Patents Assigned to Melexis
  • Patent number: 11143527
    Abstract: A position sensor system comprising: a magnetic field generator movable relative to two sensor devices or vice versa. The system has at least one processor adapted with a special algorithm for determining a position of the magnetic field generator in a manner which is highly robust against a disturbance field. A method for determining the position of the magnetic field generator based on a set of equations, in particular a set of linear equations which allows to completely eliminate the external disturbance field.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: October 12, 2021
    Assignee: MELEXIS TECHNOLOGIES SA
    Inventor: Javier Bilbao De Mendizabal
  • Patent number: 11102031
    Abstract: The present invention relates to a receiver circuit for processing an incoming bit stream from a bus system. The circuit comprises an analog interface for converting the analog signal to a digital input data stream. The interface comprises an analog filter and a switch to process the analog signal before generating the digital input data stream using the filter if, and only if, a selection criterion controlling the switch is met. The circuit comprises a frame decoding unit for decoding a data frame encoded in the digital input data stream in accordance with a CAN protocol, and a frame processing unit that comprises a flexible data rate detector and a recessive bit counter for counting consecutive recessive bits after detecting the flexible data rate frame. The selection criterion is satisfied when the flexible data rate frame is detected and unsatisfied when the recessive bit counter reaches a predetermined number.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: August 24, 2021
    Assignee: MELEXIS TECHNOLOGIES NV
    Inventors: Martin Bölter, Thomas Freitag, Jörgen Sturm, Anton Babushkin
  • Patent number: 11098996
    Abstract: A position sensor system for measuring a position of a target movable outside a plane, the system comprising: a first magnetic sensor and a second magnetic sensor fixedly arranged in the plane and spaced apart by a distance; the first respectively second magnetic sensor adapted for measuring at least one first respectively second in-plane magnetic field component in the plane to obtain at least a first respectively second value; a controller connected to the sensors for obtaining the values, and adapted for determining the out-of-plane position as a function of the values and of the predefined distance. A method is provided for determining the position.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: August 24, 2021
    Assignee: MELEXIS TECHNOLOGIES SA
    Inventors: Lorenzo Lugani, Thibault Marche
  • Patent number: 11092461
    Abstract: A position sensor system for determining a position of a sensor device relative to a magnetic structure, the system comprising: said magnetic structure comprising a plurality of poles; said sensor device comprising a plurality of magnetic sensors; the magnetic structure being movable relative to the sensor device, or vice versa; wherein: a distance between centres of adjacent poles varies along the movement direction; the sensor device is adapted: for determining a first magnetic field component parallel to, and a second magnetic field component perpendicular to a movement direction, and for calculating a coarse signal based on these components; and for determining a first and second gradient of these signals along the movement direction, and for calculating a fine signal based on these gradients; and for determining said position based on the coarse signal and the fine signal.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: August 17, 2021
    Assignee: MELEXIS TECHNOLOGIES SA
    Inventor: Yves Bidaux
  • Patent number: 11085953
    Abstract: The present invention relates to a half-bridge signal processing circuit comprising a first and a second branch. The first branch comprises a first stimulus responsive sense element and a first current source arranged to provide a current to the first sense element. The second branch comprises a second stimulus responsive sense element and a second current source arranged to provide a current to said second sense element. The first and the second branch have a terminal in common. The first branch comprises a first node between said the current source and the first stimulus responsive sense element configured to generate a first signal related to a voltage over the first sense element. The second branch comprises a second node between the second current source and the second stimulus responsive sense element configured to generate a second signal related to a voltage over the second sense element.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: August 10, 2021
    Assignee: MELEXIS TECHNOLOGIES NV
    Inventors: Asparuh Ivanov Grigorov, Johan Vergauwen
  • Patent number: 11085976
    Abstract: A field-sensor device comprises first and second field sensors disposed in corresponding different first and second orientations, each responsive to an external field to produce corresponding first and second sensor signals. One of or both the first and second sensor signals are converted to equivalent comparable sensor signals in a common orientation and compared to determine a faulty field sensor. If a faulty field sensor is determined, a faulty sensor signal is produced or, if a faulty sensor is not determined, an output sensor signal responsive to the first, second or comparable sensor signals is produced. Evaluation of the direction of differences between the comparable sensor signals can determine which of the first and second field sensors is faulty.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: August 10, 2021
    Assignee: MELEXIS TECHNOLOGIES SA
    Inventors: Javier Bilbao De Mendizabal, Mathieu Poezart
  • Publication number: 20210239839
    Abstract: A depth mapping system includes a time of flight ranging system including structured and unstructured light sources, an optical sensor unit and a signal processing unit. The system time employs first and second time of flight ranging technique in respect of the optical sensor unit. The first and second time of flight techniques measure respective first and second distance ranges over a first and a second respective field of view. Measurement of the first and second distance ranges are respectively at a first angular resolution and a second angular resolution greater than the first angular resolution. The structured and unstructured light sources respectively operate in respect of the first and second time of flight techniques. First and second regions of the optical sensor unit respectively have the first and second fields of view associated therewith, and the structured source has a greater emission radiant intensity than the unstructured source.
