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:
Jul. 02, 2019

Filed:

Jul. 26, 2017
Applicant:

Casio Computer Co., Ltd., Tokyo, JP;

Inventors:

Tatsuya Sekitsuka, Kunitachi, JP;

Naoto Toda, Tokorozawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 33/00 (2006.01); G01R 33/02 (2006.01); G04B 47/06 (2006.01); G04G 21/02 (2010.01);
U.S. Cl.
CPC ...
G01R 33/0029 (2013.01); G01R 33/0047 (2013.01); G01R 33/02 (2013.01); G04B 47/065 (2013.01); G04G 21/02 (2013.01);
Abstract

A magnetic field measuring apparatus includes a first processor, a second processor, a motion sensor and a magnetic field sensor. The second processor has higher processing capability than the first processor. The first processor makes the second processor perform certain processing. When it is determined that the state of motion measured by the motion sensor is at a predetermined level or more, the second processor performs a magnetic field correction setting operation as one of the certain processing. The magnetic field correction setting operation involves retrieving measurement values of magnetic field from the magnetic field sensor which are measured at different postures according to a change of the state of motion, and determining an offset correction value for the geomagnetic field based on the measurement values.


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