A system and method for displaying a present position of a moving object on a road are disclosed in which a road map information surrounding the present position of the moving object is displayed together with the present position of the moving object and the present position of the vehicle which is...http://www.google.es/patents/US4970652?utm_source=gb-gplus-sharePatente US4970652 - System and method for displaying present position for moving object
System and method for displaying present position for moving object