[hwdly] 27Gb Optical Disc Video Recording Format $BE#(Blu-ray Disc
- From: "Karl Dallas" <karldallas@xxxxxxxxxxxxxxxx>
- To: <hwdly@xxxxxxxxxxxxx>
- Date: Tue, 19 Feb 2002 19:44:29 -0000
HARDWARE DAILY
The following report is based on a release issued by a group of
companies associated with the new Blu-ray standard, which it is expected
will mainly impacty professional broadcasters.
_____
Large Capacity Optical Disc Video Recording Format $B!H(BBlu-ray Disc$B!I(B
Established
The Blu-ray Disc using blue-violet laser achieves over 2-hour digital
high definition video recording
on a 12cm diameter CD/DVD size phase change optical disc
Tokyo Japan, February 19, 2002: Nine leading companies today announced
that they have jointly established the basic specifications for a next
generation large capacity optical disc video recording format called
$B!H(BBlu-ray Disc$B!I(B. The Blu-ray Disc enables the recording,
rewriting and
play back of maximum up to 27 gigabytes (Gb) of data on a single sided
single layer 12cm CD/DVD size disc using a 405nm blue-violet laser. The
companies that established the basic specifications for the Blu-ray Disc
are: Hitachi Ltd., LG Electronics Inc., Matsushita Electric Industrial
Co., Ltd., Pioneer Corporation, Royal Philips Electronics, Samsung
Electronics Co. Ltd., Sharp Corporation, Sony Corporation, and Thomson
Multimedia. In addition to actively promoting the new format throughout
the Industry, the nine companies listed above plan to begin licensing
the new format as soon as specifications are completed., which should be
later this spring.
By employing a short wavelength blue violet laser, the Blu-ray Disc
successfully minimizes its beam spot size by making the numerical
aperture (NA) on a field lens that converges the laser 0.85. In
addition, by using a disc structure with a 0.1mm optical transmittance
protection layer, the Blu-ray Disc diminishes aberration caused by disc
tilt. This also allows for disc better readout and an increased
recording density. The Blu-ray Disc$B!G(Bs tracking pitch is reduced to
0.32um, almost half of that of a regular DVD, achieving up to 27 Gb
high-density recording on a single sided disc.
Because the Blu-ray Disc utilizes global standard $B!H(BMPEG-2 Transport
Stream$B!I(B compression technology highly compatible with digital
broadcasting for video recording, a wide range of content can be
recorded. It is possible for the Blu-ray Disc to record digital high
definition broadcasting while maintaining high quality and other data
simultaneously with video data if they are received together. In
addition, the adoption of a unique ID written on a Blu-ray Disc realizes
high quality copyright protection functions.
The Blu-ray Disc is a technology platform that can store sound and video
while maintaining high quality and also access the stored content in an
easy-to-use way. This will be important in the coming broadband era as
content distribution becomes increasingly diversified. The
nine companies involved in the announcement will respectively develop
products that take full advantage of Blu-ray Disc$B!G(Bs large capacity and
high-speed data transfer rate. They are also aiming to further enhance
the appeal of the new format through developing a larger capacity, such
as over 30Gb on a single sided single layer disc and over 50Gb on a
single sided double layer disc. Adoption of the Blu-ray Disc in a
variety of applications including PC data storage and high definition
video software is being considered.
$B!H(BBlu-ray Disc$B!I(B Key Characteristics
1) Large recording capacity maximum up to 27Gb:
By adopting a 405nm blue-violet semiconductor laser, with a 0.85NA field
lens and a 0.1mm optical transmittance protection disc layer structure,
it can record maximum up to 27Gb video data on a single sided 12cm phase
change disc. It can record over 2 hours of digital high definition
video and more than 13 hours of standard TV broadcasting (VHS/standard
definition picture quality, 3.8Mbps)
2) High-speed data transfer rate 36Mbps:
It is possible for the Blu-ray Disc to record digital high definition
broadcasts or high definition images from a digital video camera while
maintaining the original picture quality. In addition, by fully
utilizing an optical disc$B!G(Bs random accessing functions, it is possible
to easily edit video data captured on a video camera or play back
pre-recorded video on the disc while simultaneously recording images
being broadcast on TV.
