Map display system has determining unit that determines whether route retrieved by search unit is compared with route received from information center to receive map data from transmitter based on transmitting requirement

摘要

A determining unit determines whether the route retrieved by a search unit is compared with the route received from an information center (10) to receive map data from a transmitter (13) based on the transmitting requirement from a map display device (15). Independent claims are also included for the following: (a) a map display device; (b) an information center; and (c) a map display program.