DEVICE AND METHOD FOR DATA CONVERSION, DEVICE AND METHOD FOR DATA TRANSMISSION AND RECEPTION AND NETWORK SYSTEM

摘要

PROBLEM TO BE SOLVED: To transmit data to a plurality of receiving terminals that correspond to different data formats by efficiently using network resources. SOLUTION: In this network system which consists of a plurality of communication nodes and in which a PC 2 and a PDA 3 receive transmission data from a server device 1, each relay node 4 acquires a communication network parameter about a communication network that connects the individual communication nodes and decides a communication route on the basis of the format of the data transmitted from the server device 1, a format conversion parameter about the kind of format conversion in format converting devices 5a and 5b and the acquired communication network parameter.