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Hidden point detection and warning method and apparatus for navigation system

  • US 8,260,543 B2
  • Filed: 03/29/2007
  • Issued: 09/04/2012
  • Est. Priority Date: 03/29/2007
  • Status: Active Grant
First Claim
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1. A method for displaying a route on a three-dimensional map image for a navigation system, comprising the following steps of:

  • displaying a three-dimensional map image which includes an image of a route on which a user or user'"'"'s vehicle is travelling;

    detecting a hidden point of the route on the three-dimensional map image at which the route becomes invisible by an obstruction object when viewed from a current position of the user; and

    notifying the user about the hidden point on the route thereby enabling the user to know the hidden point on the route in advance;

    wherein said step of notifying the user about the hidden point includes a step of displaying a text message regarding a distance and time to the hidden point from the current position.

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