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PC applications for BD
Consult the 2006 HDTV Technology Report.
Discs
Although both formats have done development efforts to provide multiple layer and
hybrid solutions of 15GB, 30GB and 45GB from HD DVD, and 25/50/100 from Bluray,
initially HD-DVD will become available in 15GB and 30GB versions and hybrid
discs (HD and DVD versions of same movie), and Blu-ray in the 25GB and 50 GB
versions, hybrid discs might arrive later.
Toshiba 38.5 GB hybrid disc is dual sided, 30 GB HD dual layer (15GB each layer) in
one side for blue laser HD DVD, 8.5 GB on the other side for dual layer DVD version
(4.7 GB each layer) readable with red laser.
The announced HD DVD 45 GB is a triple layer single sided blue laser-disc. The
current 15 GB and 30 GB are also single sided, the 30 GB is a dual layer.
TDK announced that they have developed a 4-layer Blu-ray disc that is capable to
store up to 100 GB, sufficient for holding four HD movies, and the company demo
the prototype since CES 2006. The disc records at 72 Mbps, double the 36MBps of
Blu-ray, has special recording materials, and was able to perform at 6x speeds (216
Mbps) with prototype discs. TDK also developed DURABIS, a hard coating
technology to protect the Blu-ray disc surface of scratches and fingerprints, to a level
equivalent to 100 times better than an unprotected disc.
TDK discs will be available as 25GB BD-R
(single-layer write-once), 25GB BD-RE
(single layer, rewritable), 50GB BD-R
(double layer, write-once), and 50GB BD-RE
(double layer, rewritable).
Sony BD discs for recording featuring
AccuCORE scratch-guard protection, were
planned for release by summer starting
with single layer R and RE, dual layer 50GB
will follow. Regarding BD-ROM movies,
Sony released 20 titles for the player’s
launch.
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