×

Navigation method and navigation system for means of locomotion

  • US 6,456,933 B1
  • Filed: 09/27/2001
  • Issued: 09/24/2002
  • Est. Priority Date: 12/21/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for navigating an apparatus of locomotion in accordance with a route including nodal points from one of a starting point and an instantaneous location to a destination in a case in which at least one of the nodal points of the route to be calculated is not contained in an internal digital map stored internally in a navigational system, the method comprising the steps of:

  • calculating that part of the route including exclusively nodal points of the internal digital map in accordance with an internal routing algorithm on the basis of the internal digital map to produce an internally calculated route portion;

    calculating that part of the route not including those of the nodal points stored in the internal digital map in accordance with an external routing algorithm to produce an externally calculated route portion on the basis of an external digital map stored externally with respect to the navigational system;

    determining transitional nodal points from the externally calculated route portion to the internally calculated route portion; and

    performing one of the steps of;

    causing an internal route guidance algorithm of the navigational system to execute a route guidance on the basis of the internally calculated route portion, and causing an external route guidance algorithm to execute the route guidance on the basis of the externally calculated route portion.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×