June 29, 2021
    Assignee: Allegro MicroSystems, LLC
    Inventors: Hernán D. Romero, Roman Prochazka, Martin Drinovsky
  • Patent number: 11035697
    Abstract: A sensor system that simultaneously detects the positions of multiple movable carriages along a motion path. The sensor system includes a plurality of sensors arranged at least along a subsection of the motion path, wherein each sensor is designed for a contactless detection of a measuring element provided on each movable carriage. The sensor system also includes a processing device, which is connected electrically with the sensors and which is designed for a synchronous detection of sensor signals of the sensors.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: June 15, 2021
    Assignee: FESTO SE & CO. KG
    Inventors: Ralf Hartramph, Fabian Albert, Andreas Veit
  • Patent number: 11016151
    Abstract: The semiconductor device includes a first vertical Hall element provided in a first region of a semiconductor substrate, and including a first plurality of electrodes arranged at predetermined intervals on a first straight line, a second vertical Hall element provided in a second region of the semiconductor substrate different from the first region, and including a second plurality of electrodes of the same number as that of the first plurality of electrodes, the second plurality of electrodes being arranged at the predetermined intervals on a second straight line parallel to the first straight line, a first drive power source configured to drive the first vertical Hall element, and a second drive power source configured to drive the second vertical Hall element and provided separately from the first drive power source.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: May 25, 2021
    Assignee: ABLIC INC.
    Inventors: Takaaki Hioka, Tomoki Hikichi
  • Patent number: 10996287
    Abstract: A method for operating a Hall sensor device that includes a Hall effect region and a plurality of electrical contact regions configured to provide electrical signals to and from the Hall effect region using a plurality of control terminals is provided. Each electrical contact region is formed in a respective well that adjoins the Hall effect region, and each control terminal is configured to control a conductance in an associated well. The method includes selectively applying control signals to a first subset of the plurality of control terminals to form channels conducting majority carriers of a first conductivity type in the associated wells during a first operating phase; and selectively applying control signals to a different second subset of the plurality of control terminals to form channels conducting majority carriers of the first conductivity type in the associated wells during a second operating phase.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: May 4, 2021
    Inventor: Udo Ausserlechner
  • Patent number: 10996246
    Abstract: A current detection method for a current detection device including magnetism detection elements that detect magnetic flux density and output a voltage signal corresponding to the magnetic flux density is provided. The method includes acquiring measured value data that is obtained as a result of providing magnetic flux density in a detectable range of the magnetism detection elements that indicates the relationship between the magnetic flux density and an output voltage signal from the current detection device. Next, computational processing is performed so as to fit the acquired measured value data to a formula that includes plural factors and indicates the output voltage of the magnetism detection elements, thereby calculating the plural factors, and correcting the output voltage signal from the magnetism detection elements in accordance with the calculated factors so as to be approximately linear with respect to the magnetic flux density.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: May 4, 2021
    Assignee: HITACHI METALS, LTD.
