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主要用来播送电视节目的有线电视网络系统,还可以提供接收和播放各种信息的新业务。本文介绍其中４种新业务:（１）用数字光缆传输设备,把游戏软件从中心传到各子中心,代替以往的游戏卡带。（２）紧急信息广播系统,通过有线电视画面上的字幕,及时通知诸如地震发生的震级、某地
The cable television network system, which is mainly used to broadcast television programs, can also provide new services for receiving and playing various kinds of information. This article describes four new services: (1) the use of digital optical cable transmission equipment, the game software from the center to the sub-center, instead of the previous game cartridge. (2) The emergency information broadcasting system, through subtitles on the cable TV screen, promptly notifies the earthquake magnitude such as an earthquake