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Graphic data processing system

  • US 5,945,976 A
  • Filed: 12/10/1996
  • Issued: 08/31/1999
  • Est. Priority Date: 11/14/1991
  • Status: Expired due to Fees
First Claim
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1. A graphic data processing system for displaying a scene, comprising:

  • means for retrieving vector map data;

    means for generating scene data from the retrieved vector map data;

    means for projecting and displaying the generated scene data on a two-dimensional plane determined by position and direction of a visual point;

    means for changing the position or direction of said visual point; and

    means for selecting a display method which displays said scene data by the use of the said scene data display means on the basis of a changed visual point without displaying said vector map data in place of said scene data when said visual point is changed from a vertical direction to a horizontal direction by the use of said visual point change means, and a display method which displays said vector map data in place of said scene data on said display means when said visual point is changed from a horizontal direction to a vertical direction by the use of said visual point change means.

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