张海涛同志在CCBN2009主题报告会上的讲话

各位来宾,各位朋友．同志们： 一年一度的中国国际广播电视信息网络展览会（CCBN）就要开幕了．我代表广电总局和王太华同志对CCBN的举办表示热烈祝贺,对前来参加展览会的国内外厂商和各界朋友表示热烈欢迎!CCBN已成功举办了十六届．已成为国际上具有重要影响的广播电视展览盛会。在当前国际金融危机的情况下,今年的CCBN展会面积创历史纪录．参展厂商比去年增加了78％．特别是国内参展厂商增加了14．6％,这说明设备产业界对我国广播电视发展前景充满信心。     

县级村村响大喇叭广播建设纪实与应用探索

系统介绍了县级市村村响大喇叭建设方案和系统架构,搭建了以市为中心、以镇村为依托、村组为基础的覆盖全市的政府应急预警公共广播服务体系,加强了农村宣传阵地建设和应急服务体系建设,提升了广播电视公共服务的质量和水平。     

无线智能播控技术在农村应急广播中的应用

农村应急广播系统是发布政策信息、灾害预警的主要平台,是党和国家对农村等地的弱势群体特别关注后应运而生的产物,属于国家民生实事项目,是政府为民服务的一种手段,服务于政府管理,有必要通过无线智能播控技术开展建设。文章通过分析智能广播电台播控技术,围绕RDS、“村村响”等方面探究智能播控技术在农村应急广播工作中的应用,为构建农村公共服务体系提供技术支撑。     

构建支撑现代国际广播体系的多媒体全业务技术服务平台

本文旨在记录一个为“现代国际广播体系”提供多媒体全业务综合服务的新技术系统的设计、建设和运行过程,从而探讨广播影视系统多媒体全业务技术服务的实现。     

International standards in radio communication

A REVIEW is given of some of the international technical standards activities and Recommendations of the International Radio Consultative Committee (CCIR) for radio communications. A new Recommendation for the digital coding of television signals provides a basis for a single world standard for video signals in broadcasting studios, recording, and exchange of programs. Work is underway on high-definition television and a standard for satellite direct broadcasting downlink. Fixed satellite earth-station antenna standards (developed earlier), and performance criteria for satellite links in the integrated services digital network are being improved. Digital microwave radio relay standards include allowable bit error ratio, channel arrangements, and baseband interconnection. Mobile service Recommendations include system standards for VHF/UHF automated radiotelephony, a future global maritime distress and safety system, and radio paging codes and formats. Standards for the use of ARQ in HF and maritime communications, and the use of Universal Coordinated Time (UTC) in international telecommunications, are based on CCIR Recommendations.     

广播电台核心播控系统平台建设

核心播控系统平台作为广播电台采、编、录、播、发、监流程中的核心环节,承担广播信号的调度、交换、分配、传输、监测等功能,是全台安全播出的核心.本文主要对核心播控系统平台的建设情况进行介绍,建成后的核心播控系统平台能满足北京电台传统播出需求和新媒体融合发展需求,是一个汇集了全面应急、全面监测、信号调度控制等诸多功能的大型集...     

Unified Radio Network for Broadcasting and Broadband Wireless Access [Advances in Mobile Multimedia]

In this article we propose a unified radio network architecture, broadband wireless multimedia (BWM), which integrates broadcasting service and broadband wireless access service at both the application and physical layers. A simple, flexible, and comprehensive radio resource management framework is developed for the unified radio network. It is shown that the proposed radio network architecture has many advantages over existing ones. In addition, the new architecture is currently being considered in China for the system level design.     

智慧广电传播领域关键技术研究

构建高速、泛在、智慧、安全的智慧内容传播体系是新时代智慧广电建设的关键环节.智慧内容传播体系的建立,有助于推进广电网络服务品质的升级,实现广电智慧内容传播的规范化、便捷化和智能化,为新时代下广电网络转型升级注入新动力.本文在研究分析智慧内容传播体系应具备能力的基础上,探讨了实现高质量智慧传输网络服务的实施路径.     

Consumer digital radio: from concept to reality

The commercial advent of digital broadcast radio in the UK is upon us. The concepts and technology of digital audio broadcasting, DAB, originated from the European Eureka 147 project, which began in 1988 and which has created international standards now adopted by ETSI and the ITU. In the UK today the BBC provides DAB coverage to some 60% of the population. A DAB licence for independent radio broadcasting has been awarded to a consortium called Digital 1 which will offer a similar level of coverage within 12 months. Digital radio had been held back by a lack of consumer receivers. High-end consumer products are, however, now beginning to appear in the shops. This paper describes the development of a world-leading, credit-card-sized DAB OEM receiver module that is already allowing new players and consumer products to enter the market     

5G广播电视演进和主要技术特点

地面无线广播电视作为广播电视最为重要的传输手段,在广播电视发展的很长一段时间内占据主导地位。随着计算机、微电子、移动通信、材料科学等技术飞速发展和人们不断提高的精神、物质、文化需求,无线广播电视技术开始探索向移动终端和个性化领域发展,广播电视与通信技术的融合已经成为全球性话题和探索研究方向。以国际通信组织3GPP为代表的通信与广播电视技术人员,从本世纪初开始了对现代广播电视传播体系的全面系统研究和探讨。本文全面介绍了3GPP广播模式的发展历程和主要技术特点,并基于我国广电兼具广播运营商和电信运营商的双重身份,指出了广电5G广播电视网建设演进路线,建议了未来中国3GPP广播电视分三阶段发展,提出了中国广播电视的核心模式:卫星组网+地面广播+基站覆盖。     

Communication Satellites for Public Television

Over the years, broadcasting in the United States, both radio and television, developed chiefly as a privately owned, commercial service. In that same period, however, some commercial television and radio stations emerged to meet various special needs, as for example, the requirements of schools and universities for educational programs. These stations were mainly local, set up by educational and other local public organizations. These groups had a number of common interests which resulted in the setting up of associations or other similar bodies which could act for groups of stations and organize the sharing of programs. The most familiar of these early organizations is probably National Educational Television (NET) which for many years operated a limited television distribution network.     

