Patent ID: 7917287
Filing Date: 2011-03-29
Classification: G01C,G08G

Abstract:
1. A navigation device that performs a route guidance based on a route from a current location to a destination, the navigation device being connected to a server for searching the route, the navigation device comprising: a communication controller configured to send a request for searching the route to the server; a guidance-information receiving unit configured to receive information on the route from the server; a time measuring unit configured to measure an elapsed time from a start of the route guidance; and a guidance controller configured to perform the route guidance based on the information received, wherein the communication controller commands the navigation device to cut off a communication with the server and to stand by upon a determination that the elapsed time measured has reached a predetermined time and when the route is being guided or a current location is being checked by the guidance controller, to decrease a bandwidth usage between the navigation device and the server and to reduce a communication charge associated with the bandwidth usage.