• The Category of DVD
  • 1. Category by Format

    There are mainly six formats, of which, they have format book:
    1) Book A DVD-ROM,has the functions like CD-ROM
    2) Book B DVD-Video has the functions like LD or Video CD；
    3) Book C DVD-Audio has the functions like CD；
    4) Book D DVD-R has the functions like CD-R；
    5) Book E DVD-RAM
    6) Book F DVD-RW has the functions like CD-RW

    The logo of DVD is like below:



    Tip: Now there are two kinds of use of the structure of recordable DVD disc CD-ROM: DVD + R and DVD + RW, which is DVD format developed by the League.

    2. Category by Size
    At present, DVD has two sizes: 120mm and 80mm.

    3. Category by Burning Methods
    There are pre-record and recordable DVD, of the two kinds, the recordable discs is divided into wirte once and write and erase repeatedly.

    4. Category by Record Layer

    There are five types of DVD
    a) Single side, single layer DVD-5b) Single side, double layers DVD-9
    c) Double layers, single layer DVD-10
    d) Double sides, double layers DVD-18
    e) Double sides, mixed layers DVD-14 which is the disc formed by joint the single record sidewith the double record side.

    The fowllowing is a list of different DVD and CD-ROM



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