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Traffic navigation apparatus having a by-pass function

  • US 6,061,629 A
  • Filed: 12/30/1992
  • Issued: 05/09/2000
  • Est. Priority Date: 01/22/1992
  • Status: Expired due to Term
First Claim
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1. A traffic navigation apparatus for a vehicle comprising:

  • means for storing map data of a map which covers at least a moving range of said vehicle;

    means for detecting the current position of said vehicle;

    means for setting an avoidance region on said map to be by-passed by said vehicle;

    means for specifying two arbitrary points on said map;

    first search means for seeking a recommendable route between said two points;

    second search means for seeking a recommendable route which connects said two points by by-passing said avoidance region; and

    means for displaying the recommendable route which is sought by said first search means together with said map based on the current position if a difference between a distance of the recommendable route sought by said first search means and a distance of the recommendable route sought by said second search means is larger than a predetermined value, and otherwise displaying the recommendable route which is sought by said second search means together with said map based on the current position.

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