Super Audio CD
China Video Disc
Video Single Disc
DVD-R DL (Dual
Layer) (Also Known as DVD-R9) is a derivative of
the DVD-R format standard. DVD-R DL discs employ two recordable dye
layers, each capable of storing nearly the 4.7 GB (4.38 GiB) of a
single-layer disc, almost doubling the total disc capacity to 8.54 GB
(7.96 GiB). Discs can be read in many DVD devices (older units are less
compatible) and can only be written using DVD-RW DL compatible
DVD-R DL has compatibility
issues with legacy DVD-ROM drives known as pickup head overrun. To avoid
this issue, the two layers of the disc need to be equally recorded. But
this is a contradiction with the sequential nature of the DVD recording.
Thus DVD Forum under Pioneer's lead developed a technology known as Layer
Jump Recording (LJR), which incrementally record smaller sections of each
layer to maintain compatibility with DVD-ROM drives.
Wikipedia information about
DVD-R DL. This article is licensed under the GNU Free Documentation License . It uses material
from the Wikipedia article 'DVD-R DL'
© Copyright disc-formats.guidechart.com 2008, All rights reserved.