    Inventors: Naoki Futakuchi, Naofumi Chiwata, Katsuya Akimoto
  • Patent number: 10969444
    Abstract: The present disclosure describes a semiconductor circuit arrangement comprising a Hall sensor circuit integrated into a semiconductor substrate and configured to conduct a Hall supply current between a first terminal and a second terminal of a Hall effect region at an angle of 45° with respect to a normal to a primary flat plane of the semiconductor substrate laterally through the Hall effect region, wherein the Hall supply current has a first dependence on a mechanical stress of the semiconductor substrate. A resistance arrangement integrated into the semiconductor substrate, the resistance arrangement being different than the Hall effect region, is configured to conduct a current between a first terminal and a second terminal of the resistance arrangement, wherein the current through the resistance arrangement has a second dependence on the mechanical stress of the semiconductor substrate.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: April 6, 2021
    Assignee: Infineon Technologies AG
    Inventor: Mario Motz
  • Patent number: 10935612
    Abstract: Systems and methods described herein provide a current sensor based on magnetic field detection having multiple sensor arrangements with multiple, different sensitivity ranges. The outputs of the multiple sensor arrangements can be combined to generate a single output signal. The current sensor can include two or more sensor arrangements, each having one or more magnetic field sensing elements, and configured to sense a magnetic field in different first measurement ranges corresponding to different ranges of currents through the conductor and further configured to generate different magnetic field signals indicative of the sensed magnetic field in the respective measurement range. The current sensor can include a circuit configured to generate an output signal indicative of a combination of the different magnetic field signals that corresponds to the current through the conductor.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: March 2, 2021
    Assignees: Allegro MicroSystems, LLC, Commissariat à l'énergie atomique et aux énergies alternatives
    Inventors: Noémie Belin, Shaun D. Milano, Wade Bussing, Claude Fermon
  • Patent number: 10921360
    Abstract: A RF field sensor in which a magnetostrictive film is deposited on one or more electrodes of one or more quartz resonator(s) in which an electric field of the RF field is detected along one axis of the RF field sensor and a magnetic field of the RF field is detected along an orthogonal axis of the RF field sensor simultaneously.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: February 16, 2021
    Assignees: HRL Laboratories, LLC, Rutgers University
    Inventors: Randall L. Kubena, Walter S. Wall, Yook-Kong Yong, Richard J. Joyce
  • Patent number: 10873280
    Abstract: Methods and apparatus for controlling a three-phase motor and providing sinusoidal phase currents during startup. In embodiments, differential outputs from a magnetic field sensing element are used to generate a polarity signal used to provide a motor direction drive signal. An amplitude signal derived from the magnetic field sensing element and a measured motor current are used to generate a current amplitude signal. A PWM module generates signals for driving the motor with sinusoidal phase currents from the current amplitude signal and the motor direction drive signal.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: December 22, 2020
    Assignee: Allegro MicroSystems, LLC
    Inventors: Yisong Lu, Lyndon Ambruson
  • Patent number: 10866289
    Abstract: A magnetic field sensor includes a first magnetic field sensing element configured to generate a first magnetic field signal indicative of a magnetic field associated with a target, a second magnetic field sensing element spaced from the first magnetic field sensing element and configured to generate a second magnetic field signal indicative of the magnetic field associated with the target. A switching module coupled to receive the first and second magnetic field signals is configured to generate a combined signal having alternating portions associated with the first and second magnetic field signals.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: December 15, 2020
    Assignee: Allegro MicroSystems, LLC
    Inventor: Aaron Cook
  • Patent number: 10845431
    Abstract: A Hall sensor has a Hall sensor element, having multiple connection locations and a current supply source or voltage supply source, which has a first and a second supply connector for output of a supply current or a supply voltage. The first supply connector is connected or can be connected with a first connection location to feed a current into the Hall sensor element, and the second supply connector is connected or can be connected with a second connection location of the Hall sensor element. The Hall sensor has a NAND gate, which is connected with the first connection location of the Hall sensor element using a first input, and with the second connection location of the Hall sensor element using a second input, and has an output for output of a first error signal.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: November 24, 2020
    Assignee: TDK-Micronas GmbH
    Inventors: Marc Baumann, David Muthers, Thomas Desel
  • Patent number: 10847710
    Abstract: The semiconductor device includes a vertical Hall element that is provided in a first region of a semiconductor substrate and has a plurality of first electrodes, and a resistive element that is provided in a second region different from the first region in the semiconductor substrate and has a plurality of second electrodes. The plurality of first electrodes and the plurality of second electrodes are connected so that resistances of current paths are substantially the same in any phase in which the vertical Hall element is driven using a spinning current method.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: November 24, 2020
    Assignee: ABLIC Inc.