    Type: Application
    Filed: January 29, 2021
    Publication date: August 5, 2021
    Applicant: Melexis Technologies NV
    Inventor: Volodymyr SELIUCHENKO
  • Publication number: 20210239810
    Abstract: An apparatus (100) comprises a light source that emits light modulated selectively at first and second modulation frequencies. A photonic mixer cell (102) generates and stores a plurality of electrical output signals respectively corresponding to phase offset values applied in accordance with an indirect time of flight technique and in respect of the selected modulation frequency. A signal processing circuit processes a first number of the electrical output signals at the first modulation frequency to calculate a first measurement phase angle (?1) from a calculated first measurement vector, and a second number of the electrical output signals at the second modulation frequency to calculate a second measurement phase angle (?2) from a second calculated measurement vector.
    Type: Application
    Filed: January 28, 2021
    Publication date: August 5, 2021
    Applicant: Melexis Technologies NV
    Inventor: Andreas OTT
  • Publication number: 20210231808
    Abstract: A depth mapping system comprises a time of flight ranging system (200) comprising structured and unstructured light sources (116, 118), an optical sensor unit (202) and a signal processing unit (206). The system time multiplexes use of first and second time of flight ranging technique in respect of the optical sensor unit (202). The first and second time of flight techniques measure respective first and second distance ranges over a first and a second respective field of view. Measurement of the first and second distance ranges are respectively at a first angular resolution and a second angular resolution greater than the first angular resolution. The structured and unstructured light sources (116, 118) respectively operate in respect of the first and second time of flight techniques. First and second regions of the optical sensor unit (202) respectively have the first and second fields of view associated therewith.
    Type: Application
    Filed: January 29, 2020
    Publication date: July 29, 2021
    Applicant: Melexis Technologies NV
    Inventor: Volodymyr SELIUCHENKO
  • Patent number: 11067413
    Abstract: A rotation angle detector includes a magnet arranged to rotate, and a magnetic detection circuit provided with a first pair of magnetic detection elements arranged to be in combination sensitive to a first magnetic field in circumferential direction to the first surface and to a second magnetic field in normal direction to the first surface and arranged away from the rotation axis, and configured to detect magnetic flux of the magnet. A second pair of magnetic detection elements are arranged to be in combination sensitive to the first magnetic field in circumferential direction to the first surface and to the second magnetic field in normal direction to the first surface. A signal processing unit is configured to output a signal representative of a rotation angle of the magnet based on outputs of the first and second pair of magnetic detection elements.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: July 20, 2021
    Assignee: MELEXIS TECHNOLOGIES SA
    Inventor: Takumi Yoshiya
  • Patent number: 11067645
    Abstract: A sensor comprises a housing; and a lead frame comprising at least three elongated leads having an exterior portion extending from the housing; and a magnetic sensor circuit disposed in the housing, and connected to the lead frame. The housing comprises two recesses arranged on two opposite sides of the housing for allowing the sensor to be mounted to a support. The lead frame may further comprise a plurality of tabs disposed between the elongated leads, for use as test pins. A component assembly comprising said sensor mounted on a support between deformable protrusions. A method of making said component assembly, comprising the step of positioning said component on the support between said protrusions, and deforming said protrusions such that they are at least partially disposed within the recesses.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: July 20, 2021
    Assignee: MELEXIS TECHNOLOGIES SA
    Inventors: Jian Chen, Orlin Gueorguiev Saradjov
  • Patent number: 11067643
    Abstract: A multi-element sensor for measuring a magnetic field. The multi-element sensor comprises a magnetic sensing element, and an electronic circuit. The magnetic sensing element is mounted on the electronic circuit and comprises a fractured tether. The magnetic sensing element is electrically connected with the electronic circuit. The electronic circuit is produced in a first technology and/or first material and the magnetic sensing element is produced in a second technology and/or second material different from the first technology/material.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: July 20, 2021
    Assignees: MELEXIS TECHNOLOGIES NV, X-CELEPRINT LIMITED
    Inventors: Christian Schott, Matthew Meitl, Christopher Bower
  • Patent number: 11049784
    Abstract: A semiconductor device comprising a first and second doped semiconductor layer wherein the first layer is a monosilicon layer and the second layer is a polysilicon layer, an oxide layer covering the first and second layer, and an interconnect which electrically connects the first and second layer comprises a metal alloy which has a first part in contact with the first layer and a second part in contact with the second layer, wherein a part of the metal alloy between the first and the second part crosses over a sidewall of the second layer; at least one electronic component is formed in the first and/or second layer; the semiconductor device moreover comprises a stoichiometric passivation layer which covers the first and second layer and the oxide layer.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: June 29, 2021
    Assignee: MELEXIS TECHNOLOGIES NV
    Inventor: Appolonius Jacobus Van Der Wiel
  • Patent number: 11047926
