• Structure of DVD
  • DVD and CD are almost the same on surface, but they are difference inside.Assembled by sigle side/double side and single layer/double layer, DVD can be devided in to four basic physical structures: single side single layer, single side double layers, double-side, single-layer, double-side double layers. Single-sided DVD disc may have one or two recording layer. Like with the CD, CD-ROM laser from reading the following data on a single disc, double-sided DVD, the data were stored in the disc up and down both sides.

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