×

Method and apparatus for generation of real-time graphical descriptions in navigational systems

  • US 7,130,740 B2
  • Filed: 11/07/2003
  • Issued: 10/31/2006
  • Est. Priority Date: 11/07/2003
  • Status: Active Grant
First Claim
Patent Images

1. A method of generating a symbolic description of a navigational element, the method comprising the steps of:

  • a. providing a radial grid, the radial grid comprising at least one group of subdivisions, the at least one group of subdivisions comprising a set of partitions extending outward from a center of the radial grid;

    b. providing a plurality of geographic coordinates;

    c. transforming the plurality of geographic coordinates to a plurality of planar coordinates;

    d. mapping the plurality of planar coordinates with the radial grid;

    e. allocating the plurality of planar coordinates to the at least one group of subdivisions;

    f. selecting at least one subdivision from the at least one group of subdivisions as an entry;

    g. selecting at least one subdivision from the at least one group of subdivisions as an exit; and

    h. generating the symbolic description of the navigational element based upon the entry and the exit.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×