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:
Jan. 27, 1998
Filed:
Sep. 14, 1995
Sumitomo Electric Industries,Ltd., Osaka, JP;
Abstract
A navigation apparatus stores road data which are formed by a network of internally stored road links and traveling costs corresponding to the respective ones of the internal road links. When the navigation apparatus receives traffic information corresponding to a specific external road link which is set for communication of traffic information, the apparatus identifies one or more internal links or portions thereof corresponding to the external link for which traffic information has been received, and the stored traveling costs are updated, on the basis of a conversion table. The traveling cost for an internal road link corresponding to a specific external link which is closed to traffic is updated to '.infin.'. The apparatus searches for and identifies a route between an origin and a destination based on the updated traveling costs and the network of the road links. The internal links do not need to correspond directly to the external links, but rather may include more branch points for example. Traffic information of different types and for different links can be processed and assimilated for correspondence with the internal links.