结合市民热线81890打造广电新型客服体系

建立和完善广电的客服体系将是赢得市场、留住用户的重要环节,论述广电系统构筑新型客服体系的思路,力图结合各种先进的管理平台,构建高效、科学的客服体系,必然有助于打造广电服务利器,增强市场竞争力,构筑广电事业辉煌的明天。     

智慧广电安全保障体系建设升级方案研究

安全播出是广播电视工作的生命线,随着广播电视业务模式、载体形态更加多元多样多变,迫切需要构建主动、动态、自适应的智慧化安全保障体系,以安全促发展.本文将对智慧广电安全保障体系的体系架构、能力要求进行剖析解读,并提出建设升级重点考虑的实施方案建议.     

紧盯五大“瓶颈”问题 推动广电三网融合

三网融合的号角已经吹响,它不仅是将现有网络资源有效整合、互联互通,而且会形成新的服务和运营机制,并有利于产业结构的优化。三网融合带来了难得的发展机遇,但是我们也应该清醒地看到广电在面临三网融合的同时也存在挑战,“十二五”期间,在广电领域,如何树立科学发展观,正视制约发展的“瓶颈”问题,着力推进三网融合,更加值得我们关注。     

CD by radio-digital radio broadcasting

Engineers have been looking at ways of broadcasting a digital radio service to the general public, which would ideally have the following features: sound quality comparable with that of the CD; reliable reception to all listeners in the coverage area; capability of offering coverage of all listeners; capability of fixed, mobile and portable reception using simple low grains antennas; simple push-button programme selection-no tuning; frequency efficiency, so that many services can be provided in any spectrum available; and capability of operation from terrestrial transmitters and/or satellite. The author describes the requirements of a digital audio broadcasting system regarding intersymbol interference and then discusses COFDM, coded-orthogonal frequency division multiplex. The author also discusses low-bit-rate sound, terrestrial transmission, satellite broadcasting, receivers, frequency allocation and system testing     

Multimedia goes mobile in broadcast networks

In digital broadcasting systems, like Eureka 147 DAB, it is possible to separate the actual service from the transmission system. Such a separation enables the distribution of any type of digital data to stationary, portable, or mobile terminals. However, a radio channel for mobile reception has certain characteristics to which existing multimedia services must adapt. We present a multimedia system model for digital broadcasting. We also discuss implementing this model within the broadcasting framework     

Some Highlights in the Engineering of the British Commercial Independent Television Service

The history of the creation of a new national TV network for the United Kingdom is given. From the start, the United States has been accustomed to free enterprise radio and television services (not forgetting the FCC). But in the United Kingdom and Europe, however, broadcasting was strictly state-controlled and no advertising was permitted. Then, in 1954, a British Conservative government, against severe opposition from the Left, introduced a new "Television Act" which permitted a Public Authority?the Independent Television Authority (ITA)?to provide a second television service for the whole of the country by granting a franchise to a number of separate, financially self-supporting program companies, each with their own technical facilities and staff. These companies were to supply programs that they and the ITA considered to be of national merit to various regions of the country and to broadcast such programs over a comprehensive lines network and a series of transmitting stations sited, built, and operated by the ITA itself. This was a unique combination of private initiative and public control. In contrast to a centralized organization such as the BBC, the ITA established its service as a federal system. The considerable influence of this policy on the way the new network should be engineered and the technical developments that followed are described. In particular, it is interesting to note the spectacular rate of increase in the number of viewers receiving the ITA programs as the new service was developed.     

基于DTMB的多屏互动业务技术模式探析

地面无线广播技术一直是广播电视传输覆盖、实施公共服务的主要手段之一,面对智能终端的快速普及,本文提出了一种基于地面数字电视广播的多屏互动业务技术模式,能够充分利用现有宝贵的无线频率资源,实现视频服务由面向电视机或接收机单一终端到面向电视机、笔记本电脑、平板电脑、智能手机等多终端的扩展,实现地面数字电视广播的跨屏融合应用。     

智慧广电制播能力体系构建研究

智慧广电在广电行业的不懈努力下已取得显著成果,但随着科学技术、业务应用不断发展,智慧广电的理论体系需不断的动态迭代更新,本文聚焦智慧广电中的智慧制播能力,通过对当前我国制播机构应用的各项智慧制播技术、成果进行概括和凝练,总结出一套智慧制播能力体系,该体系不仅可对媒体机构的智慧化制播水平进行综合评估,还可为智慧广电建设提供参考。     

Land mobile satellite systems

The general advantages and potential operating characteristics of the mobile satellite service (MSS) are described, and distinctions are made between radio telephone, which is interconnected to the public switched telephone network, and private mobile radio systems. Mobile satellite service offers voice, data, position location, and paging services, interconnection to the public switched telephone network, and the possibility of private networks. Performance and cost characteristics are given along with summaries of market needs and market demands. The space and ground systems of the MSS are described