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Hybrid motion tracker

  • US 5,831,260 A
  • Filed: 09/10/1996
  • Issued: 11/03/1998
  • Est. Priority Date: 09/10/1996
  • Status: Expired due to Term
First Claim
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1. A hybrid motion tracker system for tracking motions of a person, comprising:

  • a) a magnetic sensor mounted on a person;

    b) a fixed source of magnetic field;

    c) an optical source of light mounted on the person adjacent said magnetic sensor;

    d) an optical sensor located adjacent said fixed source of magnetic field;

    e) a control means for controlling operation of said fixed source of magnetic field and optical source, said control means activating said fixed source of magnetic field and said optical source, said magnetic sensor sensing said magnetic field and sending first signals to said control means indicative of position and orientation of a portion of the person to which said magnetic sensor is affixed, said control means concurrently activating said optical source of light, said optical sensor sensing light from said source of light and, responsive thereto, sending second signals to said control means indicative of, at least, position of said portion of said person.

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