ROUTE DATA TRANSMISSION METHOD IN COMMUNICATION NAVIGATION SYSTEM, SERVER DEVICE AND COMMUNICATION NAVIGATION TERMINAL DEVICE

摘要

PROBLEM TO BE SOLVED: To select the transmission pattern of the optimum drawing method on a user side at the time of reception of route data in a communication navigation system. SOLUTION: In the communication navigation system S, the transmission pattern of the dot row data of a route in a server device SV is divided into a first transmission pattern for transmitting a coordinates dot row from absolute coordinates becoming a standard and relative coordinates annexed to the absolute coordinates, and a second transmission pattern dividing the dot row data of the route into units same to map data to transmit the same. Either one of these first and second transmission patterns can be selected in a terminal device T.