Magnetoresistive Patents (Class 324/207.21)
  • Patent number: 10859404
    Abstract: A magnetic revolution counter for the self-identification of error states includes magnetic domain wall conductors which are composed of open spirals or closed, multiply-wound loops, formed by a GMR layer stack or a sort magnetic layer of locally present TMR layer stacks and in which the magnetic 180° domain walls can be introduced and located, wherein a predefinable bijective magnetization pattern of domain walls and/or domain wall gaps is written in, and the associated signal levels thereof are stored in the form of signal level sequences in a first memory in tabular form, which is compared to tabular target value patterns of the signal level sequences stored in a second memory for each permissible revolution i (0?i?n), and a third memory is provided, in which tabular error target value patterns of deviations of signal level sequences, caused thereby, from regular signal level sequences stored in the second memory are stored.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: December 8, 2020
    Assignees: Horst Siedle GmbH & Co. KG, Leibniz-Institut Fuer Photonische Technologien E.V.
    Inventors: Marco Diegel, Peter Dingler, Roland Mattheis, Manfred Scherzinger
  • Patent number: 10859642
    Abstract: An object of the present invention is to provide a magnetic sensor having enhanced magnetic detection sensitivity by bending magnetic flux more largely. A magnetic sensor includes magnetic detection elements MR1 and MR2 positioned on a plane P separating a first space S1 and a second space S2, a first magnetic member 31 disposed in the first space S1 so as to be between the magnetic detection elements MR1 and MR2 when viewed in the z-direction, and a second magnetic member 32 disposed in the second space S2. The magnetic detection element MR1 is positioned between the first magnetic member 31 and a first part 32a of the second magnetic member 32 when viewed in the z-direction. The magnetic detection element MR2 is positioned between the first magnetic member 31 and a second part 32b of the second magnetic member 32 when viewed in the z-direction.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: December 8, 2020
    Assignee: TDK CORPORATION
    Inventor: Kei Tanabe
  • Patent number: 10843414
    Abstract: There is described a unit (1) for forming/advancing at least one pack (3) or at least one portion of a pack 5 (3), comprising: a frame (12a, 12b), at least one carriage (14, 14b), which is movable along a path (13a, 13b) with respect to frame (12a, 12b) and is adapted to form/advance said pack (3) or said at least one portion of a pack (3), an electromagnetic stationary device 10 (50), at least one tag (52a, 52b) carried by carriage (14a, 14b), and wireless communication means (51) configured to establish a bidirectional communication between stationary device (50) and tag (52a, 52b).
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: November 24, 2020
    Assignee: TETRA LAVAL HOLDINGS & FINANCE S.A.
    Inventors: Antonio Melandri, Stefano Rossi, Vittoria Lanza, Davide Borghi
  • Patent number: 10838019
    Abstract: A magnetic sensor includes a first magnetoresistive element that detects a magnetic field along a first detection axis, a second magnetoresistive element that detects a magnetic field along a second detection axis inclining at an angle of 45 degrees with respect to the first detection axis, a first Hall element that detects a magnetic field along a third detection axis, and a second Hall element that detects a magnetic field along a fourth detection axis perpendicular to the third detection axis. This magnetic sensor has both characteristics of the Hall elements and characteristics of the magnetoresistive elements, and has high accuracy and a small size.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: November 17, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kazuhiro Onaka, Noritaka Ichinomiya, Shigehiro Yoshiuchi, Kiyotaka Yamada
  • Patent number: 10830571
    Abstract: Techniques for sensing position using a magnetic field direction sensor are provided. In an example, a system can include a magnet, a first magnetic field direction sensor, positioned between the magnet and a magnetic feature of a first structure, the sensor configured to move with the magnet and to measure a direction of a magnetic field produced by the magnet relative to a first axis (x). In certain examples, the magnetic feature is configured change position with respect to the magnetic sensor along the first axis (x) as a relative position between the magnet and the magnetic feature changes with respect to a second axis (y).
