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:
Nov. 24, 2009
Filed:
Nov. 17, 2005
Tomoo Nomura, Nagoya, JP;
Tomoo Nomura, Nagoya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
When a vehicle deviates from an initial route, a deviation route is memorized. Thereafter, when the vehicle comes back to the initial route, a cost is compared between the deviation route and a non-traveled route included in the initial route. When the cost of the deviation route is larger, the non-traveled route is supposed to be impassable due to road traffic closure or the like and then a detour coefficient is assigned to links included in the non-traveled route. When a route retrieval is conducted next, a cost of a link to which the detour coefficient is assigned is increased based on the detour coefficient. The detour coefficient is increased depending on a frequency of detouring.