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从1999年中央电视台开始拍摄高清晰度电视节目至今已经有三年多了,在这期间我参与了许多部高清晰度电视节目的音频制作,其中包括几部专题类节目。五十年国庆高清现场录播工作及戏曲节目的专场录像等。2001年广电总局计划在中央电视台实施高清晰度电视试点工程项目,我作为音频方面的项目负责人参与了该项目的研讨与音频前后期机房的设计与论证,通过这些工作探索出了一些关于高清晰度电视节目制作与音频技术方面的经验与观点,希望它们能对今后高清晰度电视声音的制作与发展能有一些帮助。 相似文献
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为全面推进中央电视台高清晰度电视发展进程,12月5日,中央电视台台总编室和技术系统在梅地亚中心联合召开了“2004年高清晰度电视节目制作通报会”,就明年的高清晰度电视节目制作和技术事业发展进行动员和布置。 相似文献
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中央电视台从建国50周年庆典开始试验播出高清晰度电视,现在每晚播出2小时。由于缺少高清晰度电视节目,播出的内容主要是把现有的标准清晰度节目上变换为高清格式播出。根据广电总局2010年事业发展计划纲要中关于“2003年将在大城市开播数字(高清晰度)电视,推进数字高清晰度电视节目制作,做好节目储备和人材培训工作”的要求,中央电视台在2002年末建成了400平米数字高清晰度电视演播室,这是中央电视台建设的第一个高清晰度电视演播室,在全国也是首例。该演播室可以同时录制高清晰度和标准清晰度电视节目,按照“立足现有栏目录制播出,贮备高… 相似文献
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2005年3月,在国际会议中心的报告大厅里,来自政府部门、影视机构、国内外运营公司和设备厂家的代表为与会者描绘了高清晰度电视发展的美好前景,并展示出其正在蓬勃兴起的良好势头,从目前美国、欧洲、日本高清晰度电视节目制作播出的时间百分比、应用领域,从市场运营模式、接收条件、以及设备技术性价比的提高情况,从国内高清晰度节目制作量,数字节目平台、传输收看模式的建立及发展, 相似文献
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国家广电总局在《广播影视科技“十五”计划和2010年远景规划》中指出:“建立高清晰度电视节目制作示范工程研究中心,研究高清晰度电视节目的制作工艺与技术,为高清晰度电视的试验与播出提供节目源。……”在我国,数字高清晰度电视系统已被列为国家重大科研产业工程项目,是国家确立的“十五”期间重点组织实施的高技术建设工程之一。但是我国开播HDTV节目还面临很多问题,如关于数字有线电视和地面广播的标准尚待完善;我国已经现有约3.7亿台模拟接收机,国内年产三千万台普通电视机的生产能力还在旺盛时期,如何避免过大的冲击等。尤其是高投… 相似文献
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The authors describe the characteristics, of the 1125/60 high-definition television (HDTV) standard and the applications of HDTV, which differ from those of conventional television. They discuss the importance of a worldwide unified studio standard. They describe the development of the 1125/60 standard and efforts to establish it as an international standard. The authors examine the status and future of HDTV as regards equipment, program production, and utilization 相似文献
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《Communications Magazine, IEEE》1991,29(8):42-45
Currently available Sony high-definition television (HDTV) products for program production are examined. These include cameras, a digital HD recorder, a 1/2-in videocassette recorder, optical disk playback equipment, a digital HD frame recorder, an HD downconverter, large screen reference monitors, and an electron beam recorder. Some HDTV equipment from other manufacturers is briefly described 相似文献
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提出并分析了平台构建与高效运作的具体方法,阐述了在高清节目制作过程中需解决的几个关键技术环节,并对系统存在的不足和改进措施作了探讨. 相似文献
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We examine the subjective and objective performance of HDTV coded using the MPEG-2 video coding standard. Tests were conducted on seven HDTV sequences selected to cover a broad range of program materials in terms of scene content, complexity, motion speed and direction. The selected material was digitized in a 4:2:2 format with HDTV resolution and coded using the MPEG-2 main profile/high level syntax. Formal subjective assessment was performed by non-expert viewers on the sequences coded at a bit rate of 18 Mbits/s. Since MPEG-2 allows a great flexibility at the encoding end, we also examined the impact of various MPEG-2 encoding parameters on the quality of the reconstructed HDTV video sequences. The parameters include bit rate, the structure of picture organization, as well as temporal processing 相似文献
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This paper presents an economically attractive system for the hierarchical evolution of High Definition Television (HDTV) compatible with the NTSC installed base. It describes the two main signals of this system: HDMAC-60 and HDNTSC. The first, HDMAC-60, is a feeder signal for use between the program origination and program redistribution points, and used also as a DBS emission format. The second, HDNTSC, is a delivery signal for high definition terrestrial broadcast, CATV distribution and VCR plus laser video disc applications. We propose this emission system as a means for transmitting HDTV pictures to consumers on the North American continent. 相似文献
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《Broadcasting, IEEE Transactions on》1987,(4):170-183
During the last few years there has been increasing interest in the use of high-definition television (RDTV) equipment to reduce costs in programme production. It is also clear that the wider aspect-ratio of HDTV, and the absence of picture impairments, would be very attractive to many consumers if delivered at the right price. In fact, it is not unreasonable to suggest that a successful system for the delivery of HDTV to the public could both differentiate and enhance the value-of the programming supplied, and give rise to the next generation of consumer TV sets. Moreover, the opportunity for HDTV distribution extends beyond broadcast and cable technologies to VCR tape and video disc. Therefore the possibility exists that these distribution industries might be bypassed unless a practical HDTV signal format is devised. 相似文献
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数字HDTV TS流无缝拼接技术研究 总被引:2,自引:0,他引:2
针对两个不同数字HDTV TS节目流播放切换时产生短暂的黑屏进行研究。提出了调整第二个数字HDTV TS节目流解码、显示时间,使它解码、显示时间同第一个节目流解码、显示时间连续;调整拼接点处ES流码率,防止EB1缓冲区下溢两种方法来实现两个不同数字HDTV TS流的无缝拼接,除去了两个流一起播放时产生的黑屏现象。 相似文献
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介绍了用于高清晰度电视(HDTV)接收机芯片中的视频后处理屏幕显示单元,实现了在监控系统中加入屏幕显示信息(包括节目表、节目信息、频道选择信息等),重点介绍了实现该功能的硬件设计。 相似文献