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Navigation method, device, system and computer readable medium

  • US 6,256,581 B1
  • Filed: 07/28/1999
  • Issued: 07/03/2001
  • Est. Priority Date: 07/30/1998
  • Status: Expired due to Fees
First Claim
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1. A navigation method for use in guiding a user from a present position to a destination position, comprising the steps of:

  • inputting information on said present position and said destination position;

    inputting data from a geographic database and a road network database with respect to said information and selecting a route from said present position to said destination position;

    determining particularity of route guide map according to the area and the density of data representing said selected route, selecting necessary data for guiding a user to said destination position according to said particularity and generating said route guide map;

    inputting data corresponding to said area from a spatial object network database and generating route guide sentence corresponding to said route guide map, and manipulating information in said route guide map and route guide sentence and outputting said manipulated information.

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