Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system
Reexamination Certificate
2005-10-18
2005-10-18
Nghiem, Michael (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Mechanical measurement system
C033S356000
Reexamination Certificate
active
06957156
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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patent: 6701631 (2004-03-01), Monteiro et al.
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Choi Won Tae
Jeong Ha Woong
Jo Han Chul
Kang Jin Yong
Kim Chang Hyun
Lowe Hauptman & Berner LLP
Nghiem Michael
Samsung Electro-Mechanics Co. Ltd.
Sun Xiuqin
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