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Map database apparatus

  • US 5,928,305 A
  • Filed: 04/19/1996
  • Issued: 07/27/1999
  • Est. Priority Date: 04/21/1995
  • Status: Expired due to Term
First Claim
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1. A map database apparatus, comprising a storage device in which link string data is stored, wherein:

  • a road on a map represented by a plurality of links and a plurality of nodes is expressed as said link string data, said links representing minimum units of said road, said nodes being at a start point and an end point of each of said plurality of links;

    said link string data has node information relating to said nodes, said node information including identifying information for identifying a link connected to said node and position information related to a position of said node on the map; and

    said node information is shared with adjacent links.

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