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: November 10, 2020
    Assignee: Analog Devices International Unlimited Company
    Inventors: Jochen Schmitt, Enda Joseph Nicholl
  • Patent number: 10809094
    Abstract: Methods and apparatus for a sensor system having a first magnetic field sensing element with first and second segments where the first and second segments are located at positions to generate magnetic field bias in opposite directions for reducing sensitivity due to misalignment of the first and second segments. A processing module is configured to receive an output of the magnetic field sensing element.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: October 20, 2020
    Assignee: Allegro MicroSystems, LLC
    Inventors: Andrea Foletto, Rémy Lassalle-Balier, Yannick Vuillermet, Paul A. David, Jeffrey Eagen
  • Patent number: 10802074
    Abstract: An apparatus and method for analyzing phase noise in a signal. A plurality of signal samples, each signal sample representing a value of phase noise in a signal-under-test at a corresponding offset frequency, and filter data representing filter characteristics on a first side of a spectrum boundary, are used to derive filtered signal samples. A measure of noise is derived from the filtered signal samples. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: October 13, 2020
    Assignee: JITTERLABS LLC
    Inventor: Gary Giust
  • Patent number: 10794752
    Abstract: A direct-read meter capable of eliminating magnetic interference of adjacent rotating wheels, comprising N coaxial rotating wheel permanent magnets and corresponding magnetic angle sensors, a sampling element, a storage element, and a computation element. The magnetic angle sensors sense a linear superposition of the magnetic field from the intended permanent magnet rotating wheel and the interfering magnetic fields from the other rotating wheel permanent magnets. The sampling element samples the output signals of the N magnetic angle sensors to form a N*1 raw signal matrix [V/Vp]k(i)raw. The storage element stores an N*N correction matrix [Cij]; and the computation element computes the correction signal matrix [V/Vp]kcorr(i)=[V/Vp]k(i)raw?sum{C(i, j)*[V/Vp]k(j)raw}, thus eliminating the interfering magnetic field and permitting calculation of the rotation angle of the rotating wheel permanent magnets.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: October 6, 2020
    Assignee: MultiDimension Technology Co., Ltd.
    Inventors: James Geza Deak, Zhimin Zhou
  • Patent number: 10782365
    Abstract: A magnetic field sensor includes: a first magnetoresistance effect element; a second magnetoresistance effect element; an output port; a signal line; and a first input terminal configured to be capable of applying a DC current or a DC voltage to the first magnetoresistance effect element. Each of the first magnetoresistance effect element and the second magnetoresistance effect element includes a first magnetic layer, a second magnetic layer, and a spacer layer disposed therebetween, the first magnetoresistance effect element and the second magnetoresistance effect element are connected through the signal line, and the output port is connected in parallel with the second magnetoresistance effect element.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: September 22, 2020
    Assignee: TDK CORPORATION
    Inventor: Tetsuya Shibata
  • Patent number: 10775196
    Abstract: The invention relates to a system comprising: an encoder the magnetic track of which has an alternation of North and South magnetic poles separated by transitions in Archimedean spiral, a rotation sensor able to detect the periodic magnetic field emitted by the encoder using a plurality of magnetic sensitive elements, distributed angularly along the magnetic track. Each magnetic sensitive element delivers a signal representative to the rotation of the encoder. The sensor further comprises a device for subtracting the signals (V1, V2) delivered by two sensitive elements forming therebetween an angle ? that is such that: 0.55?<?·Npp, <0.83?, modulo 2? or 1.17?<?·Npp<1.45?, modulo 2?.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: September 15, 2020
    Assignee: NTN-SNR Roulements
    Inventor: Christophe Duret
  • Patent number: 10760927
    Abstract: A sensor arrangement for contactless linear position detection includes a target having a measuring transducer running along a measuring path, and a magnetic field sensor arranged at a distance from the measuring transducer and in a relatively movable manner along the measuring path. The magnetic field sensor at least partially covers the measuring transducer. The measuring transducer is magnetically conductive. The magnetic field sensor includes a carrier having at least one measuring sensor with a two-dimensional or three-dimensional detection range, and at least one permanent magnet that generates a local magnetic field. The magnetic flux of the at least one permanent magnet is introduced into the measuring transducer, which includes an influencing device configured to influence the introduced magnetic flux based on a current position of the magnetic field sensor along the measuring path.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: September 1, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Thomas Buck, Anna Krause, Stefan Leidich
  • Patent number: 10753768
    Abstract: A magnetic field sensor has a plurality of magnetic field sensing elements and operates as a motion detector for sensing a rotation or other movement of a target object.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: August 25, 2020
    Assignee: Allegro MicroSystems, LLC
    Inventors: Paul A. David, William P. Taylor
  • Patent number: 10746569
