Mobile terminals, methods, and program products for generating a magnetic heading based on position
AssigneeSony Ericsson Mobile Communications AB
InventorsMagnus Jendbro, Gunnar Klinghult
Life of this patent
Estimating the term…
Abstract
Mobile terminals, methods, and program products for generating a magnetic heading. A geographic position of the mobile terminal is determined. A magnetic field at the mobile terminal is sensed. A magnetic inclination and/or a magnetic declination of the magnetic field is determined based on the determined geographic position. A magnetic heading is determined for the mobile terminal based on the sensed magnetic field and based on the determined magnetic inclination and/or magnetic declination.
Claims22
A method for generating a magnetic heading for a mobile terminal, comprising:
- determining a geographic position of the mobile terminal;
- sensing a magnetic field at the mobile terminal;
- determining a magnetic inclination and/or a magnetic declination of the magnetic field based on the determined geographic position;
- and
- determining a magnetic heading for the mobile terminal based on the sensed magnetic field while compensating for orientation of the mobile terminal relative to Earth based on the determined magnetic inclination and/or magnetic declination without use of information from sensors that sense orientation of the mobile terminal relative to Earth.
A mobile terminal comprising:
- a position determination unit that is configured to determine a geographic position of the mobile terminal;
- a magnetic field sensor that is configured to sense a magnetic field at the mobile terminal;
- and
- a processor unit that is configured to determine a magnetic inclination andlor a magnetic declination of the magnetic field based on the determined geographic position, and that is configured to determine a magnetic heading for the mobile terminal based on the sensed magnetic field while compensating for orientation of the mobile terminal relative to Earth based on the determined magnetic inclination and/or magnetic declination without use of information from sensors that sense orientation of the mobile terminal relative to Earth.
A program product for generating a magnetic heading for a mobile terminal, the program product comprising code embodied in a processor-readable medium, the code comprising:
- code configured to receive a sensed magnetic field;
- code configured to determine a magnetic inclination and/or a magnetic declination of the magnetic field based on a geographic position of the mobile terminal;
- and
- code configured to determine a magnetic heading for the mobile terminal based on the sensed magnetic field while compensating for orientation of the mobile terminal relative to Earth based on the determined magnetic inclination and/or the magnetic declination without use of information from sensors that sense orientation of the mobile terminal relative to Earth.
Dependencies are inferred from the claim text.