    Inventors: Takaaki Hioka, Tomoki Hikichi
  • Patent number: 10823583
    Abstract: The present invention relates to a sensor device comprising four or more sensor elements. A controller comprising a control circuit controls the sensor elements to measure an environment attribute, produces more than two values corresponding to the measurement and compares the values to determine a fault. The more than two values are obtained by different combinations of sensor elements that have at least one sensor element in common and one sensor element that is not in common. The values can be measured in different coordinate systems and the control circuit can convert the field vectors into a common coordinate system.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: November 3, 2020
    Assignee: MELEXIS TECHNOLOGIES SA
    Inventors: Javier Bilbao de Mendizabal, Mathieu Poezart
  • Patent number: 10816613
    Abstract: A magnetic sensor circuit includes a first type electromagnetic conversion element which supplies antiphase signals corresponding to the intensity of a magnetic field in a first direction, a second type electromagnetic conversion element which supplies antiphase signals corresponding to the intensity of a magnetic field in a second direction, a switch circuit which controls a current supplied from a current source to the first and the second type electromagnetic conversion elements, and a common mode feedback circuit which determines a midpoint voltage between the first and the second type electromagnetic conversion elements. The common mode feedback circuit performs a feedback operation to thereby set an output common voltage of the first type electromagnetic conversion element higher than the preset reference voltage and set an output common voltage of the second type electromagnetic conversion element lower than the preset reference voltage.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: October 27, 2020
    Assignee: ABLIC Inc.
    Inventor: Masao Iriguchi
  • Patent number: 10794966
    Abstract: A device includes a memory that stores a measurement-result of a first magnetization of a permanent-magnet corresponding to an external-magnetic field in an open-magnetic circuit; and a processor to divide the permanent-magnet into meshes, generate a function based on the measurement-result, the function indicating a second magnetization corresponding to the external-magnetic field in a closed-magnetic circuit, the function including a parameter having a value, calculate a diamagnetic-field corresponding to the external-magnetic field based on the second magnetization for each of the meshes, calculate a third magnetization of the permanent-magnet, calculate an average of the third magnetizations, calculate an error between the first magnetization and the calculated average, correct the value of the parameter, and repeat the calculation of the second magnetization, the diamagnetic-field, the third magnetizations, the average, and the error, and the correction of the value of the parameter until the error falls
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: October 6, 2020
    Assignee: FUJITSU LIMITED
    Inventors: Jun Fujisaki, Atsushi Furuya, Hideyuki Shitara
  • Patent number: 10712400
    Abstract: A vertical Hall sensor circuit comprises an arrangement comprising a vertical Hall effect region of a first doping type, formed within a semiconductor substrate and having a stress dependency with respect to a Hall effect-related electrical characteristic. The vertical Hall sensor circuit further comprises a stress compensation circuit which comprises at least one of a lateral resistor arrangement and a vertical resistor arrangement. The lateral resistor arrangement has a first resistive element and a second resistive element, which are parallel to a surface of the semiconductor substrate and orthogonal to each other, for generating a stress-dependent lateral resistor arrangement signal on the basis of a reference signal inputted to the stress compensation circuit.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: July 14, 2020
    Assignee: Infineon Technologies AG
    Inventors: Mario Motz, Udo Ausserlechner
  • Patent number: 10684331
    Abstract: A current sensor may comprise a first Hall cell, a second Hall cell, a third Hall cell, a fourth Hall cell, and a fifth Hall cell to a set of magnetic field values associated with a magnetic field generated by a current passing through a current rail. The second Hall cell may be positioned at a first distance from the first Hall cell, and the third Hall cell may be positioned at a second distance from the first Hall cell such that the third Hall cell is positioned between the first Hall cell and the second Hall cell. The fourth Hall cell may be positioned adjacent to the first Hall cell, and the fifth Hall cell may be positioned at a third distance from the fourth Hall cell. The magnetic field values may be used to determine an amount of current associated with the current passing through the current rail.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: June 16, 2020