    Abstract: A magnetic angle sensing system is suggested comprising first, second, and third magnetic sensing devices, a substrate comprising the first, second and third magnetic sensing devices, wherein the first, seconds and third magnetic sensing devices are each arranged such to be responsive to a magnetic field component that is perpendicular to a main surface of the substrate, wherein each or the first, second and third magnetic sensing devices comprises the same number of magnetic sensing elements, wherein the second magnetic sensing device is arranged on the semiconductor surface rotated by 120° in view of the first magnetic sensing device clockwise around a reference point, wherein the third magnetic sensing device is arranged on the semiconductor surface rotated by 120° in view of the first magnetic sensing device counter-clockwise around the reference point.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: August 18, 2020
    Assignee: Infineon Technologies AG
    Inventor: Udo Ausserlechner
  • Patent number: 10724844
    Abstract: An example multi-turn counter (MTC) sensor includes a magnetic strip that includes a domain wall generator located at a first end of the magnetic strip, where the domain wall generator is to generate at least one domain wall in the magnetic strip, the at least one domain wall configured to propagate based on a magnetic field caused by a magnet; wherein a location of the at least one domain wall indicates a turn count of the magnetic field of the magnet; the turn count to indicate one or more of a predefined fraction of a full rotation of the magnetic field; an end tip located at a second end of the magnetic strip, where the second end of the magnetic strip is opposite the first end; and a plurality of overlapping strip turns that cause a plurality of crossings in the magnetic strip.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: July 28, 2020
    Assignee: Infineon Technologies AG
    Inventors: Jürgen Zimmer, Sebastian Luber, Thomas Bever, Hansjoerg Walter Kuemmel, Christian Kegler
  • Patent number: 10670669
    Abstract: A magnetic field sensor can include a substrate disposed in an x-y plane with x and y axes; one or more magnetoresistance elements, wherein magnetic directions of reference layers of each of the one or more magnetoresistance elements are parallel to the x axis; wherein the one or more magnetoresistance elements are operable to generate a magnetoresistance element signal; a first current conductor operable to generate a first AC magnetic field in an x-direction and a second current conductor operable to generate a second AC magnetic field in a y-direction; and a component determination circuit comprising at least two of: a first demodulator to demodulate the magnetoresistance element signal with a first clock signal with a first frequency, a second demodulator coupled to demodulate the magnetoresistance element signal with the first clock signal or with a second clock signal with a second frequency, or a low pass filter operable to filter the magnetoresistance element signal.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: June 2, 2020
    Assignee: Allegro MicroSystems, LLC
    Inventors: Rémy Lassalle-Balier, Bryan Cadugan
  • Patent number: 10649043
    Abstract: Magnetic field sensor devices and associated methods are disclosed. Magnetic field sensor devices may comprise a first magnetic field sensor having a first bridge part spatially separated from a second bridge part. In some implementations, a second magnetic field sensor may be arranged between the first bridge part and the second bridge part. With this arrangement, measurements read by the magnetic field sensor device have high precision and low jitter.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: May 12, 2020
    Assignee: Infineon Technologies AG
    Inventor: Wolfgang Raberg
  • Patent number: 10634739
    Abstract: A magnetic sensor device (10) includes a magnetic sensor unit including a magnetoresistive element mounted on a sensor board extending in a longitudinal direction and a magnet (3) located on a surface of the sensor board opposite to a surface on which the magnetoresistive element is mounted, a housing supporting the magnetic sensor unit, a magnetic shield unit (4) covering side surfaces and a bottom surface of the housing, and a cover covering an upper portion of the housing. The magnetic shield unit (4) has an opening (4o) facing in Z-axis direction from the magnetoresistive element toward a transport path of a sensing target. The opening (4o) is defined by two long sides in the longitudinal direction and two short sides in a lateral direction. The two long sides of the magnetic shield unit (4) are nearer to the sensing target in Z-axis direction than the two short sides.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: April 28, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tomokazu Ogomi, Kenji Shimohata, Hideki Matsui, Sadaaki Yoshioka
  • Patent number: 10627256
    Abstract: A rotation angle detecting device includes: a rotating part rotating integrally with the rotating shaft and including a detected portion; an A-phase detector detecting change of a physical quantity caused by rotation of the rotating part, inside a first detection field over the detected portion and outputting an A-phase signal; and a B-phase detector detecting change of the physical quantity caused by rotation of the rotating part, inside a second detection field located over the detected portion and outputting a B-phase signal that is out of phase with the A-phase signal. The second detection field is shorter than the first detection field with respect to the direction perpendicular to the rotating direction of the rotating part.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: April 21, 2020
