新时代下电视图文包装理念的变革

在当今信息爆炸和多媒体激烈竞争的时代,电视媒体必须在最短的时间内将海量的图文信息发布出去,并利用新颖的电视图文包装形式,来吸引更多观众的眼球。从20年前电视媒体人利用传统的线性字幕机设备,为电视画面添加简单的图文字幕,到如今将海量的图文信息通过更为丰富绚丽的数字化在线包装手段进行更好的信息传达与品牌塑造,已经成为电视节     

论电视图文编辑艺术的创造

1　问题的提出电视图文编辑艺术是电视从业人员综合编辑素质的体现。因此 ,作为一个电视人 ,要创造电视图文编辑艺术 ,就必须努力提高自己的综合素质。电视从业人员的综合编辑素质包括图文编辑审美观、图文编辑审美修养、图文编辑专业知识、图文编辑技能以及图文编辑情感等基本内容。2　电视图文编辑艺术创造的前提 :图文编辑审美观和审美修养电视图文编辑艺术的创造是编辑根据一定的图文编辑审美观 ,按照美的规律而进行的一种创造美的自觉和自由的活动。编辑在电视图文编辑艺术创造活动中的一切思想和情感活动 ,都受图文编辑审美观的制约。…     

虚拟现实图文在新闻节目中的应用

本文分析了虚拟现实图文包装系统的应用背景,介绍了沈阳电视台400演播室的演播空间设计情况,列举了节目创作结合虚拟图文应用的绚丽融合效果,探讨了虚拟现实图文未来的应用趋势。     

三维图文技术分析

本文通过对三维图文最新技术的详细讲述,阐明了三维图文对电视图文包装手段的本质上的技术变革。并介绍了目前国内外具有自主技术的三家公司的产品。     

图文影视播出系统

图文影视播出系统石家庄有线电视台郑海鹰，陈晓勇石家庄有线广播电视台于１９９４年１２月２５日新增加了一套图文影视频道，目前已开通了２０套节目。“图文影视电视”区别于普通电视之处，在于它将以往只能容纳一个节目内容的电视画面通过技术手段分割为几个区域，而几...     

2007国家火炬计划传捷报 新奥特两项目成功入围

新年初始,新奥特科技项目传佳讯。多媒体内容生产业务协同集成平台、电视图文创作制播系统两大项目成为2007年国家火炬计划立项项目。     

新奥特两项目成功入围2007国家火炬计划

新年初始，新奥特科技项目又传佳讯．多媒体内容生产业务协同集成平台、电视图文创作制播系统两大项目成为2007年国家火炬计划立项项目。     

虚拟图文的三维电视应用

本文主要立足于三维电视发展与图文技术相结合的应用,结合目前电视平面系统的构架,探讨立体三维电视的制作发展方向,并结合电视制作经验对图文虚拟技术进行探讨。     

谱写国产电视图文技术的新篇章

一电视图文技术的发展和业界面临的挑战电视字幕与图形技术在广播电视行业的技术发展中占有重要的地位,基于计算机技术的电视图文制作和播出设备是广电行业数字化的重要组成部分。基于计算机技术的电视图文制作和播出系统在国内外出     

新一代BHDTnet电视图文频道制播系统

1 图文频道制播系统的基本概念 图文频道严格来讲应该是电视图文信息频道,是通过电视媒体传播大量新闻、经贸、购物、广告、股市等信息的频道。 一个好的图文频道就像一份内容丰富的报纸,又像一份设计精美的杂志,但又不止于此,因为它除了文字、图片外还有动画、声音和活动视频画面。图文频道相当于一份绿色出版物,因为它接收方便,打开电视机就可收看,传播面广又勿需发行。有线电视台频道资源丰富,开办图文信息频道是可行的,也是大有作为的。     

Experimental Studies of Transmission Bit-Rate for Teletext Signal in the 525-Line Television System

In order to investigate the optimum transmission bit-rate for teletext signals in the 525-line television system, laboratory and field tests were carried out using binary NRZ digital data signals of several bit-rates to 5.73 Mbit/s ( 364fH, 8/5fsc). In these tests, the bit-errors and eye-openings of PN signals were measured and subjective evaluation of teletext signals was also made under various receiving conditions. The results have indicated that a digital data signal of 5.73 Mbit/s could be utilized for teletext in the 525-line television system. The Japanese teletext system now being developed employs this bit-rate for transmitting and displaying the signals.     

