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Restoring and Storing Magnetometer Calibration Data

  • US 20100312513A1
  • Filed: 06/05/2009
  • Published: 12/09/2010
  • Est. Priority Date: 06/05/2009
  • Status: Active Grant
First Claim
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1. A computer-implemented method, comprising:

  • receiving a reading from a magnetometer of a mobile device;

    comparing the reading to historical data;

    determining a confidence of a match between the reading and historical data, where the confidence is determined at least in part on historical data associated with Earth'"'"'s magnetic field; and

    if the confidence of the match exceeds a threshold confidence level, calibrating the magnetometer with historical calibration data.

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