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１引言１９９８年的国际广播会议（ＩＢＣ＇９８）再一次证明在电视制作与分配领域信息技术势不可挡，这是因为其不断增加的性能和不断降低的价格。越来越多的用途已被挖掘出来，不仅在管理数据处理方面，而且也在经典的视频技术领域——声像录制、编辑、分配和归档保存。非线
1 Introduction The 1998 International Broadcasting Conference (IBC’98) once again proved overwhelming for information technology in the field of television production and distribution due to its ever-increasing performance and decreasing prices. More and more uses have been uncovered, not only in the management of data processing, but also in the field of classic video technology - audio and video recording, editing, distribution and archiving preservation. Non-linear