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电视台中应用的图像记录媒体,长年来利用的是录像磁带。最近,随着记录器件价格的下降和存储容量的增加,出现了使用此类记录器件组成记录、编辑系统的所谓非线性编辑机。 非线性编辑的记录媒体有光磁盘、硬盘机半导体存储器等。随着高密度化技术的发展,它们可以实现长时间记录;此外,记录与重放能独立进行。这样,可做到记录、编辑和播出一体化,从而成为当今编辑系统的发展热门,并将在下一世纪中成为广播电视系统的主体。 本专题讲座为适应数字广播时代的到来,就非线性编辑系统的现状、作为其构成成分的存储媒体、数据压缩中的压缩技术、以及后期制作上的应用等,分为若干讲予以介绍。
Image recording media used in television stations have for many years been video tapes. Recently, as recording device prices have fallen and storage capacity has increased, so-called non-linear editing machines have emerged that make up recording and editing systems using such recording devices. Non-linear editing of recording media optical disk, hard drive semiconductor memory. With the development of high-density technology, they can achieve long-term record; In addition, recording and playback can be carried out independently. In this way, the integration of recording, editing and broadcasting can be achieved, which has become a hot development in today’s editing system and will become the main body of the radio and television system in the next century. In order to adapt to the advent of the digital broadcasting era, this lecture introduces the status quo of non-linear editing systems, storage media as its components, compression technology in data compression, and post-production applications.