Patent ID: 6249742
Filing Date: 2001-06-19
Classification: G01C,G06Q,G09B,Y10S

Abstract:
In a navigation system that includes hardware and software components and that uses a geographic database stored on a computer-readable medium, a combination comprising:a route calculation feature wherein a data output representing a solution route between an origin and a destination is determined by using a first portion of the geographic database that contains routing data, anda route guidance feature wherein detailed maneuvering instructions for following the solution route are provided one at a time to a user of the navigation system by using a second portion of the geographic database that contains maneuvering data;a route preview feature wherein a summary of the solution route is provided to the user prior to the detailed maneuvering instructions, wherein the route preview feature includes:a first routine that obtains the data output representing the solution route;a second routine that evaluates entries in the data output representing the solution route to determine whether a route preview event is indicated; anda third routine that stores data for each entry in the data output that represents the solution route for which a route preview event is indicated, wherein the data stored for each entry includes a reference to a data entity that contains a name by which a road in the solution route associated with the entry is known.