中央广播电视总台2021年春节联欢晚会技术创新及应用

中央广播电视总台依托超高清视音频制播呈现国家重点实验室全面推进5G、4K/8K、AI、AR/VR等新技术的研发,在2021年春节联欢晚会实现了8K超高清试验频道全球首次8K直播、4K春晚上海传媒港影院同播、AI+VR裸眼3D拍摄制作及超高清VR+沉浸式三维声直播等全新应用模式,这些技术创新为电视观众和新媒体用户带来了焕然一新的视听体验。本文对整体技术创新内容进行了介绍和总结。     

融媒体创新工场系统设计及应用

湖北广播电视台融媒体创新工场系统以"MCN内容制作、电视+广播+网络内容聚合、多空间互动、AR+VR直播、高清+4K"为设计理念,兼备新媒体+传统媒体一体化制作、多信源IP化传输、全媒体发布+多屏互动,为节目生产提供多场景、多功能、高效率、低成本的创作空间,为全台融媒体节目创新和孵化提供强有力的技术支撑.     

5G在广播电视工程中的应用

5G为广播电视行业发展注入新元素,推动广播电视工程向多元化、智能化发展。基于5G概述,分析5G在广播电视工程中的优势,从广播电视转播、5G智慧电台、5G+4K/8K+VR/AR的直播模式以及5G+4K/8K+AI的融合方面探讨5G在广播电视工程中的具体应用,以期为广播电视工程行业的相关人员提供参考。     

科技博物馆应用VR/AR 技术的 特殊需求与策略

目前众多科技博物馆对虚拟现实（VR）和增强现实（AR）技术的应用持观望态度。本文运用博物馆学、 传播学、教育学的理论与方法,从科学传播的目标、资源、方式特点入手,分析科技博物馆需要什么样的AR 产品,提出基于展览及其教育活动、基于实物的体验式学习、基于实践的探究式学习的VR/AR 产品是科技博 物馆的最大需求,而目前的大多数VR/AR 产品往往游离于上述需求。并据此提出科技博物馆VR/AR 产品的 开发策略：把基于展览及其教育活动的VR/AR 产品作为“主战场”,把基于实物的体验式学习和基于科技实 践的探究式学习的VR/AR 产品作为“主攻方向”;寻找科技博物馆与VR/AR 传播特长的契合点,“扬长补短”; 根据传播目标和传播效果的要求进行VR/AR 开发;运用教育学、传播学理论与方法设计VR/AR 产品要素。     

AR/VR产业2017年能否迎来产业拐点?

要知道,在2015年、2016年市场上都有各种分析称,这将是VR/AR爆发的元年.但事实证明,几乎每一年VR/AR都是不温不火.2017年VR/AR会不会迎来拐点,主要还是看VR/AR是否解决了此前遇到的挑战.     

AR商用到来,联想抢先出手

今年的CES上,AR/VR、AI成为焦点,有多家企业展示了即将商用的AR/VR产品,业界专家认为,经过一年多的发展,AR/VR接近大规模商用,市场前景明朗化.这也可以从此次参加CES的AR/VR企业数量中看出.今年参加CES的AR/VR企业比去年增加了48％,达到70多家,展示场地也较去年扩大将近一倍.     

面向VR/AR的算力网络研究

针对现阶段VR/AR的网络环境不稳定、时延高、丢包多等问题,提出了基于算力网络资源调度的VR/AR网络环境优化方法。利用带宽、时延、抖动、丢包路径算法确定单指标网络通道,借助AHP层次分析和算力网络自愈相融合的多策略筛选,实现对最优网络通道的快速定位。构建基于算力网络的VR/AR环境稳定体系,结合用户自身需求在保障VR/AR应用稳定的基础上提升用户感知。     

5G+4K超高清转播技术在体育赛事网络直播中的研究与设计

随着5G、4K/8K、AR/VR等技术的的不断融合发展,大型体育赛事直播对低时延、大带宽、多视角的技术要求得到了有效的满足,促进了超高清转播技术的取得长足进步。文章从5G+4K超高清转播技术的技术方案、具体应用、应用效果,来探讨如何机动灵活、实用高效的进行实时交互体育赛事直播方案设计,为超高清技术创新发展,赋能5G智慧广电新应用,做出积极探索和有益实践。     

纵观AV/VR产业链,解读处理器IP及连接技术

本文邀请AR/VR行业关键厂商及领军人物,就AR/VR产业的处理器及连接技术进行了深入的解读和分析.     

