Geometrical instruments – Indicator of direction of force traversing natural media – Magnetic field responsive
Reexamination Certificate
2004-11-15
2008-09-09
Bennett, G. Bradley (Department: 2841)
Geometrical instruments
Indicator of direction of force traversing natural media
Magnetic field responsive
C702S092000
Reexamination Certificate
active
07421792
ABSTRACT:
Provided are an apparatus and method of calibrating azimuth of a mobile device. The apparatus includes: a motor; a magnetic field measuring unit disposed in the mobile device and measuring magnetic field data indicating magnitudes of a magnetic field in different directions while being rotated by the motor; and a controller driving the motor, 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.
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Choi Sang-on
Han Woo-sup
Kwon Woong
Roh Kyung-shik
Shim Young-bo
Bennett G. Bradley
Cohen Johnson Amy
Samsung Electronics Co,. Ltd.
Sughrue & Mion, PLLC
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