Datasheet

BD-Video
1 disc
DVD
5 discs
CD
35 discs
Compression methods
Maximum data transfer rate
Resolution and frame rate
MPEG-2
MPEG-4 AVC
SMPTE VC-1
48 Mbps
1920 x 1080 59.94i, 50i, 23.976p, 24p
1440 x 1080* 59.94i, 50i, 23.976p, 24p
1280 x 720 59.94p, 50p, 23.976p, 24p
720 x 480 59.94i
720 x 576 50i
BD-ROM Video Formats
C
L R
RSLS
LB RB
SW
*AVC/VC-1 only
What's a Blu-ray Disc?
The Blu-ray Disc (BD) is a next-generation optical disc format for storing a large amount of data using a
short wavelength blue laser to read and write. Like DVD, there are a number of BD standards, such as
read-only BD-ROM, recordable BD-R and rewritable BD-RE.
The single largest feature of BD is its high-density data storage capacity of 25 GB
#
per layer on one side.
This lets you store many hours of content, such as movies with HD resolution and high-quality music with
loss-less audio compression. BD also features a high-performance interactive function that uses Java™,
called BD-J, to deliver a new video experience to users not offered by conventional video media. With many
motion picture production companies and electronics, PC and gaming manufacturers expressing their
support for BD, new hardware and software products are expected to hit the market soon.
Java™ and all Java-based trademarks and logos are trademarks or registered trademarks of Sun Microsystems, Inc. in the United States and other countries.
S t r u c t u r e o f t h e B D - V i d e o D i s c
The Blu-ray Disc is an optical disc with the same dimensions as the DVD disc: 12 cm in diameter and 1.2 mm in
thickness. By using a combination of the 405-nm-wavelength blue-violet laser, which is a shorter wavelength than
the red laser used by DVD, and a high-density objective lens with a numerical aperture of 0.85, BD uses a laser beam
spot that is only about 1/5 the size used by DVD. Thanks to these technologies, a single-layer BD-Video disc can store
five times more data than a DVD disc.
650nm
0.6
120mm
1.2mm
0.6mm
0.74µm
4.7GB
#
8.5GB
#
10.08Mbps
Laser Wavelength
Numerical Aperture (NA)
Disc Diameter
Disc Thichness
Protection Layer
Track Pitch
Capacity (Single-layer)
Capacity (Dual-layer)
Data Transfer Rate
405nm
0.85
120mm
1.2mm
0.1mm
0.32µm
25GB
#
50GB
#
48Mbps
DVD
BD-Video Disc
1.2 mm
0.6 mm
100%
19%
DVD(4.7GB)
BD-Video(25GB)
Lens numerical aperture: 0.6
Laser wavelength: 650 nm
Lens numerical aperture: 0.85
Laser wavelength: 405 nm
Substrate
Substrate
Minimum pit length
0.4 µm
Track pitch 0.74 µm
Recording layer
Track pitch 0.32 µm
Optical spot area ratio
Cover layer
0.1 mm
Minimum
mark length
0.149 µm
# 1GB=1 billion bytes. Useable capacity will be less.
B e n e f i t s o f t h e B D - V i d e o D i s c
1. One Single-Layer Disc Equals Five DVDs in Data
Capacity
The BD-Video disc boasts a data storage capacity of 25
GB
#
in a single layer and 50GB
#
in dual layer, because
it uses the shorter wavelength blue-violet laser and a
high-density objective lens to enable higher-density
data reading. When a multi-layer system is adopted in
the future, the storage capacity can increase to 100 GB
#
and even 200 GB
#
. One BD-Video disc can store a huge
amount of data so users can enjoy many hours of high-
definition content and high-quality surround sound that
could not previously be provided by other media.
2. HD Image Quality Video
In addition to the MPEG-2 format used by DVD-Video,
the BD-Video disc uses video codes, such as MPEG-4
AVC and VC-1, which deliver high image quality using
high compression rates. The data transfer speed is 48
Mbps, which is about five times faster than DVD. A future
plan also calls for a further increase in the data transfer
speed. These technologies allow long-time playback of
content with high-definition image quality.
3. High-Quality Surround Sound
The BD-Video disc optionally supports next-generation surround sound formats like
Dolby Digital Plus. Connecting a BD-Video player to an AV center using an HDMI*
cable enables linear PCM multi-channel data transfer. This makes it possible to
reproduce high-quality 7.1-channel surround sound with each channel offering
DVD-Audio quality, delivering a surround sound experience that rivals the quality of
the master audio source.
* HDMI Ver. 1.1 and newer.
4. BD-J for Extensive Interactive Functions
Some BD-Video disc is equipped with an extended function
based on Java™ technology, called BD-J, to provide various
interactive features. For example, this can be used to
program various operations, such as displaying a pop-up
menu while playing a BD-Video disc, and activating a
keyword search. With unlimited application possibilities,
BD-J offers interactive enjoyment that is simply not
possible with conventional AV software.
Java™ and all Java-based trademarks and logos are trademarks or registered
trademarks of Sun Microsystems, Inc. in the United States and other countries.
5. Extensive Support for Both Hardware and Software
The Blu-ray Disc specifications have been established mainly
by leading electronics, PC and gaming manufacturers around
the world, including Panasonic. These companies will support
BD promotion by introducing a variety of hardware. A number
of major motion picture production companies have expressed
their support. A variety of software can be expected to hit the
market before long.
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