Patents by Inventor Hans R. Schild

Hans R. Schild 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).

  • Gain factor and position determination system
    Patent number: 6990427
    Abstract: A system for determining the position, orientation and system gain factor of a probe includes a plurality of magnetic field sources and at least one magnetic field sensor, such that a combination of a magnetic field sensor and a magnetic field source generates a unique measured magnetic field value. The system includes a probe whose gain, position, and orientation affect these unique measured magnetic field values. A processor is configured to receive and iteratively process these unique measured magnetic field values to determine a system gain factor indicative of the gain of the probe and a plurality of location factors indicative of the position and orientation of the probe. The number of unique measured magnetic field values generated must be at least equal to the sum of the number of gain and location factors calculated.
    Type: Grant
    Filed: July 22, 2003
    Date of Patent: January 24, 2006
    Assignee: Northern Digital Inc.
    Inventors: Stefan R. Kirsch, Hans R. Schild, Christian J. Schilling
  • Gain factor and position determination system
    Patent number: 6625563
    Abstract: A system for determining the position, orientation and system gain factor of a probe includes a plurality of magnetic field sources and at least one magnetic field sensor, such that a combination of a magnetic field sensor and a magnetic field source generates a unique measured magnetic field value. The system includes a probe whose gain, position, and orientation affect these unique measured magnetic field values. A processor is configured to receive and iteratively process these unique measured magnetic field values to determine a system gain factor and a plurality of location factors. The system gain factor is indicative of the gain of the probe, and the plurality of location factors are indicative of the position and orientation of the probe. The number of unique measured magnetic field values generated must be at least equal to the sum of the number of gain and location factors calculated.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: September 23, 2003
    Assignee: Northern Digital Inc.
    Inventors: Stefan R. Kirsch, Hans R. Schild, Christian J. Schilling
  • Gain factor and position determination system
    Publication number: 20020198676
    Abstract: A system for determining the position, orientation and system gain factor of a probe includes a plurality of magnetic field sources and at least one magnetic field sensor, such that a combination of a magnetic field sensor and a magnetic field source generates a unique measured magnetic field value. The system includes a probe whose gain, position, and orientation affect these unique measured magnetic field values. A processor is configured to receive and iteratively process these unique measured magnetic field values to determine a system gain factor indicative of the gain of the probe and a plurality of location factors indicative of the position and orientation of the probe. The number of unique measured magnetic field values generated must be at least equal to the sum of the number of gain and location factors calculated.
    Type: Application
    Filed: June 26, 2001
    Publication date: December 26, 2002
    Inventors: Stefan R. Kirsch, Hans R. Schild, Christian Schilling