A map information providing system for providing map data to a terminal device via a data transmission path, includes: a first server, the first server including a first storage unit for storing map data; and a second server connected with the first server and the terminal device via a network, the second...http://www.google.co.uk/patents/US6532475?utm_source=gb-gplus-sharePatent US6532475 - Map information providing system and map information searching method
