DVD 的全称是 Digital Versatile Disk,即数字多用途光盘。它可以分为单面单层、单面双层、双面单层和双面双层四种物理结构,被命名为 DVD-5、DVD-9、DVD-10和 DVD-18。这四种不同规格的 DVD 容量分别为4.7GB、8.5GB、9.4GB 和17GB。即...DVD 的全称是 Digital Versatile Disk,即数字多用途光盘。它可以分为单面单层、单面双层、双面单层和双面双层四种物理结构,被命名为 DVD-5、DVD-9、DVD-10和 DVD-18。这四种不同规格的 DVD 容量分别为4.7GB、8.5GB、9.4GB 和17GB。即使按照容量最小的 DVD-5规格来算,4.7GB 的数据存储容量也是普通 CD-R 的7倍多。因此,目前很多用户都会选择一款 DVD 刻录机作为数据、影像备份的工具。展开更多
The focus of this article is the L0/L1-layer shift of the two half discs L0 and L1,its role for the playability of DVD9 discs and the determination of the layer shift and the eccentricity.Firstly three different appro...The focus of this article is the L0/L1-layer shift of the two half discs L0 and L1,its role for the playability of DVD9 discs and the determination of the layer shift and the eccentricity.Firstly three different approaches for measuring the eccentricity are presented.Then,it is discussed,how to obtain the layer shift from counting tracks or from using a new method introduced by ETA-Optik.展开更多
文摘The focus of this article is the L0/L1-layer shift of the two half discs L0 and L1,its role for the playability of DVD9 discs and the determination of the layer shift and the eccentricity.Firstly three different approaches for measuring the eccentricity are presented.Then,it is discussed,how to obtain the layer shift from counting tracks or from using a new method introduced by ETA-Optik.
