The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jun. 05, 2007

Filed:

Aug. 16, 2005
Applicants:

Woong Kwon, Seongnam-Si, KR;

Kyung Shik Roh, Seongnam-Si, KR;

Woo Sup Han, Yongin-Si, KR;

Young BO Shim, Seoul, KR;

Inventors:

Woong Kwon, Seongnam-Si, KR;

Kyung Shik Roh, Seongnam-Si, KR;

Woo Sup Han, Yongin-Si, KR;

Young Bo Shim, Seoul, KR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C 17/38 (2006.01); G01C 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

Method and system to detect orientations of a moving object using one or more magnetic compasses. The method and system minimize magnetic field interference in a space where an object is moving such that the orientations of the moving object can be precisely detected. The method includes setting one or more earth magnetic field (EMF) conditions without a magnetic field interference component to determine whether the one or more magnetic compasses are located in an EMF area, calculating a magnitude of a magnetic field applied to the moving object using the one or more magnetic field compasses, and detecting an orientation of the moving object by determining whether the calculated magnitude of the magnetic field satisfies the one or more EMF conditions.


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