    Assignee: FANUC CORPORATION
    Inventor: Akira Nishioka
  • Patent number: 10605874
    Abstract: A magnetic field sensor includes a substrate having a surface and a plurality of magnetoresistance elements supported by the surface of the substrate. Each magnetoresistance element has a respective width parallel to the surface, and each width may be a smallest dimension parallel to the surface. A first width of a first magnetoresistance element of the plurality of magnetoresistance elements may be different from a second width of a second magnetoresistance element of the plurality of magnetoresistance elements. A processing circuit may be coupled to the plurality of magnetoresistance elements to receive a signal representing a detected magnetic field from at least one of the magnetoresistance elements.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: March 31, 2020
    Assignee: Allegro MicroSystems, LLC
    Inventors: Rémy Lassalle-Balier, Jeffrey Eagen, Andrea Foletto
  • Patent number: 10600541
    Abstract: There is provided a compression-bonded magnet with a case, which can realize high magnetic properties, high corrosion resistance and high durability strength even at low cost.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: March 24, 2020
    Assignee: NTN CORPORATION
    Inventors: Shinji Miyazaki, Takuji Harano, Tatsuo Nakajima
  • Patent number: 10591315
    Abstract: A magnetic sensor device for determining a rotation direction of a magnetic component about a rotation axis is provided. The magnetic sensor device includes a bridge circuit with a first half-bridge and a second half-bridge. Each of the first half-bridge and the second half-bridge comprises at least one magnetoresistive structure. Further, the magnetic sensor device includes an evaluation circuit configured to determine the rotation direction of the magnetic component based on a phase difference between an output signal of the first half-bridge and an output signal of the second half-bridge.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: March 17, 2020
    Assignee: Infineon Technologies AG
    Inventors: Mihai Alexandru Ionescu, Tobias Werth
  • Patent number: 10591274
    Abstract: A magnetic angle sensor device and a method for operating such device is provided. The magnetic angle sensor device includes a shaft rotatable around a rotation axis; a magnetic arrangement coupled to the shaft, where the magnetic arrangement produces a differential magnetic field comprising a plurality of diametric magnetic fields; a first magnetic angle sensor provided in the differential magnetic field and configured to generate a first signal that represents a first angle based on a first diametric magnetic field of the differential magnetic field; a second magnetic angle sensor provided in the differential magnetic field and configured to generate a second signal that represents a second angle based on a second diametric magnetic field of the differential magnetic field; and a combining circuit configured to determine a combined rotation angle based on the first signal and on the second signal.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: March 17, 2020
    Assignee: Infineon Technologies AG
    Inventors: Udo Ausserlechner, Wolfgang Granig
  • Patent number: 10562715
    Abstract: A method and system for detecting and reporting component failures in a linear drive system may identify failed position sensors, failed position magnets, and failed drive coils in the linear drive system. As a mover travels along a track segment in the linear drive system, signals corresponding to the position of the mover and to the current commanded in each drive coil are stored. Analysis of the stored signals identifies whether one of the position sensors along the track segment, one of the position magnets on the movers, or one of the drive coils, used to propel the movers along the track, has failed.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: February 18, 2020
    Assignee: Magnemotion, Inc.
    Inventor: Yuhong Huang
  • Patent number: 10557825
    Abstract: Described herein is a method of inspecting a part for defects. The method includes applying an electromagnetic field to the part using a defect detection coil and one or more noise cancelation coils. The method also includes detecting feedback received in response to applying the electromagnetic field. The method includes adjusting settings corresponding to the one or more noise cancelation coils, in response to the feedback, to reduce electromagnetic noise.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: February 11, 2020
    Assignee: The Boeing Company
    Inventors: Morteza Safai, Keith D. Humfeld
  • Patent number: 10551447
    Abstract: A magnetic field sensing apparatus including a magnetic flux concentrator, a plurality of magnetoresistance units, and a plurality of magnetization direction setting elements is provided. The magnetic flux concentrator has a top surface, a bottom surface opposite to the top surface, and a plurality of side surfaces connecting the top surface and the bottom surface. The magnetoresistance units are respectively disposed beside the side surfaces. The magnetoresistance units are electrically connected to form an unchangeable Wheatstone full bridge. The magnetization direction setting elements set the magnetization directions of the magnetoresistance units into three different combinations in three different periods, respectively, so as to enable the unchangeable Wheatstone full bridge to respectively measure the magnetic field components in the three different directions in the three different periods.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: February 4, 2020
    Assignee: iSentek Inc.