3) Easy to use disc cartridge:
An easy to use optical disc cartridge protects the optical disc$B!G(Bs
recording and playback phase from dust and fingerprints.
Main Specifications
Recording capacity: 23.3Gb/25Gb/27Gb
Laser wavelength: 405nm
(blue-violet laser)
Lens numerical aperture (NA): 0.85
Data transfer rate: 36Mbps
Disc diameter: 120mm
Disc thickness: 1.2mm (optical
transmittance protection layer: 0.1mm)
Recording format: Phase change
recording
Tracking format: Groove recording
Tracking pitch: 0.32um
Shortest pit length:
0.160/0.149/0.138um
Recording phase density: 16.8/18.0/19.5Gbit/inch2
Video recording format: MPEG2 video
Audio recording format: AC3, MPEG1, Layer2, etc.
Video and audio multiplexing format: MPEG2 transport stream
Cartridge dimension: Approximately 129 x 131 x 7mm
Contacts for inquiries regarding Blu-ray Disc licensing, etc.:
Matsushita Electric Industrial Co., Ltd.
Isamu Takai, General Manager of Storage Device Business Development
Office
Tel: +81-6-6905-4195
Email: takai@xxxxxxxxxxxxxxxxx
Royal Philips Electronics
Chris Buma, Program Manager A/V, Philips Consumer Electronics
Tel: 31-40-273-6341
Email: Chris.Buma@xxxxxxxxxxx
Sony Corporation
Fumihiko Moriya, General Manager of Licensing Department
Tel: +81-3-5448-2017
Email: info-Blu-ray_Disc@xxxxxxxxxx
Press Contacts:
Hitachi, Ltd.
Hirohiko Kudoh
Tel: +81-3-3506-1627
Email: <mailto:hkudoh@xxxxxxxxxxxxxxxxxxxxxx>
hkudoh@xxxxxxxxxxxxxxxxxxxxxx
LG Electronics Inc.
Sung-Hwan Kim
Tel: +82-2-526-4739
Fax: +82-2-3461-2735
Email: <mailto:kshwan@xxxxxxx> kshwan@xxxxxxx
Matsushita Electric Industrial Co., Ltd.
Akira Kadota
Tel: +81 3 3578 1237
Email: <mailto:kadota@xxxxxxxxxxxxx> kadota@xxxxxxxxxxxxx
Matsushita Electric Corporation of America
Joe Tsuchiya
Tel: +1 201 271 3297
Email: <mailto:tsuchiyaj@xxxxxxxxxxxxx> tsuchiyaj@xxxxxxxxxxxxx
Matsushita News Centre Europe
Brendon Gore
Tel: +44 20 8899 2216
Email: brendon.gore@xxxxxxxxxxxxxxxxxxxxx
Pioneer Corporation
Makoto Kuzuhara
Tel: +81-3-3495-9885
Email: makoto_kuzuhara@xxxxxxxxxxxxxxxxxx
Royal Philips Electronics Japan
Kazuko Suzuki
Tel.: +81-3-3740-5221
Email: <mailto:Kazuko.Suzuki@xxxxxxxxxxx> Kazuko.Suzuki@xxxxxxxxxxx
Royal Philips Electronics International
Jeannet Harpe
Tel +31-40-27-35677
Email: <mailto:Jeannet.Harpe@xxxxxxxxxxx> Jeannet.Harpe@xxxxxxxxxxx
Samsung Japan Corporation
Sung-Ha Im
Tel: +81-3-5641-9857
Email: lsh8124@xxxxxxxxxxxxx
Sharp Corporation
Masami Nishimura
$B#T#e#l(B:+81-6-6625-3006
Email: nishimura.masami@xxxxxxxxxxx$B!!(B
Sony Corporation
Aki Shimazu
Tel: +81-3-5448-2200
Email: aki.shimazu@xxxxxxxxxxx
Thomson Multimedia
Toshihiko Gotoh
Tel: +81-3-3234-4646
Email: gotoht@xxxxxxx
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