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:
Oct. 15, 2002
Filed:
Mar. 15, 2000
Naohiro Sakashita, Obu, JP;
Denso Corporation, Kariya, JP;
Abstract
A navigation system, which can detect particular intersection as the intersection to be guided, even if the particular intersection is not judged as the intersection to be guided in a the Following-the-road judgment. A navigation system includes ECU, which mainly performs a following-the-road judgment and a ramp judgment. In the following-the-road judgment, the ECU determines the particular intersection as the intersection to be guided, when a continuity of the travel road is not secured before and after the intersection. In the ramp judgment,the ECU determines the particular intersection as the intersection to be guided, when the particular intersection is a branch point to an off-ramp, and when there is a merge point within a predetermined distance ahead from the branch point, and further when the recommended guidance route is set so that the vehicle keeps on traveling on the main lane. As a result, the ECU can adequately perform the travel guidance, even if the road has a unique shape such that the branch point is provided close to the merge point and the number of the lanes is increased only between the merge point and the branch point.