Patent ID: 6519526
Filing Date: 2003-02-11
Classification: G09B

Abstract:
A method of updating registered information to be re-registered when an old digital map is updated to a new digital map, the method comprising the steps of:acquiring coordinate series data representing an old shape of a road around an old registration point on the old digital map from a data base of the old digital map, wherein the shape of the road includes an old reference point; obtaining a positional relationship between the old reference point and the old registration point; carrying out shape matching on the new digital map by using the coordinate series data; obtaining a new shape of a road on the new digital map corresponding to the old shape of the road on the old digital map; obtaining a new reference point on the new digital map corresponding to the old reference point from the new shape of the road thus obtained; and specifying the new registration point on the new digital map based on a positional relationship with the new reference point on the new map.