    Inventors: Fu-Te Yuan, Jen-Tzong Jeng, Meng-Huang Lai
  • Patent number: 10527158
    Abstract: An electronic transmission range selection (ETRS) system for a motor vehicle transmission includes an ETRS housing disposed on the transmission, the ETRS housing having a magnetic field sensor in communication with a transmission controller; and a magnetic field source including a magnet component and a high magnetic permeability component. The magnetic field source disposed on a transmission selector shaft, the magnetic field source detectable by the magnetic field sensor at a plurality of predetermined positions along a movement path of the transmission selector shaft; and the magnetic field sensor detecting magnetic flux generated by the magnetic field source, and communicating magnetic field source position information to the controller. The high magnetic permeability component homogenizes the magnetic flux generated by the magnet component and the controller generates an electronic transmission mode signal based on the magnetic field source position information.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: January 7, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Sean R. Wagner, Thomas A. Perry, David T. Stark
  • Patent number: 10527455
    Abstract: A sensor assembly is provided for determining an angular position of a rotor in relation to a stator, including two components, a magnet and a sensor, where the components are arranged in such a way that the components can be rotated in relation to each other about an axis of rotation, and the sensor includes a first and a second sensor pair, each having a first and a second sensor element. A straight line is associated with each sensor pair, along which straight line the two sensor elements lie and which straight line intersects with the axis of rotation, where the first sensor element has a smaller distance from the axis of rotation than the second sensor element, and the straight line associated with the first sensor pair is spaced apart from the straight line associated with the second sensor pair by a rotational angle about the axis of rotation.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: January 7, 2020
    Assignee: MAX BAERMANN GMBH
    Inventor: Thomas Schliesch
  • Patent number: 10522742
    Abstract: A spin current magnetization reversal element includes: a first ferromagnetic metal layer with a changeable magnetization direction; and a spin-orbit torque wiring, wherein a first direction is perpendicular to a surface of the layer, the wiring extends in a second direction intersecting the first and is bonded to the layer, wherein the wiring material is a binary alloy represented by the formula AxB1-x, a metal carbide, or metal nitride, wherein A is selected from Al, Ti, and Pt, and B is selected from Al, Cr, Mn, Fe, Co, Ni, Y, Ru, Rh, and Ir and the material has a cubic structure with symmetry of a space group Pm-3m or Fd-3m; or A is selected from Al, Si, Ti, Y, and Ta, and B is selected from C, N, Co, Pt, Au, and Bi and the material has a cubic structure with symmetry of a space group Fm-3m.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: December 31, 2019
    Assignee: TDK CORPORATION
    Inventors: Yohei Shiokawa, Tomoyuki Sasaki
  • Patent number: 10502543
    Abstract: An embodiment relates to a magnetic angle sensor device comprising a first group of magnetic angle sensors and a second group of magnetic angle sensors, wherein the first group of magnetic angle sensors and the second group of magnetic angle sensors are located on different positions along a straight line, wherein the first group of magnetic angle sensors comprises at least one first type of angle sensor and at least one second type of angle sensor, wherein the second group of magnetic angle sensors comprises the at least one first type of angle sensor and the at least one second type of angle sensor, wherein the at least one first type of angle sensor is sensitive to detect a first magnetic field component in a first direction and the at least one second type of angle sensor is sensitive to detect a second magnetic field component in a second direction, and wherein a combined rotation angle is determined based on the detected first magnetic field components and the detected second magnetic field components.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: December 10, 2019
    Assignee: Infineon Technologies AG
    Inventor: Udo Ausserlechner
  • Patent number: 10480963
    Abstract: An absolute position readout apparatus includes an encoder device and a readout device. The readout device includes multiple first and second magnetic sensing components that correspond to an absolute track of the encoder device, and a third magnetic sensing component and a fourth magnetic sensing components that correspond to an incremental track of the encoder device. The third magnetic sensing component is configured to be spaced apart from the fourth magnetic sensing component by a specific distance, so as to prevent misreading of absolute position information from the first or second magnetic sensing components being at positions corresponding to boundaries between adjacent magnetized regions of the absolute track.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: November 19, 2019
    Assignee: Hiwin Mikrosystem Corp.
    Inventors: Heng-Sheng Hsiao, Chi-Yuan Cheng, Cheng-Kuo Sung, Tsung-Shune Chin, Sheng-Ching Wang, Jen-Yuan Chang
  • Patent number: 10475305
    Abstract: It is presented a method for detecting a position of a barrier. The method is performed in a status monitor device and comprising the steps of: detecting a barrier position of the barrier using a first sensor, the barrier position indicating a degree of opening of the barrier; detecting when the barrier is in a closed position using a second sensor; and calibrating the first sensor to indicate a closed position each time the barrier is detected to be in the closed position.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: November 12, 2019
    Assignee: ASSA ABLOY AB
    Inventor: Tomas Jonsson
  • Patent number: 10474202
    Abstract: An electronic device includes: a first housing and a second housing provided to be capable of being displaced between a first state in which the first major surfaces thereof face each other and a second state in which the second major surfaces thereof face each other; a magnetic detection part provided in the first housing; a magnet provided in the second housing; and a control part configured to determine the first state and the second state based on an output of the magnetic detection part. The magnet is disposed such that a magnetization direction thereof is orthogonal to the first major surface and the second major surface of the second housing, and the magnetic detection part includes a first magnetic sensor and a second magnetic sensor arranged along a direction normal to the first major surface and the second major surface of the first housing.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: November 12, 2019
    Assignee: Rohm Co., Ltd.
