Patent 7600426 was granted and assigned to Suunto on October, 2009 by the United States Patent and Trademark Office.
The invention relates to a method and a mobile device. In accordance with the method—pressure data is measured, the pressure data is used as atmospheric-pressure data and/or for the definition of altitude, and the magnetic field of the Earth is measured by a magnetic sensor (22). In accordance with the invention consecutive measurements are performed using the magnetic sensor (22) and the consecutive measurement results are compared, and on the basis of the comparison the mobile device (20) is commanded to either atmospheric-pressure measurement or altitude measurement.