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Navigation apparatus, server apparatus, navigation method, and navigation program

  • US 8,380,434 B2
  • Filed: 02/16/2011
  • Issued: 02/19/2013
  • Est. Priority Date: 10/23/2003
  • Status: Expired due to Fees
First Claim
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1. A navigation method for 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 method comprising:

  • sending a request for searching the route to the server;

    receiving information on the route from the server;

    measuring an elapsed time from a start of the route guidance;

    performing the route guidance based on the information received; and

    cutting off, upon a determination that the elapsed time measured has reached a predetermined time, communications with the server and an external device even while the route is being guided or a current location received from the external device is being checked, and coming into a standby state to decrease bandwidth usages between the navigation device and the server and between the navigation device and the external device, and to reduce a communication charge associated with the bandwidth usages.

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