    Inventor: Tetsuya Kitade
  • Patent number: 10466075
    Abstract: There is provided a magnetic detection apparatus in which based on a second comparison signal or a first comparison signal, a second analog/digital conversion circuit or a first analog/digital conversion circuit converts a second amplification signal or a first amplification signal into a digital value at a time when the peak value of the first amplification signal or the second amplification signal is detected or at a time when the bottom value of the first amplification signal or the second amplification signal is detected, as the case may be, and that can implement at least one of actions in which based on comparison between the digital value converted and a predetermined reference value, a second threshold value adjusting apparatus or a first threshold value adjusting apparatus adjusts a second threshold value or a first threshold value, as the case may be.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: November 5, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshinori Tatenuma, Masahiro Yokotani, Akira Koshimizu
  • Patent number: 10459040
    Abstract: An integrated fluxgate magnetic gradient sensor includes a common mode sensitive fluxgate magnetometer and a differential mode sensitive fluxgate magnetometer. The common mode sensitive fluxgate magnetometer includes a first core adjacent to a second core. The first and second cores are wrapped by a first excitation wire coil configured to receive an excitation current that affects a differential mode magnetic field. The differential mode sensitive fluxgate magnetometer includes a third core adjacent to the first core and a fourth core adjacent to the second core. The third and fourth cores are wrapped by a second excitation wire coil configured to receive an excitation current that affects a common mode magnetic field.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: October 29, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Martijn Fridus Snoeij, Viola Schäffer, Gebhard Haug
  • Patent number: 10458813
    Abstract: A magnetic field sensor is disclosed that includes at least one magneto-resistive spin-valve sensor element configured to sense a first magnetic field component H1, and at least one AMR sensor element configured to sense a second magnetic field component H2 which is perpendicular to the first magnetic field component H1. In one example the at least one magneto-resistive spin-valve sensor element is a tunnel magneto-resistive (TMR) or giant magneto-resistive (GMR) sensor, and in one example the AMR sensor element includes an antiferromagnetic layer coupled to a ferromagnetic layer generating a bias magnetization for the AMR sensor element.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: October 29, 2019
    Assignee: Infineon Technologies AG
    Inventor: Wolfgang Raberg
  • Patent number: 10436808
    Abstract: A laboratory sample distribution system is presented. The system comprises a number of sample container carriers, a transport plane, a number of electro-magnetic actuators, a number of position sensors and a position determination unit. The position sensors and the position determination unit enable improved sample container carrier position detection on the transport plane. A laboratory automation system comprising such a laboratory sample distribution system is also presented.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: October 8, 2019
    Assignee: Roche Diagnostics Operations, Inc.
    Inventor: Michal Malinowski
  • Patent number: 10431360
    Abstract: A consumer electronic device is disclosed that includes at least the following elements: a housing and magnets carried by the housing that form magnetic circuits with corresponding magnets carried by an accessory device. The magnetic circuits taken together (i) magnetically attach the housing to the accessory device, and (ii) have a net zero, or near net zero, torque.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: October 1, 2019
    Assignee: Apple Inc.
    Inventor: David F. Mallard
  • Patent number: 10422662
    Abstract: A magnetic field sensor is disclosed that includes at least one magneto-resistive spin-valve sensor element configured to sense a first magnetic field component H1, and at least one AMR sensor element configured to sense a second magnetic field component H2 which is perpendicular to the first magnetic field component H1. In one example the at least one magneto-resistive spin-valve sensor element is a tunnel magneto-resistive (TMR) or giant magneto-resistive (GMR) sensor, and in one example the AMR sensor element includes an antiferromagnetic layer coupled to a ferromagnetic layer generating a bias magnetization for the AMR sensor element.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: September 24, 2019
    Assignee: Infineon Technologies AG
    Inventor: Wolfgang Raberg
  • Patent number: 10424747
    Abstract: Provided are a substrate for an OED, a method of manufacturing the same, and a use thereof. The substrate includes a flexible base film and an inorganic material layer, and the inorganic material layer includes a multilayer structure of at least two thin layers. Such an inorganic material layer may have an excellent physical property, for example, a barrier property, by inhibiting crystallinity. In addition, by employing the multilayer structure, an inorganic material layer having a physical property which is difficult to be realized by a conventional inorganic material layer, for example, a high refractive index, in addition to the barrier property may be formed.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: September 24, 2019
    Assignee: LG CHEM, LTD.
