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Magnetic sensing user interface device, methods, and apparatus

  • US 10,466,803 B1
  • Filed: 06/05/2017
  • Issued: 11/05/2019
  • Est. Priority Date: 08/20/2011
  • Status: Active Grant
First Claim
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1. A user interface device, comprising:

  • an actuator element having a plurality of magnets;

    a plurality of three-axis magnetic sensor elements, each associated with a corresponding magnet amongst the plurality of magnets, to sense the magnetic field components associated with displacements of the corresponding magnets in three orthogonal axes and provide magnetic sensor output data corresponding to the sensed magnetic field components;

    a processing element communicatively coupled to the three-axis magnetic sensor elements to determine, based at least on the magnetic sensor output data, an estimated position or deformation of the actuator element from a released state; and

    a memory to store a predefined magnetic field model, wherein the determined estimated position or deformation of the actuator element from the released state is further based on the predefined magnetic field model.

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