Patents by Inventor Mattias F. Karlsson

Mattias F. Karlsson 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).

  • Method of estimating target signals by a dynamical fluxgate sensor
    Patent number: 7009392
    Abstract: A method of estimating target signals (dc or low frequency signals) by a dynamical fluxgate sensor and a low-power fluxgate magnetometer operating according to the method. The sensor is pre-biased with a periodic bias signal in the form of a superposition of a square wave and a triangular wave. The change in residence time statistics in the stable state of the sensor is analyzed for estimating the target signals.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: March 7, 2006
    Assignees: Totalforsvarets Forskningsinstitut, The United States of America as represented by the Secretary of the Navy
    Inventors: John W. C. Robinson, Mattias F. Karlsson, Peter Sigray, Adi R. Bulsara, Luca Gammaitoni
  • Method of estimating target signals by a dynamical fluxgate sensor
    Publication number: 20040183531
    Abstract: A method of estimating target signals (dc or low frequency signals) by a dynamical fluxgate sensor and a low-power fluxgate magnetometer operating according to the method. The sensor is pre-biased with a periodic bias signal in the form of a superposition of a square wave and a triangular wave. The change in residence time statistics in the stable state of the sensor is analyzed for estimating the target signals.
    Type: Application
    Filed: January 8, 2004
    Publication date: September 23, 2004
    Inventors: John W.C. Robinson, Mattias F. Karlsson, Peter Sigray, Adi R. Bulsara, Luca Gammaitoni