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Navigation method, in particular for vehicles

  • US 6,240,363 B1
  • Filed: 01/27/1999
  • Issued: 05/29/2001
  • Est. Priority Date: 01/30/1998
  • Status: Expired due to Term
First Claim
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1. Navigation method, in particular for leading a user in a vehicle back to a determined route without recalculating the route on the basis of necessary map material, comprising the steps of:

  • determining a route from a starting point to a destination;

    storing the determined route;

    determining the current position; and

    indicating direction information corresponding to the route if the current position is on the route, otherwise;

    determining a first position on the route that is closest to the current position;

    determining a second position on the route that follows the first position;

    selecting the first position as suitable position for returning to the route if the distance from the current position to the second position is longer than the distance from the first position to the second position, otherwise selecting the second position as suitable position for returning to the route; and

    indicating the direction leading back to the route, wherein this direction is derived from the current position and the selected one of the first or second positions.

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