BLU-RAY

Babli Mahur

MCA(IVSem)

07913304409

CONTENTS Introduction Evolution History Features Format of BD Types of BD Working Implementation Comparison Application Advantages Disadvantages Future Scope References

INTRODUCTION

Blu-ray Disc (official abbreviation BD) optical disc storage medium to supersede the DVD format. standard physical 12 cm plastic optical disc, developed by Blu-ray Disc Association, group representing makers

of consumer electronics, computer hardware, and motion pictures. During the high definition optical disc format war, Blu-ray Disc

competed with the HD DVD format. Toshiba supported HD DVD, conceded in February 2008,

releasing their own Blu-ray Disc player in late 2009. As of June 2009, more than 1,500 Blu-ray Disc titles available in

Australia and the United Kingdom.2,500 in the United States and Canada.

In Japan, as of July 2010, more than 3,300 titles have been released.

Contd…)

The companies that have jointly established the BD specifications are:

Hitachi, Ltd LG Electronics Matsushitha Electrical Industrial Co. Ltd Mitsubishi Electric Corporarion Pioneer Corporation Samsung Electronics Co. Ltd Sony Thomson Royal Phillips Electronics Sharp Corporation

THE NAME

BLU - RAY=

“blue” for the color of the laser +

“ray” for optical ray.-------------------------------------------------------

The “e” in “blue” was purposefully left off by the manufacturers

(an everyday word cannot be a trademark).

EVOLUTION

VHS: analogDVD: digitalBD: high-definition

Enables recording, rewriting, and playback of high-definition video

Capable of storing information that the DVD and CD are not capable of holding

HISTORY

1st GENERATION:Compact disc (CD): --- 650/700 MBIt is with us for over 20 years.Wavelength of laser which reads data: 780 nmColor of laser: Red 2nd GENERATION:Digital versatile disc (DVD): --- 4.7 GBIt offers high quality sound and video than CD.Wavelength of laser which reads data: 650 nmColor of laser: Red

History

3rd GENERATION:Blu-ray disc (BD): --- 25/50 GB-Next generation optical disc format.-Developed by blu-ray disc association (which

includes Apple, Hitachi, HP, LG, Panasonic, Pioneer, Philips, Samsung, Sharp, Sony)

-Wavelength of laser which reads data: 405 nm-Color of laser: Blue-violet which was developed

bySHUJI NAKAMURA at NICHIA CORPORATION

FEATURES

With BD we can: Record HDTV without any quality loss. Instantly skip to any spot on disc. Record any program while watching other on the disc. Create playlists. Edit or reorder programs recorded on the disc. Automatically search for an empty on the disc to avoid

recording over the program. Access to web to download subtitles and other extra

features. And many more…..

FORMAT OF BD

It comes in four different formats: BD-ROM (read only) : for reading

recorded content. BD-R (recordable) : for PC data storage. BD-RW (rewritable) : for PC data

storage. BD-RE (rewritable) : for HDTV (high

definition television) recording.

TYPES OF BD

SINGLE LAYER: Can hold data upto 25/27 GB that means 2hrs of HD video or about 13hrs of standard video.

DOUBLE LAYER: Can hold data upto 50GB that means 4.5hrs of HD video or more than 20hrs of standard video.

WORKING OF BLU-RAY DISC

Discs store digitally encoded video and audio Information in pits , spiral grooves that run from the center of the disc to its edges .

A laser reads the other side of these pits to play the movie or program that is stored on the disc.

The more data that is contained on a disc, the smaller and more closely packed the pits must be.

WORKING OF BLU-RAY DISC Contd…

The smaller beam focuses more precisely, enabling it to read information recorded in pits that are not only 0.15 microns long this is more than twice as small as the pits on a DVD.

COMPARISON

CONSTRUCTION

Comparison in Beam Comparison in Beam sizesize

CD vs. DVD vs. HD-DVD vs. CD vs. DVD vs. HD-DVD vs. Blu-ray DiscBlu-ray Disc

Comparison of CD,DVD and B D specification

Parameter CD DVD BD .Disk diameter 120 mm 120 mm 120 mm Disk thickness 1.2 mm 1.2 mm 1.2 mm Laser wavelength 780 nm 650 nm 405 nm Numerical aperture 0.45 0.60 0.85 Minimum pit length 0.83 um 0.4 um 0.138 um Data rate 1.2 Mb/sec 11 Mb/sec 36 Mb/sec Number of sides one ----- one or two Number of data layers One ----- One or two Data capacity ~680 MB 4.7 GB (1L) 27 GB 8.5 GB (2L)

1 7 GB (2L/2S)

Regional codes

Regions for the Blu-ray standard:  A/1: The Americas (except Greenland), and their dependencies,

East Asia (except mainland China and Mongolia), and Southeast Asia.   B/2: Africa, Middle East, Southwest Asia, Europe (except Belarus,

Russia and Ukraine), Australia, New Zealand, and their dependencies.   C/3: Central Asia, East Asia (mainland China and Mongolia only),

South Asia, Eastern Europe, and their dependencies.

BLU-RAY ‘S DURABILITY BLU-RAY ‘S DURABILITY ADVANTAGEADVANTAGE Various hard coating technologies make Blu ray Various hard coating technologies make Blu ray

disc most durable and family-friendly.disc most durable and family-friendly. Hard coating technology provides resistances to:Hard coating technology provides resistances to:

Finger printsFinger prints MarksMarks ScratchesScratches DustDust

Much more ROBUST than today’s Much more ROBUST than today’s polycarbonate-based CD/DVD’s (and HD DVD’s).polycarbonate-based CD/DVD’s (and HD DVD’s).

Blu-ray Density Blu-ray Density AdvantageAdvantage

Higher density Higher density enables better data enables better data seek times.seek times.

Shorter to travel for Shorter to travel for same amount of same amount of data results in the data results in the faster data seek.faster data seek.

Better for random Better for random access of data.access of data.

ADVANTAGES OF BD

With BD we can: Record HDTV without any quality loss More storage capacity on a disc of the same size High data transfer rate Available in different versions likeBD- ROM, BD-R and BD-RE Backward compatible

DISADVANTAGES

Cost for recordable 25gb BD disc for 17 $ Cost for recordable 50 gb BD disc for 34$ Cost for rewriteable 60$ appox Cost of bddiscplayer 300$-400$

Do More With…Do More With…

More capacity , Density and Performance.

More Industry Support/Consumer Reach. More Durable. More interactive user experience. More flexible content protection.

REFERENCES

http://www.digitaljournal.com/article/254136 http://www.blu-ray.com/news/?id=1616, http://www.docstoc.com/docs/424938/White-paper-

General-Blu-ray-Disc-Format http://allfreedownloadlinks.com/free-softwares/free-

multimedia-software/blu-ray- to-dvd-pro-v120/ http://reviews.cnet.com/1770-9991_7-0.html?query=

blu+ray+disc&searchtype=products&tag=ltcol;narrow http://en.wikipedia.org/wiki/Blu-ray_Disc#

Technical_specifications http://www.thefreelibrary.com/_/search/Search.aspx? SearchBy=0&Word=blu+ray+disc&By=0