江西省VR企业发展方向浅析

随着2016年,南昌打响VR产业发展"第一枪".如今VR产业已由"虚"变"实".国内备大VR龙头纷纷入赣,VR要素资源加快向江西聚集.本文围绕江西省VR产业的发展,介绍了江西省相关产业政策情况,通过江西联通VR/AR基地的项目实践经验总结,对省内VR企业如何抓住契机加速发展提出了建设性意见.     

Progress in electrophotography in Western Europe

A review is given of the progress in electrophotographic science and technology in Western Europe during the years 1967 to early 1971. University research work is mainly directed towards two areas: 1) the electrical and physical properties of photoconductors, such as selenium, chalcogenides, oxides, and organic materials; and 2) the sensitization of these photoconductors. Industrial research teams report on the preparation of electrophotographic layers on development and on image evaluation. A bibliography including scientific papers and patents published on this subject during said period completes this review.     

智能通信在楼宇自控系统中的应用

随着计算机技术、控制技术、通信技术及信息技术的飞速发展,人们对生活、办公环境安全性、舒适性的要求日渐增长,智能建筑应运而生。楼宇自动化控制系统是智能建筑的一个重要组成部分。通过结合具体的智能楼宇控制工程项目,在介绍系统概况的基础上,给出了系统的总体设计方案及子系统的监控方案,具有一定的实用价值。     

Advances in millimeter-wave subsystems in Japan

The authors describe the development trends and results of millimeter-wave systems in Japan in such fields as communication, radar, and measurement systems. The applications included are the W-40G waveguide transmission communication system, an automobile traffic control system using the 60-GHz band, a collision avoidance radar system for an automobile, a plasma electron density measuring system, and satellite communication. The authors describe the development of devices such as high-power FET amplifiers, traveling wave tube amplifiers (TWTAs), IMPATT amplifiers, low-noise amplifiers, and monolithic microwave integrated circuit (MMIC) devices used in constructing the millimeter-wave systems     

中国带电清洗技术的突破

一、电路故障的成因 通常,由于空气的污染和设备所处的环境及管理条件不同,空气中的灰尘、油污、酸碱及其气体、盐分、潮气、炭渍、金属尘埃、各种机械杂质等污染物质,不可避免地吸附在电路表面及其它部位,加之静电累积和在电场力的作用下,污秽的累积不断加重和变得牢固,各种污秽牢牢附着在线路表面,深层及各部位。灰尘、油污、酸碱及其气体、盐分、潮气、炭渍、金属尘埃、各种     

Telecommunications in Malaysia: diversity in adversity

The telecommunications industry in Malaysia has experienced a tremendous transformation in just over a decade. The government-owned Jabatan Talikom, which hitherto operated the network, was incorporated in 1987 and subsequently privatized a few years later, with a majority share holding by the government. The regulatory aspects were spun off under the slim looking JTM. This marked the beginning of liberalization, and many new players entered the fray. This article reviews the telecommunications infrastructure and services available in Malaysia and visits some of the telcos offering these services. Some pertinent issues affecting the industry are also discussed     

Losses in small-radius bends in single-mode fibres

Refractive index profiles and mode field radii determine small-radius bending losses in single-mode fibres. Losses in six different types of fibres were measured in bends with radii ranging from 1.25 to 8 mm. The results show that a refractive index depression in the core centre reduces the bending-loss sensitivity.<>     

Rearrangements in cell populations in malignant growth

It is emphasized that one of signs of malignant growth is heterogeneity of cell population which arises at the earliest pretumour stages and determines the character of tumour progression. At the same time by means of selective influences on population of malignant cells it is possible to change their quantitative correlation and to obtain rearrangement of the normal cell interrelations. Initiation of the tumour, its progression and regression are considered on the basis of the population-cell rearrangement, typical of each of them separately. The concept of the unity of the carcinogenesis and anticarcinogenesis processes is also formulated.     

General Trend in Electrical Communications in Japan

Systems are currently being designed for higher reliability and greater economy. Larger transmission capacity is required to meet a rapid increase in recent communication demands instigated by the introduction of video and information communications facilities. More flexibility, to deal with the variety of communication modes to come, and smaller hardware dimensions, to overcome situations caused by the high population density, seem to be particularly sought in the communication technology of Japan. Research and development concentrate on these objectives. The following is an explanation of the present state of the art and general trends in this country.     

Progress in display-device development in Western Europe

A review of the basic research and industrial development of display devices in Western Europe during the years 1968 to early 1973 will be given. The display types considered are: 1) active displays such as cathode ray tubes, light-emitting diodes, electroluminescence cells, and gas discharge devices, and 2) passive displays such as laser displays, light valves, and ferroelectric and liquid-crystal devices.