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  • #34 TheVeryGuest senior tag Sutter_Cane #33
    #34
    Összes hozzászólása itt Válaszok az összes hozzászólására itt Válaszok erre a hozzászólásra
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    TheVeryGuest

    senior tag

    válasz Sutter_Cane #33 üzenetére

    Az igen.
    Kicsit utánaolvastam és még nagyobb gusztustalanságot is találtam, nevezetesen egyetlen oldalon egy DVD réteg és egy CD réteg. Persze ezeket a disc-eket úgy sac per kb vagy le lehet játszani CD lejátszóban vagy nem.

    ''A disc with two layers, one that can be read in DVD players and one that can be read in CD players. (More accurately called a legacy or CD-compatible disc.) There are at least three variations of this hybrid, although most aren't commercially available:
    A 0.9- to 1.2-mm CD substrate bonded to the back of a 0.6 mm DVD substrate. One side can be read by CD players, the other side by DVD players. The resulting disc is 0.6 mm thicker than a standard CD or DVD, which can cause problems in players with tight tolerances, such as portables. Sonopress, the first company to announce this type, calls it DVDPlus. It's colloquially known as a fat disc. There's a variation in which an 8-cm data area is embedded in a 12-cm substrate so that a label can be printed on the outer ring.
    A 0.6-mm CD substrate bonded to a semitransparent 0.6 mm DVD substrate. Both layers are read from the same side, with the CD player being required to read through the semitransparent DVD layer, causing problems with some CD players. The trick is to make the semitransparent layer ''invisible'' to 780-nm CD lasers. This is the format used for hybrid SACDs.
    A 0.6-mm CD substrate, with a special refractive coating that causes a 1.2 mm focal depth, bonded to the back of a 0.6 mm DVD substrate. One side can be read by CD players, the other side by DVD players.
    A 0.6-mm DVD substrate bonded to a CD+DVD hybrid substrate (#2 in this subsection). This disc would be readable by SACD and CD players on one side and by standard DVD players on the other (since most standard DVD players are confused by a hybrid disc with only a semitransparent layer).''

    [L]http://www.dvddemystified.com/dvdfaq.html#1.31[/L]

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