Patent ID: 7383127
Filing Date: 2008-06-03
Classification: G01C,G06F

Abstract:
1. A navigation apparatus for providing route guidance, comprising: a communication unit which obtains map data delivered through communication; a first memory area which stores detailed map data obtained by sending information of a starting position and a destination to a server, and downloading a detailed map of predetermined area around the starting position and the destination through the communication unit from the server; a second memory area which stores a nationwide simplified map in advance; a route guidance controller which requests a search to the server for a guidance route from the starting position to the destination by the communication unit, downloads information of the guidance route, and provides route guidance based upon the information of the guidance route by displaying the detailed map which has been downloaded and stored in the first memory area, when the route guidance is being provided on the predetermined area around the starting position and the destination, and by displaying the simplified map which has been stored in the second memory area, when running out of the predetermined area, wherein map data stored in the second memory area shows a much simplified map than a map shown by map data downloaded and stored in the first memory, and wherein the first memory area and the second memory area are provided by different memory devices.