Patent ID: 6356836
Filing Date: 2002-03-12
Classification: G01C,G08G

Abstract:
A method for generating and updating data for use in a destination tracking system of at least one mobile unit comprising:generating and storing traveled distance data in at least one storage device provided in said mobile unit at least at predetermined time intervals, wherein the traveled distance data represent traveled sections by at least a series of nodes Pi and to each node Pi geographical coordinates xi and yi are assigned; generating and storing section data in the storage device provided in the mobile unit, said section data being generated by selecting, from the traveled distance data, nodes Pj and Pk, which define contiguous sections PjPk, to which at least their geographical starting point and end point are assigned; and generating a section data file from the section data and storing the section data file in the storage device provided in the mobile unit, said section data file being continuously supplemented and/or updated with section data newly generated by the mobile unit.