web前端-前端编码复用系统建设方案分析与改造技术的研究.pdf

ABSTRACT

In this paper, the broadcast tower front-end overall system architecture is

analyzed, especially studied the code reuse system the technical difficulties with the

actual situation for testing and analysis. In the global rapid development of digital TV

and "triple play" increasingly forward under the historical background, the work is

very important for ensuring the security of the broadcast. Hereby formulate special

tianjin local business code reuse system design and implementation scheme with the

current situation of feasibility study.

completing system, carries on the function test and record the related data and

conclusions. Among them, found in the process of the encoder switch business

interruption for a long time and rate slower the response of the network security

hidden danger. In the pilot phase, system failure case also confirms this. To eliminate

these problems and avoid emergency process operation of radio and television design

defects of mutual constraint，construct two sets of independent code reuse system to

separate broadcast and television，make the structure more reasonable, level more

clearly, and easy to manage. For the transformation and optimization of the system, in

terms of hardware, broadcasting code reuse system design use THOMSON’s VIBE

real-time coding 15 road signals and complete Cisco’s DCM reuse function; in terms

KEY WORDS: safety broadcast code reuse system system reformation

目 录

第一章 绪论 ................................................................................................................1

1.1 研究背景 ........................................................................................................1

1.2 研究现状及研究目的 ....................................................................................2

2.1 天津流编码复用系统概述 ............................................................................6

2.1.1 系统设计的理论分析 ..........................................................................6

2.1.2 系统架构简述 ......................................................................................7

2.1.3 系统设备的机房布局 ..........................................................................8

2.2 系统硬件简述 ................................................................................................9

2.2.1 Network 信源光收板卡 .......................................................................9

2.2.2 TANDBERG E5710 编码器 ................................................................9

2.2.3 TANDBERG MX8400 复用器 ..........................................................10

2.2.4 TANDBERG nCompass Control 网管 .............................................. 11

2.3 系统软件配置简述 ......................................................................................13

2.4.4 复用器码流输出测试 ........................................................................38

2.4.5 节目解码监看测试 ............................................................................41

2.4.6 nCompass 网管中设备图标及其运行状态、设置及控制测试 ......42

2.4.7 编码器切换测试 ................................................................................42

第三章 系统故障的解读与剖析..............................................................................46

3.1 系统的试运行阶段 ......................................................................................46

3.1.1 概述 ....................................................................................................46

3.1.2 应急操作流程及小结 ........................................................................46

3.2 天津流节目及广播业务播出中断事故 ......................................................46

3.2.1 应急处理 ............................................................................................46

3.2.2 故障判断 ............................................................................................47

3.2.3 故障解析 ............................................................................................49

4.1.1 系统改造与优化的主导思想 ............................................................53

4.1.2 广播业务编码复用系统架构简述 ....................................................53

4.1.3 电视业务编码复用系统架构简述 ....................................................54

4.1.4 新系统设备的机房布局 ....................................................................54

4.2 系统硬件及软件配置简述 ..........................................................................55

4.2.1 DCM 设备..........................................................................................55

4.2.2 VIBE 音频网管编码配置..................................................................56

4.2.3 DCM 音频复用器网管......................................................................69

4.2.4 天津 NCC 中 Profile 配置调整.........................................................72

4.3 改造后功能测试 ..........................................................................................74

4.3.7 编码器切换测试 ................................................................................77

4.4 正式上线运行阶段 ......................................................................................79

4.4.1 概述 ....................................................................................................79

4.4.2 应急预案及排障方法 ........................................................................80

第五章 总结与展望..................................................................................................82

5.1 总结 ..............................................................................................................82

5.2 展望 ..............................................................................................................82

5.2.1 高清业务 ............................................................................................82

5.2.2 交互业务的增值及其多屏互动 ........................................................82

参考文献 ......................................................................................................................84

发表论文和参加科研情况说明..................................................................................87

附 录 ..........................................................................................................................88