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Presented by:-
Sudeep Abhyankar
Vineeth Kalmady
Mahesh Ladhe
SEMINARSEMINAR
ONON
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Shuji Nakamura, a professor at the University of California,Santa Barbara, invented practical blue laser diodes.
In February 2002 the project was officially announced as Blu-rayand the Blu-ray Disc Association was founded by Sony,Matsushita, Pioneer, Philips, Thomson, LG Electronics, Hitachi,Sharp, and Samsung.
HISTORY OF BLUHISTORY OF BLU--RAYRAY
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WHAT ARE BLUWHAT ARE BLU--RAY DISCS?RAY DISCS?
A Blu-ray disc on a Blue ray disc player.
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RECORDING CAPACITY
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HARD COATINGHARD COATING
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TYPES OF BDTYPES OF BD
SINGLE LAYER
DOUBLE LAYER
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DISC TYPESDISC TYPES
SINGLE LAYER DISC
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DUAL LAYER DISC
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Recording capacity
25 GB (SINGLE LAYER)
50 GB (DUAL LAYER)
Laser wavelength:405nm (blue-violet laser/
Ga N laser )
Lens numerical aperture (NA): 0.85
Data transfer rate: 36Mbps
Disc diameter: 120mm
Center hole diameter: 15 mm
Disc thickness: 1 .2mm (optical transmittance)
Recording format: Phase change recording
DISC CHARACTERISTICSDISC CHARACTERISTICS
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Tracking format: Groove recording
Tracking pitch: 0.32um
Shortest pit length: 0.160/0.149/0.138um
Recording phase density: 16.8/1 8.0/1 9.5Gbit/inch2
Video recording format MPEG2 video
Audio recording format: AC3, MPEG1, Layer2, etc.
Video and audiomultiplexingformat:
MPEG2 transport stream
DISC CHARACTERISTICSDISC CHARACTERISTICS
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COPYING RATE & DATA STORAGECOPYING RATE & DATA STORAGE
The copying rate of both single and dual
layer disc depends on the drive speed.
Drive Speed Data Rate
1X 36Mbits/s
4.5 MB/s
2X 72Mbits/s 9 MB/s
4X 144Mbits/s
18 MB/s
6X 216mbits/s
27 MB/s
8X(Theoretical)
288Mbits/s
36 MB/s
12X(Theoretical)
432Mbits/s
54 MB/s
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COMPATIBILITYCOMPATIBILITY
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COMPARISIONCOMPARISION
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ADVANTAGESADVANTAGES
High disc space at almost same cost price
Security
Reverse compatibility
High speed data transfer (36Mbps)
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APPLICATIONS OF BLUAPPLICATIONS OF BLU--RAYRAY
List of products available withList of products available with BluBlu--rayray
Players /recorders
Computer entertainment systems
Hardware for computers
Hardware - BD drives
Blank Media
Camcorders
Home theater
Printers
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COMPANIES INVOLVEDCOMPANIES INVOLVED
There are nine main companies area involved todevelop products that take full advantage of blu-raydiscs large capacity and high speed data transfer rateare
Hitachi Ltd.
LG Electronics Inc.
Matsushita Electric Industrial Co. Ltd.
Pioneer Corporation
Royal-Philips Electronics
Samsung Electronics Co. Ltd
Sharp Corporation
Sony Corporation
Thomson Multimedia
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Thus we conclude on our Topic of Blu-Ray Disc which had agreat discussion about its Evolution, Structure, Characteristics,Advantages and Disadvatages.
CONCLUSIONCONCLUSION
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THANK YOU!!!THANK YOU!!!
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ANY QUERIES PLEASE???ANY QUERIES PLEASE???