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Navigation device and method for displaying navigation information in a visual perspective view

  • US 5,936,553 A
  • Filed: 02/28/1997
  • Issued: 08/10/1999
  • Est. Priority Date: 02/28/1997
  • Status: Expired due to Term
First Claim
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1. An electrical navigational device, for processing and displaying navigational data, said device comprising:

  • a processor;

    a display, connected to said processor, for displaying a visual representation of said navigational data in a perspective view;

    wherein said navigational data is indicative of a top-down view of a map;

    wherein said processor transforms said navigational data to the said perspective view;

    wherein said navigational data indicative of said top-down view of a map is defined by a matrix of (x,z) coordinates;

    wherein said processor transforms each (x,z) coordinate to a corresponding perspective transformation coordinate (xp,yp), andwherein said processor transforms each said (x,z) coordinate to its associated perspective transformation coordinate (xp,yp) utilizing transformation equations;

    ##EQU4## where d is indicative of a selected periphery of said perspective view and h is indicative of an elevation of said perspective view.

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