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NAVIGATION SYSTEM, ENLARGED INTERSECTION IMAGE DISPLAYING METHOD USED IN THE SYSTEM, AND MAP INFORMATION GENERATING METHOD

  • US 20080208466A1
  • Filed: 02/08/2008
  • Published: 08/28/2008
  • Est. Priority Date: 02/28/2007
  • Status: Active Grant
First Claim
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1. An enlarged intersection image display method for a navigation system displaying an enlarged intersection image on a screen when a vehicle travels along a guidance path and approaches an intersection, the method comprising:

  • defining a circle having a predetermined radius, wherein a center of the circle is set to a first intersection;

    determining crossing points between the circle and an approach link and an exit link of the first intersection;

    setting a direction connecting the approach link crossing point and the first intersection as an approach direction, and setting a direction connecting the first intersection and the exit link crossing point as an exit direction; and

    drawing, on a screen of a display, an enlarged intersection image such that the approach direction is aligned with a 12 o'"'"'clock direction on the screen, and a traveling direction arrow extending from the approach direction toward the exit direction.

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