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:
Feb. 19, 2013

Filed:

Mar. 23, 2012
Applicants:

Koji Sengoku, Tokyo, JP;

Aiko Sugawara, Tokyo, JP;

Tadafumi Nogawa, Tokyo, JP;

Inventors:

Koji Sengoku, Tokyo, JP;

Aiko Sugawara, Tokyo, JP;

Tadafumi Nogawa, Tokyo, JP;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01C 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

According to a navigation server () of the present invention, in a mileage matrix containing elements which denote a mileage and are defined by respective mileage factors, a first element of the elements in the mileage matrix which is defined by recognized mileage factors is determined on the basis of the mileage of the recognized mileage of a first vehicle. A second element of the elements in the mileage matrix which is defined by unrecognized mileage factors is determined on the basis of the first element. According thereto, even when the mileage factors of a second vehicle are used to define the second element but not the first element, the previous mileage of the second vehicle can be evaluated with high accuracy in consideration of a relationship between the mileage and the mileage factors of the first vehicle estimated according to the known relationship therebetween.


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