Performance evaluation of a teletext system

Four parameters are defined to measure the performance of a teletext system, namely, the probability of delivering a message within specified time, the transmission efficiency, the average number of errors per page, and the throughput. Each of them is derived and computational results are presented taking the UK teletext system as an example. These parameters are compared in their ability to characterize the performance of the teletext system     

基于可见光通信的一对多视频广播系统

利用自主研发的软硬件搭建了基于可见光通信(VLC )的一对多视频广播系统。通过传输流(TS,transport stream)音视频数据流解决了通信信道 不可靠的问题,通过广播流量控制算法和控制指令的设计解决了多媒体数据广播传输时服务 器和客户端速率不匹配带来的超大缓存需求问题。可见光收发模块采用荧光型LED和PIN探测 器作为光源和探测器。系统拥有蜂窝网络结构,每个蜂窝可以有多个用户,客户可以同时接 收广播信号且不会相互干扰。通过实验实验证了系统的可行性。测试结果表明,本文系统支 持1对多的1080P视频数据光学无线广播传输,每个用户的接收带宽为 2Mbit/s,传输距离为2m。     

Mobile teletext reception using signal processing in frequencydomain

An experimental study of mobile teletext reception is described. Teletext in Japan is a broadband signal with 5.73 Mb/s; therefore, multipath interference is a serious problem in mobile reception, and it is impossible to obtain the teletext correctly by conventional methods. A multipath reduction technique using signal processing in the frequency domain is developed. In this technique, an original chirp signal is used for reference to identify the radio propagation path. In field trials, the delay profile was precisely obtained, and the bit error rate was reduced. The error correction capability was tested in a computer simulation     

用FPGA实现图文电视中汉字显示系统

近年来图文电视得到了迅速发展。本设计是“图文电视”项目中的一个子项目,即设计图文电视中的汉字显示系统。本文简要介绍了图文电视的基本概念,详细描述了设计的基本思想和两个FPGA功能模块的具体实现。     

图文电视广播与接收技术

简述图文广播系统，较详细介绍了韶峰牌ＳＦＴＣ－１型图文电视接收机。     

接收“亚卫2号”天线定向等值线图

本文设计绘制了接收“亚卫２号”、“中星５号”的天线方位角，仰角的等值线图。     

Performance of an error correction scheme for PAL-TV teletext

The shortened (272, 190) difference set cyclic code has been adopted for the Japanese teletext system using NTSC vertical blanking periods. This system is known as BEST (burst and random error correction system for teletext) for NTSC-TV systems. A powerful error correction system adopting the (272, 190) code for PAL-TV teletext signals is described. To compare the error correction characteristics of this system to those of WST (World System Teletext), transmission experiments were carried out multiplexing both data packets with different lines during the vertical blanking period of the same TV signals. The validity of applying BEST to the PAL-TV signals was confirmed, particularly when there is ghost interference     

Analysis and implementation of error correcting double bundle ReedSolomon codes for UK teletext

The introduction of double-bundle Reed-Solomon (RS) error correcting codes in UK teletext is proposed. In order to implement this, one or two rows of parity-check bytes must be added. Single-bundle and double-bundle codes are defined. The performance of the UK teletext system is evaluated, when rows of parity-check bytes in the bundles are used and the computer simulations are described. A software written coder and decoder are described which have been tested in a laboratory environment. Results obtained from simulations and implementations are in good agreement with analytical results. The performance of the teletext system is found to be enhanced by the introduction of the RS codes     

CPLPS图文电视接收机

本文介绍了微机化图文电视接收机的系统组成,硬件结构,软件开发。在电视台开路广播试验表明。本系统制式先进,使用方便,工作稳定可靠。解码速度快,图形文字表现力强,是一种值得开发应用的设备。