Patent ID: 7098923
Filing Date: 2006-08-29
Classification: G01C,G08G

Abstract:
1. A navigation terminal device connected to a server through a communication line for requesting map information from the server, said navigation terminal device comprising: a map information receiving unit for receiving maps, of a peripheral region around a reference point, from the server by inputting retrieval information about the reference point; a route line drawing unit for computing an orientation from the reference point to a destination, and for superimposing a straight route line on the maps for tracing a route from the reference point to the destination; a map information requesting unit for requesting again that the server distributes the map information of the adjacent peripheral region if the destination is not within the received map of the peripheral region, and a route line re-drawing unit for searching the destination by screen scrolling the updated map information, re-computing the orientation from the reference point to the destination to re-draw the route line which can be continuously traced from the reference point to the destination.