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.
Patent No.:
Date of Patent:
Sep. 30, 2014
Filed:
Jun. 11, 2012
Makoto Ohta, Tokyo, JP;
Makoto Ohta, Tokyo, JP;
Pentax Ricoh Imaging Company, Ltd., Tokyo, JP;
Abstract
A method of determining a direction of a triaxial electronic compass oriented in a specific direction by using the triaxial electronic compass and an inclination sensor, the method includes obtaining an elevation angle of the specific direction from the inclination sensor to switch a selection of two output values from the three output values to another selection of two output values therefrom; determining a geomagnetic aspect from the two output values; obtaining a rotational angle about an axis extending in the specific direction from the inclination sensor; calculating a deviation angle of the direction of the triaxial electronic compass which is caused by the selection switching, in accordance with the elevation angle, the geomagnetic aspect and the rotational angle; and correcting the direction of the triaxial electronic compass in accordance with the deviation angle.