DATA TRANSMISSION SYSTEM, TERMINAL DEVICE, DATA TRANSMISSION METHOD, RECORDING MEDIUM AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To solve the problem that a very wide transmission band is required in proportion to the number of terminal devices because data are collected by repeating individual communication between a dedicated terminal and each terminal. SOLUTION: Significant data are transmitted in one direction between a plurality of terminal devices, and the data are collected by a terminal device 1 located at the position of lowermost stream of a transmission path. As this device 1 is the one that has a data detecting unit for detecting whether or not the significant data written by another terminal device located at an upstream side of the transmission path is received; and a data selection section for transferring the significant data to the terminal device at the downstream side without any change if the reception of the significant data is detected, and outputting significant data generated in the inside of the terminal to a terminal device at the downstream side if the reception of the significant data is not detected. COPYRIGHT: (C)2005,JPO&NCIPI