Patent ID: 6366852
Filing Date: 2002-04-02
Classification: G01C,G08G

Abstract:
A navigation device comprising a map information storage means for storing map information including node information, line information and related information thereof, a present position detection means for detecting a present position of a moving body, a route searching means for searching a route from the present position to a guide point based on said map information, a voice guide message generation means for generating a voice guide message corresponding to the route searched by said route searching means, and a voice output means for outputting the voice guide message, wherein:said map information storage means stores a level of importance of each node and link as a part of said map information; and said voice guide message generation means selects the nodes and links on the searched route based on said level of importance and generates the voice guide message corresponding to the selected nodes and links, wherein said voice guide message generation means selects said nodes and links on the searched route in such a manner that a level of importance of the selected nodes and links is less than or equal to a predetermined reference value and a number of the selected nodes and links is less than or equal to a predetermined reference number, and generates the voice guide message corresponding to the selected nodes and links.