长期以来,电视节目、资料的存储一直采用磁带存储的方式。众所周知,尽管把磁带保管在温度、湿度和空间净化程度都有严格控制的仓库里,但时间稍长,也难免出现坏带现象。更何况不少单位还不具备这样的存储环境。这种由于坏带所造成的损失,往往是难以挽回的。近两年,有人曾经尝试用VCD光盘保存节目,可由于VCD的视频质量达不到广播级的要求而不被广泛采用。 For a long time, television programs, data storage has been the use of tape storage. It is well-known that although the tapes are stored in tightly controlled storage facilities where the temperature, humidity and space are purified, the tapes are inevitable for a longer period of time. Not to mention many units do not have such a storage environment. This loss caused by the bad belt is often irreparable. In the past two years, some people have tried to save the program with a VCD disc, which can not be widely adopted because the video quality of the VCD can not reach the broadcast level.