Patents by Inventor Simon Tima

Simon Tima has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Angle sensing using differential magnetic measurement and a back bias magnet
    Patent number: 10598515
    Abstract: A magnetic field sensor includes a back bias magnet to generate a DC magnetic field. First and second magnetic field sensing elements of the magnetic field sensor are disposed proximate to at least one ferromagnetic surface of a ferromagnetic target object. The first and second magnetic field sensing elements generate first and second electronic signals, respectively, in response to first and second sensed magnetic fields corresponding to the DC magnetic field but influenced by the at least one ferromagnetic surface. The magnetic field sensor generates a difference signal that is a difference of amplitudes of the first and second electronic signals. The difference signal is indicative of a rotation measurement of an absolute relative rotation of the ferromagnetic target object and the magnetic field sensor about a rotation axis.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: March 24, 2020
    Assignee: Allegro MicroSystems, LLC
    Inventors: Simon Tima, Yannick Vuillermet, Andreas P. Friedrich, Thomas Kerdraon
  • Angle Sensing Using Differential Magnetic Measurement And A Back Bias Magnet
    Publication number: 20180094951
    Abstract: A magnetic field sensor includes a back bias magnet to generate a DC magnetic field. First and second magnetic field sensing elements of the magnetic field sensor are disposed proximate to at least one ferromagnetic surface of a ferromagnetic target object. The first and second magnetic field sensing elements generate first and second electronic signals, respectively, in response to first and second sensed magnetic fields corresponding to the DC magnetic field but influenced by the at least one ferromagnetic surface. The magnetic field sensor generates a difference signal that is a difference of amplitudes of the first and second electronic signals. The difference signal is indicative of a rotation measurement of an absolute relative rotation of the ferromagnetic target object and the magnetic field sensor about a rotation axis.
    Type: Application
    Filed: December 7, 2017
    Publication date: April 5, 2018
    Applicant: Allegro MicroSystems, LLC
    Inventors: Simon Tima, Yannick Vuillermet, Andreas P. Friedrich, Thomas Kerdraon
  • Angle sensing using differential magnetic measurement and a back bias magnet
    Patent number: 9869566
    Abstract: A magnetic field sensor includes a back bias magnet to generate a DC magnetic field. First and second magnetic field sensing elements of the magnetic field sensor are disposed proximate to at least one ferromagnetic surface of a ferromagnetic target object. The first and second magnetic field sensing elements generate first and second electronic signals, respectively, in response to first and second sensed magnetic fields corresponding to the DC magnetic field but influenced by the at least one ferromagnetic surface. The magnetic field sensor generates a difference signal that is a difference of amplitudes of the first and second electronic signals. The difference signal is indicative of a rotation measurement of an absolute relative rotation of the ferromagnetic target object and the magnetic field sensor about a rotation axis.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: January 16, 2018
    Assignee: Allegro MicroSystems, LLC
    Inventors: Simon Tima, Yannick Vuillermet, Andreas P. Friedrich, Thomas Kerdraon
  • ANGLE SENSING USING DIFFERENTIAL MAGNETIC MEASUREMENT AND A BACK BIAS MAGNET
    Publication number: 20170234702
    Abstract: A magnetic field sensor includes a back bias magnet to generate a DC magnetic field. First and second magnetic field sensing elements of the magnetic field sensor are disposed proximate to at least one ferromagnetic surface of a ferromagnetic target object. The first and second magnetic field sensing elements generate first and second electronic signals, respectively, in response to first and second sensed magnetic fields corresponding to the DC magnetic field but influenced by the at least one ferromagnetic surface. The magnetic field sensor generates a difference signal that is a difference of amplitudes of the first and second electronic signals. The difference signal is indicative of a rotation measurement of an absolute relative rotation of the ferromagnetic target object and the magnetic field sensor about a rotation axis.
    Type: Application
    Filed: February 12, 2016
    Publication date: August 17, 2017
    Applicant: Allegro Microsystems, LLC
    Inventors: Simon Tima, Yannick Vuillermet, Andreas P. Friedrich, Thomas Kerdraon