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:
Oct. 01, 2013
Filed:
Nov. 01, 2007
Tadatomi Ishigami, Tokyo, JP;
Masatoshi Fujii, Tokyo, JP;
Shigeki Kumagai, Hyogo, JP;
Keika Kan, Tokyo, JP;
Sadami Ouchi, Tokyo, JP;
Hiroaki Kato, Tokyo, JP;
Tadatomi Ishigami, Tokyo, JP;
Masatoshi Fujii, Tokyo, JP;
Shigeki Kumagai, Hyogo, JP;
Keika Kan, Tokyo, JP;
Sadami Ouchi, Tokyo, JP;
Hiroaki Kato, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A car navigation system includes a distance sensor; an angular velocity sensorfor detecting angular velocity having a sensor detection axis in a vertical direction of a casing; an acceleration sensorfor detecting acceleration having a sensor detection axis in a back and forth direction of the casing on a horizontal plane; a body velocity and acceleration measuring unitfor measuring velocity and acceleration in the body direction of vehicle movement from the signal from the distance sensor; an angular velocity measuring unitfor measuring angular velocity from the signal from the angular velocity sensor; a body roll angle estimating unitfor estimating a body roll angle from the body direction of vehicle movement velocity and angular velocity; an acceleration sensor output estimating unitfor outputting, when the casing is set in the body with a rotation in a yaw direction, estimation values of the output signal of the acceleration sensor at every prescribed angle; and a yaw direction mounted angle detecting unitfor determining as a yaw direction mounted angle in the body an angle at a time when an estimated value is obtained which agrees most closely with a value remaining after subtracting from the signal from the acceleration sensor its offset component.