南昌有线数字电视系统平台研究
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摘要
有线电视系统的数字化将彻底改变广播电视经营模式和竞争格局,频道资源更加丰富,传输渠道多元化,电视业务多样化,为现有广播电视发展提供了千载难逢的机遇。目前南昌数字电视仍处于起步阶段,当全国各地有线数字电视用户规模迅速膨胀的同时,南昌的推进步伐却明显落后于其他城市,无法满足用户上网、通信、即时新闻、信息点播等新业务需求,电视用户正在逐步向互联网分流,越来越多的年轻观众正在远离电视机。针对南昌电视系统的现状,本文采用BigBand公司的新一代数字前端系统解决方案进行了南昌有线电视系统升级与改造,其内容包括宽带多媒体业务路由平台(BMR)、新一代实时MPEG-2编码器(BREZO)、边缘高密度QAM平台(BME50)以及统一网管系统SMU1000,并由此组成一个全新的数字业务系统运营平台、服务平台。宽带多媒体业务路由平台BMR,在实现传统数字前端基本功能(如MPEG编码、复用、加扰、QAM调制)的基础上,采用当今业界最强大的数字视频媒体处理引擎和视频路由交换技术,提供更多的应用功能,包括传输流路由交换、数字码流重组优化、高清电视、千兆以太网传输、数字广告插播、VOD点播以及崭新的交换式广播等。系统试运行期间,完全满足前期规划需求。
Cable TV system of digital will completely change radio and television business model and competition pattern, with channel resources more abundant, the transmission channels pluralism, TV business diversification, the development of the existing radio and television provided a golden opportunity. Currently Nanchang digital TV is still in the infancy, Cable digital TV users nationwide increase rapidly, but the propulsion pace of Nanchang city was obviously lag behind other cities, So that it cannot satisfy users doing something:such as Internet, communication, real-time news, information demand and other new business requirements.TV users are gradually going to the Internet tap, with more and more young viewers far from TV. According to present situation of Nanchang TV system is considered, this paper adopts BigBand company's new generation digital front-end system solutions for the Nanchang cable TV system upgrading and transformation,which includes broadband multimedia business routing platform(BMR), the new generation propels BMR real-time MPEG-2encoder (BREZO), edge high-density QAM platform (BME50) and unified net system called SMU1000composed a new digital business system operation platform, service platform. Broadband multimedia business routing platform BMR, in realizing propels traditional digital front-end basic functions (such as the MPEG encoding, reuse, scrambling. QAM modulation), adopt the most powerful digital video media processing engine and video routing exchange technology in current industry, provide more applications, including the transmission flow function by exchange, digital code streaming reorganization, HD television, gigabit Ethernet transmission, digital advertisement inter-cut,VOD on demand and brand-new switched radio, etc. System commissioning period, completely satisfy demand prophase planning.
Cable TV system of digital will completely change radio and television business model and competition pattern, with channel resources more abundant, the transmission channels pluralism, TV business diversification, the development of the existing radio and television provided a golden opportunity. Currently Nanchang digital TV is still in the infancy, Cable digital TV users nationwide increase rapidly, but the propulsion pace of Nanchang city was obviously lag behind other cities, So that it cannot satisfy users doing something:such as Internet, communication, real-time news, information demand and other new business requirements.TV users are gradually going to the Internet tap, with more and more young viewers far from TV. According to present situation of Nanchang TV system is considered, this paper adopts BigBand company's new generation digital front-end system solutions for the Nanchang cable TV system upgrading and transformation,which includes broadband multimedia business routing platform(BMR), the new generation propels BMR real-time MPEG-2encoder (BREZO), edge high-density QAM platform (BME50) and unified net system called SMU1000composed a new digital business system operation platform, service platform. Broadband multimedia business routing platform BMR, in realizing propels traditional digital front-end basic functions (such as the MPEG encoding, reuse, scrambling. QAM modulation), adopt the most powerful digital video media processing engine and video routing exchange technology in current industry, provide more applications, including the transmission flow function by exchange, digital code streaming reorganization, HD television, gigabit Ethernet transmission, digital advertisement inter-cut,VOD on demand and brand-new switched radio, etc. System commissioning period, completely satisfy demand prophase planning.
引文
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[2]梁山,张金.多功能有线数字电视前端系统[J].中国有线电视,2006,11(3)：1020～1023.
[3]马成彬,胡晓东.基于有线数字电视前端的备份思路探讨[J].广播与电视技术,2009,36(3)：118～123.
[4]李朝洪.济南有线数字电视发展现状分析与对策研究[D].大连理工大学硕士学位论文,2006.
[5]刘立权.江西广电网络数字电视平台技术方案介绍[J].广播电视信息,2004,(11)：44～46.
[6]陈谦.宁波数字电视DVB前端系统设计[D].浙江工业大学硕十学位论文,2008.
[7]颜晓伟.浅淡中小电视台有线数字电视的实现[J].现代经济信息,2003,(6)：63～66.
[8]万户.浅淡数字电视的发展及前景[J].卫星电视与宽带多媒体,2009,(12)：32～33.
[9]迟晓君.浅谈我国有线数字电视的发展问题与对策[J].科技信息,2010,(22)：365.
[10]燕婷.上海有线数字电视现状与发展[J].信息安全与技术,2010,(10)：22～26.
[11]刘一兵.基于数字电视标准特点的分析[J].黑龙江科技信息,2007,(22).
[12]魏宁.机顶盒EPG软件设计实现与通用软件升级规范研究[D].北京工业大学硕士学位论文.2006.
[13]李雪松.数字电视标准概述[J].西部广播电视,2005,4(3)：126～128.
[14]李新华.数字电视概述(上)[J].电机电器技术,2005, (3).
[15]李新华.数字电视概述(下)[J].电机电器技术,2005,(4).
[16]廉正光.数字电视概述[J].高清晰度电视,2000,(6).
[17]陈田明.美欧数字电视制式比较及中国数字电视展望[J].深圳大学学报(理工版)2003,20(2)：43～47.
[18]朱仁康.数字电视发展概要[J].微电子技术,2001,29(4)：6-10.
[19]姜武.浅谈电视广播的数字化[J].浙江广播电视高等专科学校学报,2001,8(2)：90～93.
[20]黄晓东,周源华.基于数字电视系统的数字业务广播平台[J].上海交通大学学报,2002,36(12)：1741～1744.
[21]孙显波.谈谈有线电视数字前端的构成[J].活力,2009,(15)：174.
[22]陈全军,李恳,杨波,周文浩.县级台数字电视前端平台的运行实践[J].有线电视技术,2010,17(2)：35～62.