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:
Aug. 25, 2020

Filed:

Dec. 02, 2015
Applicant:

Rohm Co., Ltd., Kyoto, JP;

Inventors:

Tadashi Kobayashi, Kyoto, JP;

Masafumi Seike, Kyoto, JP;

Hideki Nishiyama, Kyoto, JP;

Assignee:

Rohm Co., Ltd., Kyoto, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C 17/32 (2006.01); G01R 33/02 (2006.01); G01C 17/38 (2006.01); G01R 33/07 (2006.01); G01R 33/09 (2006.01);
U.S. Cl.
CPC ...
G01C 17/32 (2013.01); G01C 17/38 (2013.01); G01R 33/02 (2013.01); G01R 33/0206 (2013.01); G01R 33/07 (2013.01); G01R 33/09 (2013.01);
Abstract

For triaxial magnetic detection data sequentially acquired as data points in a triaxial coordinate system, an offset calculation unitcalculates virtual data points P'-P′ by evenly parallel-translating each of data points P-Pso that a reference data point P, for example, arbitrarily chosen from the data points P-Pcoincides with an origin point O. A virtual offset point C′ for which the sum of the distances between the virtual data points P′-P′ and a curved surface Hpassing through the origin point O is minimized is then calculated. An offset value C for the magnetic detection data is then calculated by parallel-translating the virtual offset point C′ so as to restore the parallel-translated portion.


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