5. CORRECT NAME
Blu-ray Disc
NOT
Blue-ray Disc
Blu-Ray Disc
6. INTRODUCTION OF BD
Why the name Blu-ray ?
Who developed Blu-ray ?
Is Blu-ray the same thing as HD-DVD ?
7. Foundation
Blu -ray d is c (BD ) is ap p rop riate ly nam e d
afte r th e b lu e las e r u s e d to write th e d ata.
Th e firs t b lu e las e r was d e ve lop e d in
1 996 b y S h u j N akam u ra (N ich ia
i
C orp oration).
In 2002, an alliance was form e d , calle d
th e Blu -ray D is c As s ociation, inclu d ing
th e like s of S ony, S am s u ng, S h arp ,
H e wle tt-P ackard , and R oyal P h illip s .
Th e “e ” is inte ntionally le ft ou t of th e
nam e d u e to trad e m ark re s trictions .
8. Specifications
About 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).
9. Specifications
S ingle laye r D u al laye r
P h ys ical s ize
cap acity cap acity
1 2 cm , s ingle
25 G B (23.3 G iB) 50 G B (46.6 G iB)
s id e d
1 2 cm , d ou b le 1 00 G B (93.2
50 G B (46.6 G iB)
s id e d G iB)
8 cm , s ingle 1 5.6 G B (1 4.5
7.8 G B (7.3 G iB)
s id e d G iB)
8 cm , d ou b le
1 5.6 G B (1 4.5 G iB) 31 .2 G B (29 G iB)
s id e d
10. Disc Characteristics
Th e p owe r
cons e rvation
allows th e
d e ve lop m e nt of
m u lti-laye r
p latform s and
h igh -s p e e d
re cord ing.
BD -R O M : re ad -
only form at
BD -R and BD -
R E : re cord ab le
form ats (R E :
re writab le ; R :
re cord ab le
once ) Courtesy Blu-ray Disc Founders “Blu-ray Disc Format White Paper”
11. Recorder Characteristics
O ve r two h ou rs of H D TV can b e p lace d on
a s ingle laye r BD , wh ich corre late s to ove r
1 3 h ou rs for s tand ard TV
Th e trans fe r rate is 36 m e gab its p e r
s e cond
At 1 x s p e e d , it take s ap p roxim ate ly 1 .5
h ou rs to re cord an e ntire s ingle laye r BD
R e cord e r C os t: $1 ,500 - $2,500; BD C os t:
$26
E xp e cte d to b e availab le in th e U .S . b y
2006
12. Software Standards Followed
C odecs :C od e cs are com p re s s ion
s ch e m e s th at can b e u s e d to s tore au d io
and vid e o inform ation on a d is c.
F or Vid e o:M P E G -2,H 264/AVC & VC -1 .
F or au d io,:BD -R O M p laye rs are
re qu ire d to s u p p ort D olb y D igital and
D TS
13. Software Standards Followed
Sun 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.
14. Region Codes
R e gion
Are a
cod e
N orth Am e rica, S ou th Am e rica, E as t
A/1
As ia e xce p t for C h ina
B/2 E u rop e and Africa
C h ina, M id d le E as t, R u s s ia, and S ou th
C/3
As ia.
15. Digital Rights Management
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.
16. WHY Blu-ray Disc
1. HIGH STORAGE
CAPACITY.
2.HIGH DATA
TRANSFER
RATE.
3.H/W SUPPORT.
19. Blu-ray Products cost
According to the Blu-ray
Disc Association, the overall cost
of manufacturing Blu-ray Disc
media will in the end be no more
expensive than producing a DVD.
20. Protection System
H D TV contains a cop yrigh t b it th at is
d e te cte d b y th e BD re cord e r. If th e
b road cas t h as no cop yrigh t b it, th e n
th e BD re cord e r is allowe d to s tore th e
inform ation.
U s e s th e D ata E ncryp tion S tand ard
(D E S ) th at h as a ke y le ngth of 56 b its .
A K e y Block and D is c ID are writte n
into th e R O M are a to p re ve nt ille gal
cop ying.
21. Enhancements
E rror rate s incre as e d in re ad ing and writing afte r th e
original BD s u ffe re d s cratch e s and finge rp rints
F or p rote ction, th e p rototyp e BD was e nclos e d in a
cas e
Th e cas e incre as e d th e s ize of th e d is c d rive
Courtesy Blu-ray Disc Founders “Blu-ray Disc Format White Paper”
22. Alternatives
The 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.
23. CONCLUSION
E xp e ct th e BD to b e com e m ore
p re vale nt once th e H D TV m arke t
e s tab lis h e s its p re s e nce .
Au d io and vid e o will re ach h igh e r
qu alitie s with large r s torage s p ace .
Look for BD with m ore th an two laye rs
as th e te ch nology is fu rth e r re fine d .
