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Navigation apparatus using a position index and information representative of roads and institutions

  • US 5,797,112 A
  • Filed: 09/21/1995
  • Issued: 08/18/1998
  • Est. Priority Date: 09/21/1994
  • Status: Expired due to Fees
First Claim
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1. A moving object navigation apparatus comprising:

  • input means for inputting institution names indicating a present location of a moving object and a destination using a natural language;

    memory means for storing a map including information representative of roads and institutions;

    a database for storing relationships between institution names on the map and position indexes;

    retrieval means for retrieving position indexes corresponding to institution names indicating the present location and the destination;

    calculation means for obtaining a shortest route between the position indexes of the present location and the destination by referring to the map stored in said memory means; and

    output means for outputting route information obtained by said calculation means to a user of the moving object,wherein said memory means stores information representative of intersections and junctions as the information representative of roads and institutions,wherein said output means outputs the route information obtained by said calculation means by using the information representative of intersections and junctions,wherein said memory means further stores information associated with road features as the information representative of roads and institutions, the information associated with road features including information representative of inclinations and widths of roads,wherein said calculation means extracts the information associated with roads from said memory means in accordance with route information obtained by said calculation means, andwherein said output means outputs information associated with the road features together with route information.

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