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:
Oct. 18, 2005

Filed:

Feb. 04, 2004
Applicants:

Han Chul JO, Kyungki-do, KR;

Won Tae Choi, Kyungki-do, KR;

Chang Hyun Kim, Kyungki-do, KR;

Jin Yong Kang, Kyungki-do, KR;

OH JO Kwon, Kyungki-do, KR;

Ha Woong Jeong, Inchun, KR;

Inventors:

Han Chul Jo, Kyungki-do, KR;

Won Tae Choi, Kyungki-do, KR;

Chang Hyun Kim, Kyungki-do, KR;

Jin Yong Kang, Kyungki-do, KR;

Oh Jo Kwon, Kyungki-do, KR;

Ha Woong Jeong, Inchun, KR;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F017/00 ;
U.S. Cl.
CPC ...
Abstract

A method of finding a dip angle in a tilt-compensated electronic compass includes the steps of a) setting a predetermined azimuth angle indicative of a horizontal status of a geomagnetic sensor to a reference azimuth angle; b) if the compass is slightly tilted, stepwise-increasing a dip angle within a predetermined dip angle search range, and calculating azimuth angles associated with individual dip angles; c) comparing the calculated azimuth angles with the reference azimuth angle, and finding one azimuth angle, which is closest to the reference azimuth angle, among the calculated azimuth angles; and d) setting the dip angle applied to the closest azimuth angle to a specific dip angle associated with a corresponding azimuth angle, such that a more accurate azimuth angle can be detected by the on the basis of the calculated dip angle.


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