    Assignee: Infineon Technologies AG
    Inventor: Akos Hegedus
  • Patent number: 10677751
    Abstract: A sensor calibration device for calibrating a sensor device, includes a sensor reader configured to read, from a reference sensor, a physical quantity which is a reference of a calibration and detected by the reference sensor, and a sensor manager configured to convert the physical quantity read by the sensor reader into a reference measurement value, the sensor manager being configured to obtain a calibration target measurement value obtained by the sensor device measuring the physical quantity, and the sensor manager being configured to output, to the sensor device, a calibration instruction based on the reference measurement value and the calibration target measurement value.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: June 9, 2020
    Assignee: Yokogawa Electric Corporation
    Inventors: Masahide Yoshikawa, Tomoaki Eto, Shouji Igarashi, Yuichi Nozaka
  • Patent number: 10670636
    Abstract: Provided is a current detection device capable of reducing manufacturing cost. A current detection device 1 includes a plate-like bus bar, a printed circuit board on which a magnetic field detecting element is mounted, a magnetic member, and a housing holding these components. The bus bar can be assembled into the housing by sliding in its longitudinal direction. The housing includes a first rib pressing the bus bar to restrict a movement in a thickness direction of the bus bar, a second rib pressing the bus bar to restrict a movement in a width direction of the bus bar, and a retaining protrusion fitting into a cutout portion provided at both sides in a width direction of the bus bar so as to retain the bus bar in a longitudinal direction of the bus bar.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: June 2, 2020
    Assignee: YAZAKI CORPORATION
    Inventors: Toshiaki Fukuhara, Makoto Sei
  • Patent number: 10665921
    Abstract: An RFID antenna structure is disclosed that is designed to operate in proximity to metal surfaces. The RFID antenna structure is placed at 90 degrees to the surface of the metallic object, allowing it to operate with minimal separation from the edge of the RFID antenna structure to the metallic object. In another embodiment, the RFID antenna structure comprises an anti-tamper embodiment wherein a RFID tag device is applied to twist and flip-top cap containers, such that tearing along the perforations on the cap disables the RFID tag device.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: May 26, 2020
    Assignee: Avery Dennison Retail Information Services, LLC
    Inventor: Ian James Forster
  • Patent number: 10663535
    Abstract: Various embodiments discussed herein can comprises systems or methods that can improve over existing spinning current Hall sensor systems via at least one of interleaving spinning phases or sliding averaging/summing. One example embodiment can comprise a sensor system comprising M (a positive integer) spinning current Hall sensors, each of which has N (an integer greater than one) distinct spinning phases during which it can acquire sensor data, and a multiplexer that can select sensor data of the sensors according to a M×N spinning phase sensor sequence. The M×N distinct spinning phases of the sensor sequence can be interleaved, wherein the average in the time domain of the N spinning phases for each sensor is the same. For each of the M sensors, a sum and/or an average can be determined for one or more most recent representations of sensor data from that sensor.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: May 26, 2020
    Assignee: Infineon Technologies AG
    Inventor: Mario Motz
  • Patent number: 10641841
    Abstract: A magnetic sensor circuit includes: one of a first magnetic sensor element configured to output a voltage in accordance with a vertical magnetic field and a second magnetic sensor element configured to output a voltage in accordance with a horizontal magnetic field; a magnetic field signal processing circuit configured to output a signal in accordance with the voltage; at least three terminals capable of being connected to an external element, the at least three terminals being a first, a second, and a third terminal; a first wiring connecting the first terminal and the second terminal; and a second wiring connecting the first terminal and the third terminal in which one of the first magnetic sensor element and the second magnetic sensor element is arranged at a position where detection of a magnetic field generated by one of the first wiring and the second wiring is capable.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: May 5, 2020
    Assignee: ABLIC INC.
