| 摘要 |
PURPOSE: A text broadcasting system of railroad car is provided to provide information needed to text displaying devices by editing and transmitting information through wireless transmission from a main system and a base station. CONSTITUTION: A text broadcasting system of railroad car comprises a main device(1, text editing device), base stations(2) and text displaying parts(3). The main device(1) is used to input life information, important news and atmosphere information. The base stations(2) are disposed on each station building or on important locations where a railroad car passes and receives information transmitted from the main device(1). The text displaying parts(3) receives the information from the base stations and display the information through text displaying devices(3'). The information inputted to the main device(1) are transmitted to the base stations(2) through optical cables, then transmitted to the text displaying parts(3) through wireless transmission, thereby displayed on real time. An interface between the main device(1) and the base stations(2) is formed by using an MKS modem and a light transmitting device(4). Further, a text information data communication interface between the base stations(2) and the text displaying parts(3) are formed by using a field communication cable. |
