Transcript
Blu-ray DiscBlu-ray Disc
Presented by:Swati Dangi
HISTORY OF CDHISTORY OF CD
HISTORY OF DVDHISTORY OF DVD
HISTORY OF BD(Blu-ray HISTORY OF BD(Blu-ray Disc)Disc)
CORRECT NAMECORRECT NAME
Blu-ray Disc NOT Blue-ray Disc Blu-Ray Disc
INTRODUCTION OF BDINTRODUCTION OF BDWhy the name Blu-ray ?Who developed Blu-ray ?Is Blu-ray the same thing as HD-
DVD ?
FoundationFoundationBlu-ray disc (BD) is appropriately
named after the blue laser used to write the data.
The first blue laser was developed in 1996 by Shuji Nakamura (Nichia Corporation).
In 2002, an alliance was formed, called the Blu-ray Disc Association, including the likes of Sony, Samsung, Sharp, Hewlett-Packard, and Royal Phillips.
The “e” is intentionally left out of the name due to trademark restrictions.
SpecificationsSpecificationsAbout 9 hours of high-definition (HD)
video can be stored on a 50 GB disc. About 23 hours of standard-
definition (SD) video can be stored on a 50 GB disc.
TDK recently announced that they have created a working experimental Blu-ray disc capable of holding 200 GB of data on a single side (six 33 GB data layers).
SpecificationsSpecifications
Physical size
Single layer capacity
Dual layer capacity
12 cm, single sided
25 GB (23.3 GiB)
50 GB (46.6 GiB)
12 cm, double sided
50 GB (46.6 GiB)
100 GB (93.2 GiB)
8 cm, single sided
7.8 GB (7.3 GiB)
15.6 GB (14.5 GiB)
8 cm, double sided
15.6 GB (14.5 GiB)
31.2 GB (29 GiB)
Disc CharacteristicsDisc Characteristics The power
conservation allows the development of multi-layer platforms and high-speed recording.
BD-ROM: read-only format
BD-R and BD-RE: recordable formats (RE: rewritable; R: recordable once)
Courtesy Blu-ray Disc Founders “Blu-ray Disc Format White Paper”
Recorder CharacteristicsRecorder CharacteristicsOver two hours of HDTV can be placed on
a single layer BD, which correlates to over 13 hours for standard TV
The transfer rate is 36 megabits per second
At 1x speed, it takes approximately 1.5 hours to record an entire single layer BD
Recorder Cost: $1,500 - $2,500; BD Cost: $26
Expected to be available in the U.S. by 2006
Software Standards Software Standards FollowedFollowedCodecs:Codecs are compression
schemes that can be used to store audio and video information on a disc.
For Video:MPEG-2,H 264/AVC & VC-1.
For audio,:BD-ROM players are required to support Dolby Digital and DTS
Software Standards Software Standards FollowedFollowedSun Microsystems' Java cross-platform software environment (version BD-J)is included in all Blu-ray players as a mandatory part of the standard
To implement interactive menus on Blu-ray discs,updates to Blu-ray discs via the Internet, adding content such as additional subtitle languages and promotional features that are not included on the disc at pressing time.
Region CodesRegion Codes
Region code
Area
A/1North America, South America,
East Asia except for China
B/2 Europe and Africa
C/3China, Middle East, Russia, and
South Asia.
Digital Rights Digital Rights ManagementManagement
BD+ which allows for dynamically-changing keys for the cryptographic protections involved.
The Mandatory Managed Copy system, which allows users to copy content a limited number of times.
Digital watermarking technology to the discs.
WHY Blu-ray DiscWHY Blu-ray Disc
1. HIGH STORAGE CAPACITY.
2.HIGH DATA TRANSFER RATE.
3.H/W SUPPORT.
BACKWARD BACKWARD COMPATABILITYCOMPATABILITYBlu-ray PALYERS ARE ALSO CAPABLE TO RUN CD AS WELL AS DVD.
Blu-ray PLAYERS,RECORDERS AND Blu-ray PLAYERS,RECORDERS AND DRIVESDRIVES
Blu-ray Products costBlu-ray Products cost
According to the Blu-According to the Blu-ray Disc Association, the ray Disc Association, the overall cost of overall cost of manufacturing Blu-ray Disc manufacturing Blu-ray Disc media will in the end be no media will in the end be no more expensive than more expensive than producing a DVD.producing a DVD.
Protection SystemProtection SystemHDTV contains a copyright bit that
is detected by the BD recorder. If the broadcast has no copyright bit, then the BD recorder is allowed to store the information.
Uses the Data Encryption Standard (DES) that has a key length of 56 bits.
A Key Block and Disc ID are written into the ROM area to prevent illegal copying.
EnhancementsEnhancementsError rates increased in reading and writing after
the original BD suffered scratches and fingerprintsFor protection, the prototype BD was enclosed in a
caseThe case increased the size of the disc drive
Courtesy Blu-ray Disc Founders “Blu-ray Disc Format White Paper”
AlternativesAlternativesThe primary rival to Blu-ray is HD
DVD, promoted by Toshiba, NEC Corporation, Microsoft, and Intel.
HD DVD has lower disc capacity but also have lower manufacturing cost.
CONCLUSIONCONCLUSIONExpect the BD to become more
prevalent once the HDTV market establishes its presence.
Audio and video will reach higher qualities with larger storage space.
Look for BD with more than two layers as the technology is further refined.
QUERIESQUERIES
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