    Inventor: Tomoki Hikichi
  • Patent number: 10620278
    Abstract: An apparatus for magnetic field detection comprises a plurality of magnetic field sensitive devices comprising at least a first magnetic field sensitive device, a second magnetic field sensitive device and a third magnetic field sensitive device. The apparatus comprises a power source configured to provide a first supply current through the first magnetic field sensitive device and a second supply current independent of the first supply current through the second magnetic field sensitive device. The first to third magnetic field sensitive devices are coupled such that the first supply current flows through the first magnetic field sensitive device and not through the second magnetic field sensitive device, the second supply current flows through the second magnetic field sensitive device and not through the first magnetic field sensitive device, and a sum of the first supply current and the second supply current flows through the third magnetic field sensitive device.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: April 14, 2020
    Assignee: Infineon Technologies AG
    Inventor: Udo Ausserlechner
  • Patent number: 10613669
    Abstract: A display panel and a display device reduces the adverse effects on touch function and display function caused by high heat generation of a force-sensing sensor. The display panel includes, in part, a force sensing sensor, an amplification circuit and a drive chip. The force-sensing sensor includes a first input, a second input, a first output and a second output. The amplification circuit is associated with the force-sensing sensor and includes a first amplification input, a second amplification input and at least one amplification output, wherein the first amplification input of the amplification circuit is coupled to the first output of the force-sensing sensor and the second amplification input of the amplification circuit is coupled to the second output of the force-sensing sensor. The drive chip is coupled to the amplification output of the amplification circuit.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: April 7, 2020
    Assignee: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Feng Lu, Haga Hiroshi, Takatori Kenichi, Yingteng Zhai
  • Patent number: 10615333
    Abstract: The vertical Hall element includes: a semiconductor layer of a second conductivity type formed on a semiconductor substrate of a first conductivity type; a first electrode set formed in a surface of the semiconductor layer and including a first drive current supply electrode, a Hall voltage output electrode, and a second drive current supply electrode aligned along a straight line extending in a first direction in this order; and second to fifth electrode sets each having the same configuration as the configuration of the first electrode set and aligned with the first electrode set along a straight line extending in a second direction perpendicular to the first direction. The Hall voltage output electrode has a first depth, the first and second drive current supply electrodes have a second depth that is larger than the first depth.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: April 7, 2020
    Assignee: ABLIC INC.
    Inventor: Takaaki Hioka
  • Patent number: 10551427
    Abstract: A method for determining a two-dimensional spectrum of a specified carrier having a specified mobility and density in a material of an electronic device, the method including performing a magnetic field-dependent Hall measurement on the material of the electronic device; determining, using the magnetic field-dependent Hall measurement, a probability density function of a conductance of the material of the electronic device, wherein the probability density function describes a spectrum of a plurality of m-carriers, wherein the plurality of m-carriers includes the specified carrier having the specified mobility and density; and determining an electrical transport of a plurality of electrons and holes inside the material of the electronic device by observing a variation of the probability density function with any of the specified mobility and density of the specified carrier.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: February 4, 2020
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: William A. Beck
  • Patent number: 10488458
    Abstract: Methods and apparatus for providing an integrated circuit having a drive current source, a magnetic sensing element coupled to the drive current source, the magnetic sensing element having first and second differential outputs, and first and second current elements to provide respective currents in relation to the drive current source, wherein the first current element is coupled to the first differential output and the second current element is coupled to the second differential output. In illustrative embodiments, an IC output can output a voltage corresponding to the currents of the first and second current elements.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: November 26, 2019
    Assignee: Allegro MicroSystems, LLC
    Inventors: Shaun D. Milano, Georges El Bacha, Michael C. Doogue, David J. Haas, Gregory Delmain, Michael Gaboury, William P. Taylor
  • Patent number: 10466311
    Abstract: A method and apparatus for sensing magnetic field strength with a pair of Hall effect sensors includes sampling a sensed voltage for the Hall effect sensors during a first phase and combining the sensed voltage. During a second phase, obtaining sensed voltages for the Hall effect sensors and combining the sensed voltages. The sensed voltages from the first phase and the second phase are combined to obtain a summed voltage and remove the Hall effect sensor and amplifier offset error value. In one arrangement, the summed voltage corresponds to the sensed Hall voltage of the first Hall effect sensor added to the Hall voltage of the second Hall effect sensor. In another arrangement, the summed voltage corresponds to the sensed Hall voltage of the first Hall effect sensor subtracted by the sensed Hall voltage of the second Hall effect sensor. Changes in the summed voltage with respect to a reference voltage are counted to determine the speed of a rotating shaft having magnets or a similar arrangement.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: November 5, 2019
    Assignee: The Timken Company
