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:
Mar. 12, 2013
Filed:
Mar. 18, 2008
Seiji Takahata, Nishio, JP;
Kimiyoshi Sawai, Okazaki, JP;
Motohiro Nakamura, Toyota, JP;
Aisin AW Co., Ltd., Anjo, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A road map data structure includes road network data Rn, representing roads by a connection relation of a plurality of links L, in a hierarchical structure of a plurality of levels, in which, as a link ID for each link L at a lowest level, consecutive serial IDs, according to a connection order of the links within a link line ML formed of a plurality of the consecutive links having a common attribute, are assigned to first links Lwhich have a corresponding link existing at a higher level, and a permanent ID, irrelevant with the connection order of the links, is assigned to a second link Lwhich does not have a corresponding link existing at a higher level.