Road navigation system using electronic map route calculating software satellite positioning devices and the mobile telephone network

摘要

A remote-end route-calculating navigation system particularly relates to a system which is not equipped with expensive or costly navigation equipment for a navigation requester to acquire complete and instant navigation information therefrom. It is mainly made up of an information center in cooperation with a plurality of navigation requesters. The information center includes at least a main information unit having an electronic map and route calculating and navigating software, and a communication device capable of transmitting/receiving phonic and digital information. The navigation requester includes a satellite positioning device and a communication device storing the telephone number of the information center and the address of the digital information network so as to provide complete information for navigation requesters.