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:
Apr. 10, 2012
Filed:
Oct. 21, 2008
Yuki Nakai, Nagoya, JP;
Yuki Nakai, Nagoya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A navigation system includes: an information center; a navigation device of a vehicle communicating with the information center; a communication unit transmitting information of a destination to the information center; a center side transmission unit searching positional information of the destination in a database of the information center and transmitting the positional information to the navigation device; a calculation unit of the navigation device calculating a first route to the destination; a navigation side transmission unit transmitting first route calculation result to the information center; and a determination unit of the information center calculating a second route to the destination, comparing second route calculation result with the first route calculation result, and determining whether the navigation device guides a route to the destination based on the first or second route calculation result.