摘要
为解决边缘地区收视困难,日本在电视广播中采用了载频偏置技术。但限于可用频道数仍无法满足更多的用户能收看6套电视节目的需求,日本进一步研究并试用了电视同步广播方式,这是提高频道复用指数,解决同频干扰的有效方法。本文介绍了日本同步广播研究开发的概况及技术要点。
To solve the diffeculty in TV receiption in edge fields, Japan applied the carrier offset technique in TV broadcasting. But it is impossible to satisfy the more audience's need to watch 6 TV programmes due to the limited number of available channels. Therefore, Japan has conducted further research and trial of TV synchronous broadcasting system, which is an effective means of enhancing channel multiplex index and solving co-channel interference. An overview and main technical points of Japanese synchonous broadcasting research and development are given in the article.
出处
《广播与电视技术》
北大核心
1993年第5期9-16,共8页
Radio & TV Broadcast Engineering
关键词
电视广播
同步广播
载频偏置
日本
TV broadcasting Synchronous broadcasting Carrier offset technique
