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Data structure of map data, map data storage medium, map data updating method and map data processing apparatus

  • US 20050058155A1
  • Filed: 08/25/2004
  • Published: 03/17/2005
  • Est. Priority Date: 08/26/2003
  • Status: Active Grant
First Claim
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1. A data structure for map data comprising:

  • node data which indicates information concerning nodes that represent points along a road;

    link data which indicates information concerning a link that represents a road between the points;

    a link row which represents a series of roads as a series of links in a road system;

    link row data in which the link data for links constituting the link row are arranged in the order that the links are connected; and

    a node identifier which identifies the nodes, wherein the road system is expressed by using the nodes and the links;

    the node data for each of the nodes of the road system are provided separately from the link row data;

    the node identifiers are provided for each of the nodes of the road system; and

    the link data include information that indicates the node identifier for a node located at one link end that is defined in accordance with the direction of the link row.

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