南京广电交互电视内容平台

为加快数字电视的整体转换,实现更加个性化的服务,在原有以NVOD为中心的数字电视内容系统上进行升级扩容工作,为交互电视提供丰富的内容.实现了不同平台的发布和运营.系统包括节目收录系统、节目制作编辑系统、节目管理和编目系统、节目存储系统、节目迁移系统、节目监控系统、与其他系统接口等.     

基于大数据的广播电视安全播出技术

随着大数据时代的到来，各种现代信息技术为广播电视行业带来了许多新的机遇，如个性化推荐、智能化分析等，也提供了更多的数据来源和更强的数据处理能力，这使广播电视节目的制作、播出和观众反馈等都能得到更好的优化和改进。但是，这也使人们获取媒体内容、实时信息的渠道发生了巨大的变化，媒体内容的传播也变得更加容易和广泛，给传统的广播电视播出模式带来了新的竞争压力，网络安全、网络监管等问题也成为广播电视安全播出的重点考量因素。基于大数据的广播电视安全播出技术的类型以及影响其安全播出的因素等，文中提出了保障其安全播出的路径，以提高广播电视行业的服务质量和用户体验。     

电视播出系统的网络信息与数据安全

电视播出系统在电视台中具有至关重要的影响,不仅是汇集电视台内、外信号的中枢神经,同时也具有发送电视节目的重要作用.因此,必须保证电视播出系统的稳定性和安全性.通过对电视播出系统网络信息与数据安全进行研究分析,希望能够与各台技术人员一起讨论,以此提高应急处理能力.     

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。     

广电制播数据高清化传输平台的构建

在电视节目高清化的大背景下,电视台的视频节目内容正向高质量、多样化转变。盐城广电制播数据安全传输平台是应全台高清化下台内网络高效互联互通需求而建设的。平台采用全新技术体系架构,保证网络之间数据文件的高效传输与文件传输的无毒、安全、完整。主要讨论关于盐城台制播数据安全平台的构建和功能。     

江阴广电中心大型演播室音源及传声器的选型与应用

结合江阴广电中心大型演播室电声系统设计的实际,对系统中前端的音源、有线传声器、无线传声器、无线接收机及天线、混音器等设备进行了具体品牌、型号的选择,并对其功能参数进行了描述,介绍了这些设备的智能化控制及应用中的相关注意点。     

Development of Interactive Data Broadcasting System Compliant with ATSC Standards

In this paper, we present an interactive data broadcasting system compliant with the Advanced Television Systems Committee (ATSC) standards. The proposed system provides users not only with various data broadcasting services but also remote interactive services. For various data broadcasting services, we have adopted a synchronized data injector that calculates the transmission time of synchronized data accurately and multiplexes synchronized data with the data of an MPEG‐2 audiovisual program according to the calculated transmission time. To support remote interactive services, we designed and implemented a return channel server connected on a bi‐directional interaction channel. Test results show that the proposed system provides both an asynchronous and synchronized data broadcasting service and remote interactive service appropriately.     

广播电视台全媒体交互式直播演播室的构建探讨

科技水平的不断提升对传统的电视节目提出了全新的要求,广播电视台需要借助现代信息技术,整合信息资源,打造多角度、一体化的综合性交互式演播室,为受众提供优质的电视节目。     

数字电视与广电产业发展

数字化是一场全世界范围的新技术革命。是广播电视发展的必然趋势。2003年初，广电总局提出发展数字电视：先有线、后直播卫星、再地面无线的“三步走”战略。并要求：2010年全部实现数字地面电视广播；2015年关闭模拟电视。然而。发展空间的缩小、矛盾日益突出、竟争压力增大、产业化水平低却是广电的严峻现实。能否抓住这一难得的历史机遇。实现广电产业再一次的飞速发展，则关键在于我们对数字化的理解和认识。一旦广电部门破除了自身体制的束缚。透彻理解了数字电视的发展趋势、科学地掌握了数字电视的开发与运营模式、逐渐建立起一整套符合市场经济特点的现代企业运行管理机制，那么中国的广电产业很有可能在不久的将来积土成山、积水成渊，成为未来12年我国发展最快、变化最大的国民经济支柱性产业。     

交互电视技术

介绍交互电视技术的发展现状与关键技术,指出交互电视在智能小区的应用与发展趋势.     

Television Broadcasting and the Wired City

Communication by broadcasting, although most effective in terms of broad area coverage at relatively low cost, is subject to reception interference which is often uncontrollable. In heavily populated urban areas these severe and changing interference problems, as well as limited electromagnetic spectrum, are inherent to the environment. Communication by wire, a point-to-point coverage independent of the electromagnetic spectrum, presents a solution to these problems. The communications engineering community is encouraged to develop transmission standards for the wired system that are compatible with broadcast transmission standards, and transmission testing for wired systems is reviewed.     

Digital Television Broadcasting in Brazil

With the broad penetration of television in Brazil, the country's adoption of a new broadcast digital television standard is important technologically and economically. Already the biggest market in South America, the switch to digital television is expected have a fiscal impact on the order of $100 billion. The International System for Digital television (ISDTV) standard was inaugurated in December 2007. ISDTV was selected from today's best-known individual technologies for video and audio coding, transport and channel coding and modulation. The transmission of ISDTV signals has started in Sao Paulo and rollout will continue across the country through 2013. Other countries across South America are also considering adoption of ISDTV.     

CBS-KNXT Hollywood Television Broadcasting Center

The new television broadcasting center for the Los Angeles area incorporates many new engineering developments to improve technical quality, increase reliability and simplify operation. Equipment includes a digital computer, for automatic control of switching of audio and video program material, and highly stable vidicon film cameras which require a minimum of operating adjustment. The facilities employ many innovations in plant layout, system design and installation practices. The video and audio facilities are described and the philosophy which led to the designs is set forth, with emphasis on the methods and features which are new.     

Television Broadcasting at Microwave Frequencies

Over 125 Multipoint Distribution Service (MDS) transmitting stations have been constructed over the past seven years. Each of these stations is equivalent to a low power television broadcast station operating on a microwave frequency at approximately 2,150 MHz. The problems encountered in the design and construction of an MDS station differ markedly from a VHF or UHF television station. The propagation characteristics, likewise, are significantly different than for either UHF or VHF frequencies. The solution to the problem of effective coverage and reception throughout a service area requires innovative designs and techniques, and these are described.     

广播电视发射机房自动播控系统

介绍了一种由单片机和个人计算机组成的发射机房自动播控系统,充分利用单片机造价低且稳定可靠,个人计算机数据处理能力强、操作大众化等优点,构建了抗干扰能力强、稳定可靠的自动播控系统.     

基于广电SDH网络的数据业务专网

介绍了利用SDH网传输数据业务的优势及其传输机理,用泰州建行系统实例论述了基于广电SDH网的数据业务专网的构成及在泰州市的应用,并探讨了相关技术.     

声音和电视广播新技术

本文就４个方面介绍了声音和电视广播新技术：１现行声音和电视广播的功能增强和性能改进；２数字技术在声音和电视广播中的应用；３卫星广播和节目传送；４ＰＣ机应用，多媒体和ＩＳＤＢ。     

广播电视多频道合成器的设计

为了解决发射塔资源短缺问题,可采用调频和电视多频道共塔技术。调频和电视多频道共塔技术中的关键设备是多频道合成器。多频道合成器设计是否合理,直接影响到整个系统的性能。探讨多频道合成器基本部件以及几种典型的结构对技术指标的影响以及改进方法。