    Inventor: Jung Hyoung Lee
  • Patent number: 10419622
    Abstract: An image reading device includes a rotating magnet unit (42) that rotates in interlock with opening and closing of a document pressing unit (2) and has a magnetic pole of an N pole and a magnetic pole of a S pole disposed at different phase positions in a rotation direction, a magnetic sensor (43) having a magnetic detection part (43a) that is installed in a reading unit or a movable body moving in a sub-scanning direction in interlock with the reading unit, and faces a peripheral surface of the rotating magnet unit (42) only when the reading unit is in a predetermined home position, and a determination unit that determines an opening and closing state of the document pressing unit (2) and determines whether the reading unit is in the predetermined home position on the basis of an output signal from the magnetic sensor (43).
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: September 17, 2019
    Assignee: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventor: Shinji Akamatsu
  • Patent number: 10408893
    Abstract: A magnetic sensor includes first magnetoresistive elements and second magnetoresistive elements. The rates of change of resistance of the first magnetoresistive elements are higher than the rates of change of resistance of the second magnetoresistive elements. The second magnetoresistive elements each include a plurality of unit patterns that are arranged along an imaginary circle or an imaginary polygon in plan view and the unit patterns each include a plurality of bent portions and a folded back shape. The plurality of unit patterns are connected to each other in a direction that encloses a region around the center of the imaginary circle or imaginary polygon.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: September 10, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Daisuke Mori
  • Patent number: 10386427
    Abstract: A magnetic field sensor for sensing a direction of a magnetic field in an x-y plane, can include a first plurality of magnetic field sensing elements operable to generate a first plurality of magnetic field signals and a second plurality of magnetic field sensing elements operable to generate a second plurality of magnetic field signals. The magnetic field sensor can also include at least one sequence switches circuit operable to select ones of the first plurality of magnetic field signals and to select ones of the second plurality of magnetic field signals. The magnetic field sensor can also include a processing circuit operable to combine the selected ones of the first plurality of magnetic field signals and the selected ones of the second plurality of magnetic field signals to generate at least one sequential signal and to process the at least one sequential signal to generate an x-y angle signal indicative of a direction of the magnetic field in the x-y direction. An associated method is described.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: August 20, 2019
    Assignee: Allegro MicroSystems, LLC
    Inventors: Andreas P. Friedrich, Andrea Foletto, Nicolas Yoakim
  • Patent number: 10371762
    Abstract: The inventive concepts presented herein relate to methods of identifying molecules identification of molecules using apparatuses including: electromagnetic write-head(s); magneto-resistive read sensor(s), and processor(s). An exemplary method includes magnetically exciting a molecule to be identified using an alternating magnetic field generated by an electromagnetic write-head, measuring a resonant response of the molecule to be identified using a magneto-resistive read sensor; and comparing, using a processor, the resonant response of the molecule to be identified with a table of known resonant responses to identify a chemical composition of the molecule to be identified. The molecule to be identified may optionally be disposed on a biosample substrate which comprises, or is coupled to, a plurality of servo-alignment marks; and the plurality of servo-alignment marks are configured to facilitate alignment of the electromagnetic write-head with the biosample tracks of the biosample substrate.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: August 6, 2019
    Assignee: International Business Machines Corporation
    Inventors: Allen K. Bates, Anna W. Topol, Daniel J. Winarski
  • Patent number: 10365123
    Abstract: Some embodiments are directed to an anisotropic magneto-resistive (AMR) angle sensor. The sensor comprises a first Wheatstone bridge comprising a first serpentine resistor, a second serpentine resistor, a third serpentine resistor, and a fourth serpentine resistor. The sensor also comprises a second Wheatstone bridge comprising a fifth serpentine resistor, a sixth serpentine resistor, a seventh serpentine resistor, and an eighth serpentine resistor. The serpentine resistors comprise anisotropic magneto-resistive material that changes resistance in response to a change in an applied magnetic field. The sensor also includes a surrounding of anisotropic magneto-resistive material disposed in substantially a same plane as the serpentine resistors, enclosing the serpentine resistors, and electrically isolated from the serpentine resistors. The first Wheatstone bridge, the second Wheatstone bridge, and the surrounding of anisotropic magneto-resistive material are part of a sensor die.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: July 30, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Dok Won Lee, Erika Lynn Mazotti, William David French
