Patent ID: 6330453
Filing Date: 2001-12-11
Classification: G01C,G08G

Abstract:
A method for providing a plurality of kinds of map information from a base station through a broadcast channel to a terminal device, wherein the terminal device is mobile in a service area, said method comprising:adding, in the base station, index information about areas and scales of individual pieces of the map information respectively to the individual pieces of the map information, and further adding, in the base station, version information of the map information as index information;transmitting, from the base station through the broadcast channel, the map information accompanied by the index information;receiving, in the terminal device, the map information transmitted on the broadcast channel;specifying, in the terminal device, an area and a scale of a required piece of the map information based on an external input; andstoring, in the terminal device, the map information that, according to the version information, is the newest map information corresponding to the specified area and scale from among the received map information.