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:
Oct. 29, 2013

Filed:

Mar. 18, 2008
Applicants:

Yasuhiro Monde, Tokyo, JP;

Katsuro Hayami, Tokyo, JP;

Masatoshi Fujii, Tokyo, JP;

Atsushi Maeda, Tokyo, JP;

Inventors:

Yasuhiro Monde, Tokyo, JP;

Katsuro Hayami, Tokyo, JP;

Masatoshi Fujii, Tokyo, JP;

Atsushi Maeda, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01C 21/00 (2006.01); G01C 21/34 (2006.01); G08G 1/123 (2006.01);
U.S. Cl.
CPC ...
Abstract

A navigation system includes: an angular velocity sensorfor detecting a change in an advancement direction of a vehicle; a vehicle azimuth calculation unitfor calculating a vehicle azimuth on the basis of angular velocity sensor information obtained from the angular velocity sensor; an on-board camerafor shooting a periphery of the vehicle; an image recognition unitfor recognizing an image obtained from the on-board camera; and an offset voltage correction unitfor performing a drift correction on the angular velocity sensor in accordance with an angle error between the vehicle azimuth calculated by the vehicle azimuth calculation unit and a vehicle azimuth determined from a white line on a road recognized by the image recognition unit.


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