质检工作标准先行 光盘产业需要标准化

Standard required first before quality inspection activity and optical storage industry needs to be standardized

DVD刻录机在刻入信号的过程中,经过一系列的A/D转化、压缩、解压缩以及D/A转换的过程,必然会导致刻录信号质量上的衰减。为了更好的控制DVD刻录机产品质量,提高产品的品质,对原始刻录信号和播放出的信号之间的损耗进行测量是非常有必要的。

During the recording process of DVD recorders,the signals will be degraded inevitably after a series of operations such as A/D conversion,compression,decompression and D/A conversion. In order to get better production quality,it is necessary to measure the loss between original and playback signals.