    Inventors: Lei Wang, Alfred J. Santos, Mark E. Lacroix
  • Patent number: 10393848
    Abstract: A calibration tool for calibrating a magnetic sensor comprises a cuboid-shaped housing and one or more permanent magnets. The housing is configured to provide six alignment planes. The alignment planes lying opposite to each other extend parallel to each other and the alignment planes lying adjacent to each other include an angle of 90°. The housing has one or more holes allowing to position a magnetic sensor in a working volume located in the center of the housing. The housing may have six sidewalls. One or more of the sidewalls may include one or more adjustable element protruding from the respective sidewall. The adjustable elements may be screws. Permanent magnets of different materials having different temperature coefficients may be used to eliminate the temperature dependence of the magnetic field in the working volume.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: August 27, 2019
    Assignee: SENIS AG
    Inventors: Marjan Blagojevic, Radivoje Popovic, Sasa Spasic
  • Patent number: 10386392
    Abstract: A Hall element driving circuit includes: a signal switching unit which is disposed between a power supply, which outputs a current, and a Hall element having first and second terminals and performs switching control between a first switching state that supplies the current to the first terminals and a second switching state that supplies the current to the second terminals; a switching control unit that controls transitions between the first switching state and the second switching state; and a switching unit that is disposed between the power supply and the signal switching unit and controls switching between an on state where the current is supplied and an off state where the current is stopped. The switching control unit controls transitions between the on and off states and executes switching control over the signal switching unit only when the switching unit is in the off state.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: August 20, 2019
    Assignee: HIOKI DENKI KABUSHIKI KAISHA
    Inventors: Atsushi Nakayama, Masakazu Ikeda, Youhei Sakurai
  • Patent number: 10382024
    Abstract: An omnipolar magnetic sensor system includes an input stage and a behavior component. The input stage is configured to receive a source signal and to selectively chop the source signal. Further, the input stage is configured to balance the source signal using behavior parameters and generate a balanced source signal.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: August 13, 2019
    Assignee: Infineon Technologies AG
    Inventor: Mihai Alexandru Ionescu
  • Patent number: 10371850
    Abstract: A magnetic sensor for borehole magnetometer includes an upper-opened pipe-shaped housing; a frame installed at an inside of the housing; an upper-opened magnetic sensor part installed at a bottom side of the frame; a lid covering the opened upper side of the magnetic sensor part; and a magnetic sensor disposed at an inside of the magnetic sensor part to measure a magnetic force, wherein an upper side and a bottom side of the magnetic sensor is respectively installed with a spring, a bottom side of the lid and the magnetic sensor part are formed with a fixing groove for fixing an upper spring and a bottom spring each installed at an upper side and a bottom side of the magnetic sensor.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: August 6, 2019
    Assignee: AAT CO. LTD.
    Inventors: Kyung Soo Bahk, Chang Shik Lee, Kyu Jung Kim, Sang-Mook Lee
  • Patent number: 10373051
    Abstract: Embodiments are directed to a two-terminal resistive processing unit (RPU) having a first terminal, a second terminal and an active region. The active region effects a non-linear change in a conduction state of the active region based on at least one first encoded signal applied to the first terminal and at least one second encoded signal applied to the second terminal. The active region is configured to locally perform a data storage operation of a training methodology based at least in part on the non-linear change in the conduction state. The active region is further configured to locally perform a data processing operation of the training methodology based at least in part on the non-linear change in the conduction state.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: August 6, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Tayfun Gokmen, Seyoung Kim, Yurii A. Vlasov
  • Patent number: 10352969
    Abstract: Systems and methods described herein are directed towards integrating a shield layer into a current sensor to shield a magnetic field sensing element and associated circuitry in the current sensor from electrical, voltage, or electrical transient noise. In an embodiment, a shield layer may be disposed along at least one surface of a die supporting a magnetic field sensing element. The shield layer may be disposed in various arrangements to shunt noise caused by a parasitic coupling between the magnetic field sensing element and the current carrying conductor away from the magnetic field sensing element.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: July 16, 2019
    Assignee: Allegro MicroSystems, LLC
    Inventors: Shaun D. Milano, Bryan Cadugan, Michael C. Doogue, Alexander Latham, William P. Taylor, Harianto Wong, Sundar Chetlur
  • Patent number: 10353019
    Abstract: A high dynamic range magnetometer architecture and method are disclosed. In an embodiment, a magnetometer sensor comprises: a variable magnetic gain stage including a plurality of selectable signal gain paths, each signal gain path including a magnetic sensor and a magnetic flux concentrator, and for each signal gain path the magnetic flux concentrator being positioned a different distance from the magnetic flux concentrator to provide a different magnetic gain for the signal gain path; a variable magnetic sensing stage coupled to the variable magnetic gain stage, the variable magnetic sensing stage operable to provide variable magnetic sensing to each signal gain path; and a gain control stage coupled to the variable magnetic sensing stage, the gain control stage operable to select one of the signal gain paths and to provide signal conditioning to the selected signal gain path.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: July 16, 2019
    Assignee: Apple Inc.
