| 浅谈广播电视数字通信系统的网同步 |
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| 引用本文： | 王彧. 浅谈广播电视数字通信系统的网同步[J]. 科技情报开发与经济, 2009, 19(30): 85-87 |
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| 作者姓名： | 王彧 |
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| 作者单位： | 山西广播电视无线管理中心,山西,太原,030001 |
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| 摘 要： | 介绍了广播电视实现数字传输的特殊性,分析了网同步的必要性、方式及时钟类型,从时钟的工作模式、SDH(同步数字体系,Synchronous Digital Hierarchy)网同步的工作方式和SDH网元的定时方法等,指出只有实现数字通信网的网同步,才能实现数字节目的正常接收和交换。
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| 关 键 词： | 广播电视 数字通信系统 网同步 主从同步 |
A Brief Discussion on the Net Synchronization of Radio & Television Digital Communication System |
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| WANG Yu. A Brief Discussion on the Net Synchronization of Radio & Television Digital Communication System[J]. Sci-Tech Information Development & Economy, 2009, 19(30): 85-87 |
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| Authors: | WANG Yu |
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| Abstract: | This article introduces the specialties of radio & television digital transmission,and analyzes the necessity of network synchronization,net synchronization way,clock type,the clock mode,SDH (Synchronous Digital Hierarchy)net synchronization working and SDH network element timing methods. It is pointed out that only when the network synchronization of digital communication is realized,the normal reception and exchange of digital programming can be achieved. |
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| Keywords: | radio & television digital communication systems network synchronization master-slave synchronization |
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