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. 07, 2015

Filed:

Mar. 08, 2010
Applicants:

Norihiro Nishiuma, Tokyo, JP;

Masahiko Ikawa, Tokyo, JP;

Yasuhiro Nishikawa, Tokyo, JP;

Ryusuke Kinoshita, Tokyo, JP;

Takashi Irie, Tokyo, JP;

Inventors:

Norihiro Nishiuma, Tokyo, JP;

Masahiko Ikawa, Tokyo, JP;

Yasuhiro Nishikawa, Tokyo, JP;

Ryusuke Kinoshita, Tokyo, JP;

Takashi Irie, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01C 21/34 (2006.01); G08G 1/123 (2006.01);
U.S. Cl.
CPC ...
G01C 21/3469 (2013.01);
Abstract

A route search device capable of searching for a route with the lowest energy cost at a high speed even if the distance between start and end points is long. The route search device includes: a long distance search attribute calculation section for calculating, as an attribute of one long distance search link, the sum of upslope elevation differences of a plurality of short distance search links and the sum of downslope elevation differences of the short distance search links corresponding to the one long distance search link; and a link cost calculation section for calculating, based on the attribute of the long distance search link and vehicle characteristics, a link cost that is an energy consumption at a time when a vehicle travels in the long distance search link.


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