开发利用广播电视信道频谱资源开展数据广播  

Using Radio and TV Channels' Frequency Spectrum Sources to Develop Data Broadcasting

作　　者：文靖 

机构地区：[1]广电部广科院

出　　处：《广播与电视技术》1995年第6期3-7,共5页Radio & TV Broadcast Engineering

摘　　要：文章介绍了利用广播电视信道频谱中被闲置的频隙和时隙开展数据广播的几种主要方式，包括图文电视、调频多工广播、电视伴音的多工利用、卫星电视信道的多工数据广播等。其中就我国图文电视方式的数据广播作了重点叙述。This Paper introduces some main methods which use unused frequency and time intervals of radio and TV channels′frequency spectrum to develop data broadcasting.These methods include teletext, FM multiplexing broadcasting,TV sound multiplexing,satellite TV channels'multiplexing data broadcasting and so on.In this paper, the data broadcasting of Chinese teletext mode is mainly described.

关 键 词：图文电视 电视伴音 信道 频谱 数据广播 

分 类 号：TN949.27[电子电信—信号与信息处理] TN941.2[电子电信—信息与通信工程]