  • Patent number: 10338158
    Abstract: A bias magnetic field sensor is disclosed. In an embodiment, a bias magnetic field sensor includes a magnetic field sensor package having a magnetic body attached to only a single side of the sensor package, wherein the magnetic body is configured to provide a magnetic field, and wherein the sensor package is configured to measure a modulation of the magnetic field by a generator object.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: July 2, 2019
    Assignee: INFINEON TECHNOLOGIES AG
    Inventors: Tobias Werth, Robert Hermann, Udo Ausserlechner, Helmut Koeck, Frank Heinrichs
  • Patent number: 10330496
    Abstract: A sensor arrangement is configured to detect rotational angles on a rotating component in a vehicle. The rotating component is coupled to at least one measurement transmitter which generates at least one piece of angle information in connection with at least one measurement sensor in order to determine the rotational angle of the rotating component. A first measurement transmitter and a first measurement sensor form a first angle sensor which generates first angle information that is dependent on the rotational movement of the rotating component, and a second measurement transmitter and a second measurement sensor form a second angle sensor which generates second angle information that is dependent on the rotational movement of the rotating component. A current rotational angle of the rotating component is ascertained from the first angle information and the second angle information. The first angle sensor and the second angle sensor are designed as inductive sensors.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: June 25, 2019
    Assignee: Robert Bosch GmbH
    Inventor: Volker Frese
  • Patent number: 10288700
    Abstract: A magnetic head for detecting a magnetic field on the surface of a magnetic pattern based on a magneto-resistance technology comprises a support (1) and a PCB (Printed Circuit Board) (5) arranged on the support (1), and further comprises horizontal excitation structures (20, 21) used for generating a magnetic field parallel to the surface of the magnetic head; and a magnetic field detection component (4) based on magneto-resistance (MR) elements (R1-R4), the magnetic field detection component is used for detecting the distribution of vertical components of a leakage magnetic field on the surface of a magnetic pattern. The magnetic head can effectively detect magnetic patterns made of soft magnetic materials or hard magnetic materials. The soft magnetic material is magnetized in an in-plane manner by means of the horizontal excitation structures (20, 21), so as to generate a specific leakage magnetic field on the surface of a magnetic pattern.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: May 14, 2019
    Assignee: Wuxi Ler Technology Co., Ltd.
    Inventor: Jianmin Bai
  • Patent number: 10267878
    Abstract: In a method and apparatus for recording a magnetic resonance dataset of at least one foreign body in a target region of a patient, a magnetic resonance sequence having an ultra-short echo time, which is less than 500 ?s is used for recording the magnetic resonance data.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: April 23, 2019
    Assignees: Siemens Aktiengesellschaft, The John Hopkins University
    Inventors: Jan Fritz, David Grodzki, Heiko Meyer, Mathias Nittka
  • Patent number: 10254135
    Abstract: A correction apparatus for an angle sensor includes a correction information generator for generating correction information, and a correction processing unit for performing correction processing in the course of generation of a detected angle value by an angle detector. Details of the correction processing are determined on the basis of the correction information. The correction information generator includes an error estimate generation unit and a correction information determination unit. The error estimate generation unit generates, on the basis of a first signal and a second signal, an error estimate containing a variable component that varies depending on an ideal angle estimate. The correction information determination unit determines the correction information on the basis of the error estimate.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: April 9, 2019
    Assignee: TDK CORPORATION
    Inventors: Shinichirou Mochizuki, Hiraku Hirabayashi, Hiroshi Naganuma, Tsuyoshi Umehara, Yuichiro Yamaji
  • Patent number: 10254182
    Abstract: The present invention relates to an arrangement for measuring a force and/or moment on a hollow-cylindrical machine element, using the inverse magnetostrictive effect. The machine element extends in an axis and has a sensor region of hollow cylinder-type basic shape. This sensor region has a permanent magnetization or the arrangement comprises magnetizing elements for magnetizing the sensor region. The arrangement further comprises at least one magnetic field sensor which is designed to measure at least one component of a magnetic field brought about by the magnetization of the sensor region and by the magnetic field caused by the force to be measured and/or by the moment to be measured. According to the invention, the machine element, in the hollow space defined by the hollow cylinder-type basic shape, has a wall-type longitudinal structure.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: April 9, 2019
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventor: Jan Matysik