Apparatus and method of calibrating azimuth of mobile device
AssigneeSamsung Electronics Co., Ltd.
InventorsWoong Kwon, Kyung-shik Roh, Sang-on Choi, Woo-sup Han, Young-bo Shim
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Abstract
Provided are an apparatus and method of calibrating azimuth of a mobile device. The apparatus includes: a magnetic field measuring unit having a plurality of magnetic sensors aligned in a constant angle interval on the mobile device and measuring magnetic field data indicating magnitudes of a magnetic field in different directions; and a controller generating a calibration table indicating a correspondence between an actual magnetic field trajectory formed by the magnetic field data and a theoretical magnetic field trajectory and calibrating azimuth of the mobile device using the calibration table.
Claims13
An apparatus for calibrating azimuth of a mobile device, comprising:
- a magnetic field measuring unit having a plurality of magnetic sensors aligned in a constant angle interval on the mobile device, and measuring magnetic field data indicating magnitudes of a magnetic field in different directions;
- and
- a controller generating a calibration parameter indicating a correspondence between an actual magnetic field trajectory formed by the magnetic field data and a theoretical magnetic field trajectory and calibrating azimuth of the mobile device using the calibration parameter, wherein the calibration parameter includes a magnetic field magnitude component and an offset component.
A method of calibrating azimuth of a mobile device, comprising:
- measuring magnetic field data indicating magnitudes of a magnetic field in different directions using a plurality of magnetic sensors aligned in a constant angle interval on the mobile device and forming an actual magnetic field trajectory using the magnetic field data;
- generating a calibration parameter indicating a correspondence between the actual magnetic field trajectory formed by the magnetic field data and a theoretical magnetic field trajectory, wherein the calibration parameter includes a magnetic field magnitude component and an offset component;
- and
- calibrating azimuth of the mobile device using the calibration parameter.
A computer readable medium having recorded thereon a computer readable program for performing a method of calibrating azimuth of a mobile device, comprising:
- measuring magnetic field data indicating magnitudes of a magnetic field in different directions using a plurality of magnetic sensors aligned in a constant angle interval on the mobile device and forming an actual magnetic field trajectory using the magnetic field data;
- generating a calibration parameter between the actual magnetic field trajectory formed by the magnetic field data and a theoretical magnetic field trajectory, wherein the calibration parameter includes a magnetic field magnitude component and an offset component;
- and
- calibrating azimuth of the mobile device using the calibration parameter.
Dependencies are inferred from the claim text.