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. 23, 1999
Filed:
Apr. 29, 1997
Satoru Aito, Anjo, JP;
Masahiro Suetsugu, Anjo, JP;
Toyoji Hiyokawa, Anjo, JP;
Kazuteru Maekawa, Anjo, JP;
Takeshi Yanagikubo, Anjo, JP;
Aisin AW Co., Ltd., , JP;
Abstract
In a navigation apparatus for a vehicle, a route is determined in an ordinary-road-preferential mode or a toll-road-preferential mode, and route guidance is provided based on the thus-determined route. When the vehicle deviates from the determined route, redetermination is conducted so as to obtain a new route based on which guidance is provided. For example, when the vehicle has deviated from a route determined in the ordinary-road-preferential mode in order to enter a toll road, the user operates a toll-road-preference ON touch button so to change the determination mode to the toll-road preferential mode, so that route redetermination is carried out in a state in which priority is given to toll roads. In the navigation apparatus, optimum interchanges of a special road are automatically searched, and a route that preferentially uses the special road is calculated.