    Inventor: Jian Guo
  • Patent number: 10337887
    Abstract: A magnetic sensor includes: a magnetic converging plate; Hall elements disposed on one surface side of the magnetic converging plate; wires connecting with the Hall elements; and a signal processing circuit that connects with these wires to receive a signal from the Hall element. Between the Hall element and the signal processing circuit, the two wires cross while being spaced apart from each other in a depth direction of a substrate, and forms a compensation loop between a cross of the two wires and the circuit, and in a planar view as seen in a depth direction, at least part of a region occupied by the compensation loop is covered by the magnetic converging plate. The compensation loop compensates an induced electromotive force caused to the closed loop formed by the wires including the Hall element.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: July 2, 2019
    Assignee: Asahi Kasei Microdevices Corporation
    Inventors: Ryuji Nobira, Takenobu Nakamura
  • Patent number: 10333056
    Abstract: A method of forming a 3D Hall effect sensor and the resulting device are provided. Embodiments include forming a p-type well in a substrate; forming a first n-type well in a first region surrounded by the p-type well in top view; forming a second n-type well in a second region surrounding the p-type well; providing n-type dopant in the first and second n-type wells; and providing p-type dopant in the p-type well and the first n-type well.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: June 25, 2019
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Bin Liu, Eng Huat Toh, Ruchil Kumar Jain
  • Patent number: 10197420
    Abstract: A magnetic sensor circuit includes: a first Hall element configured to output a first signal and a second signal; a second Hall element configured to output a third signal and a fourth signal; a signal switching unit configured to select signals among the first to the fourth signal to provide at least two different types of signals as first output signals, by selecting signals each having the signal component having the opposite phase when the offset components each have the same phase, and by selecting signals each having the signal component having the same phase when the offset components each have the opposite phase; and a signal processing unit configured to output second output signals in which the respective offset components of the first output signals are reduced.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: February 5, 2019
    Assignee: ABLIC INC.
    Inventor: Ryosuke Mori
  • Patent number: 10191089
    Abstract: A current sensing assembly includes a conductor having a first side, a second side opposite the first side, a third side, and a fourth side opposite the third side. The first side has a first notch formed therein and the second side has a second notch formed therein opposite the first notch. The current sensing assembly also includes a sensor assembly including a first magnetic sensor disposed in the first notch or proximate to the third side of the conductor between the first and second notches, and a second magnetic sensor disposed in the second notch or proximate to the fourth side of the conductor between the first and second notches.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: January 29, 2019
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: Mark Allan Juds, Jerome Kenneth Hastings
  • Patent number: 10175270
    Abstract: An integrated current sensor system has a printed circuit board with a magnetic field sensor with a sensor interface. The printed circuit board has a first side on which, isolated from the printed circuit board, a first current conductor is arranged with a longitudinal edge of a portion of the first current conductor being proximate to a sensitive area of sensor. The circuit board has a second side on which a second current conductor is, isolated from the printed circuit board, arranged, wherein a longitudinal edge of a portion of the second current conductor is arranged proximate to the sensitive area. The first and the second current conductor are electrically connected with at least one conductive via.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: January 8, 2019
    Assignee: ams AG
    Inventor: Harald Etschmaier