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NAVIGATION DEVICE, NAVIGATION METHOD, AND MOBILE PHONE HAVING NAVIGATION FUNCTION

  • US 20110066372A1
  • Filed: 07/28/2010
  • Published: 03/17/2011
  • Est. Priority Date: 09/15/2009
  • Status: Abandoned Application
First Claim
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1. A navigation device comprising:

  • position measuring means that measures a present position on the basis of satellite signals received from satellites;

    map displaying means that reads a local map including the present position from storage means and displays the local map on display means;

    present position notifying means that generates a mark and displays the mark on the local map, the mark representing the present position and having a predetermined shape;

    estimated present position acquiring means that acquires an estimated present position by estimating the present position in a communication environment in which the satellite signals are unreceivable; and

    control means that reads attribute information about a next link that is next to a present link including the present position and, if the control means determines that the next link is an area in which a reception sensitivity for the satellite signals is low, does not fix the mark and continuously displays the mark on the local map in accordance with the estimated present position instead of using the present position measured by the position measuring means after the present position has moved from the present link to the next link.

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