    Abstract: An apparatus and a method for redundant measurements of a magnetic field originating from or influenced by a moveable object is described. The apparatus comprising at least one first magnetic field sensitive element measuring at least one magnetic field property of the magnetic field, wherein the at least one first magnetic field sensitive element is implemented on a first area of a semiconductor substrate, at least one second magnetic field sensitive element measuring at least one magnetic field property of the magnetic field, wherein the at least one second magnetic field sensitive element is implemented on a second area of said semiconductor substrate, and wherein the first and second areas are isolated from one another.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: June 29, 2021
    Assignee: Melexis Technologies SA
    Inventors: Jan-Willem Burssens, Vincent Hiligsmann, Lucian Barbut, Samuel Huber Lindenberger, Christian Schott
  • Patent number: 11047883
    Abstract: A current sensor is disclosed. The current sensor is substantially immune to stray fields due to the orientation of at least two magnetic field sensors and their respective axes of maximum sensitivity, as well as a total current sensor output that is a weighted difference of the individual magnetic field sensor outputs. The specific orientation of the magnetic field sensors allows for the current sensor to be smaller than known sensors of similar sensitivity.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: June 29, 2021
    Assignee: MELEXIS TECHNOLOGIES SA
    Inventor: Javier Bilbao de Mendizabal
  • Patent number: 11043629
    Abstract: A semiconductor device includes an electronic circuit, an interconnection contact such as a solder ball, and a plate configured to concentrate magnetic flux to a predetermined area. The plate is electrically conductive, and it is electrically connected to the electronic circuit.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: June 22, 2021
    Assignee: MELEXIS TECHNOLOGIES NV
    Inventors: Jan-Willem Burssens, Appolonius Van Der Wiel
  • Patent number: 11035887
    Abstract: A current sensor device for measuring a current of at least 30 Amps, comprising: a leadframe with a electrical conductor having a centerline; a substrate mounted to the electrical conductor and comprising a first and a second magnetic sensor configured for providing a first and second value; and a processing circuit for determining the current based on a difference or weighted difference between the first and second value. The first and second magnetic sensor are arranged asymmetrically with respect to the centerline.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: June 15, 2021
    Assignee: MELEXIS TECHNOLOGIES SA
    Inventors: Javier Bilbao De Mendizabal, Simon Houis
  • Publication number: 20210173088
    Abstract: A phase angle error calculation apparatus (100) comprising a light source (102) that emits light according to an indirect time of flight (iToF) measurement technique. A photonic mixer cell (104) generates and stores a plurality of electrical output signals corresponding to a plurality of predetermined phase offset values. A signal processing circuit processes the electrical output signals according to the iToF measurement technique in order to calculate a reference vector and a reference phase angle therefrom. The output signals correspond to measurement at a first level of precision. The circuit processes a subset of output signals according to the iToF measurement technique and calculates a measurement vector and a measurement phase angle therefrom. The subset of the output signals corresponds to measurement at a second level of precision lower than the first level of precision. The circuit calculates a phase angle correction value using the reference phase angle and the measurement phase angle.
    Type: Application
    Filed: December 10, 2020
    Publication date: June 10, 2021
    Applicant: Melexis Technologies NV
    Inventors: Volodymyr SELIUCHENKO, Andreas OTT, Kyle LEGG
  • Publication number: 20210173087
    Abstract: A method for multipath error compensation comprises an unstructured light source (142) illuminating a scene during a plurality of consecutive time frames. A structured light source (144) illuminates the scene concurrently, the illumination by the structured source (144) occurring during predetermined frames of the plurality of consecutive time frames. An array of photodetectors (102) each generate a set of signals in response to irradiation with light reflected from the scene according to an indirect time of flight calculation technique to yield a plurality of sets of signals. An error estimate is derived (130) from the plurality of sets of signals generated during a selected time frame of the plurality of consecutive time frames when structured illumination takes place and another time frame temporally about the selected time frame when both structured and unstructured illumination takes place. The error estimate is applied in a range calculation with respect to the scene.
    Type: Application
    Filed: December 9, 2020
    Publication date: June 10, 2021
    Applicant: Melexis Technologies NV
    Inventor: Volodymyr SELIUCHENKO
  • Publication number: 20210173054
    Abstract: An optical range calculation apparatus (100) comprises a light source configured to emit light in accordance with an indirect time of flight measurement technique. A photonic mixer cell (102) is configured to generate and store a plurality of electrical output signals respectively corresponding to a plurality of predetermined phase offset values applied (112) in accordance with the indirect time of flight measurement technique. A signal processing circuit (110, 124) is configured to process the plurality of electrical output signals in accordance with the indirect time of flight measurement technique in order to calculate a measurement vector and a measured phase angle from the measurement vector.
    Type: Application
    Filed: December 2, 2020
    Publication date: June 10, 2021
    Applicant: Melexis Technologies NV
    Inventor: Andreas OTT