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Vaibhav Kabra

04ec26

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Background

CD introduced in 1980 -A giant leap in data storage andpremium quality for prime audio applications

Need for a 5-10x storage capacity increase for data

applications demanded use of DVDsSeamless migration and full backward compatibility

Advent of Blu-ray Technology:25Gb and 50 Gb Storage

Highest application of Optical media

Interactive and Highest Quality Standards

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Introduction

Blu Ray is the name of a next-generationoptical disc

Jointly developed by the Blu-ray DiscAssociation (BDA)

Developed to enable recording, rewriting andplayback of high-definition video (HD)

Offers more than five times the storagecapacity of traditional DVDs

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Technology

The new format uses a blue-violet laser instead,hence the name Blu-ray, unlike the current opticaldisc technologies that rely on red lasers.

Shorter wavelength than a red laser (650nm),which makes it possible to focus the laser spot witheven greater precision

Efficient data storage with a numerical aperture of

0.85Improvements in data encoding

Hard Coating: Durabis,Scratchguards

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Advantages

Pristine Picture: 6x resolution of DVD

Superior Sound: 7.1 channel lossless audio

Unrivaled storage CapacityCompatibility

Advanced Durability

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Digital rights management

(DRM)The Blu-ray Disc format employs several layers of

Digital rights management.

AACS Standards

BD+ was developed by CRI and is based on theirconcept of Self-Protecting Digital Content.

Effectively a small virtual machine embedded inauthorized players. It allows content providers to

include executable programs on Blu-ray Discs

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Contd..

Examine the host environment, to see if theplayer has been tampered with.

Verify that the player's keys have not beenchanged.

Execute native code, possibly to patch anotherwise insecure system.

Transform the audio and video output. Partsof the content will not be viewable withoutletting the BD+-program unscramble it.

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Replication

BD-ROM Markis a small amount ofcryptographical data that is stored physicallydifferently from normal Blu-ray Disc data.

Bit-by-bit copies that do not replicate the BD-ROM Mark are impossible to decode.

A specially licensed piece of hardware is

required to insert the ROM-mark into themedia during replication.

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DVD vs Blu-Ray

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FAQsWhy the name blu-ray?

The name is a combination of "Blue" (blue-

violet laser) and "Ray" (optical ray).Thecorrect abbreviation is BD, not BR or BRD(wrong abbreviation)

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FAQs:Who developed Blu-ray?

Developed by the Blu-ray Disc Association

(BDA), a group of 170 leading consumerelectronics. BODs consist of stalwarts likeApple, Dell, HP, Sharp, Sony, TDK, WaltDisney, Warner Bros,

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FAQs:What are the Blu-ray formats?

BD-ROM - read-only format for distribution of

HD movies, games, software, etc.BD-R - recordable format for HD videorecording and PC data storage.BD-RE - rewritable format for HD videorecording and PC data storage.

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FAQs:How much video can you fit on a Blu-ray

disc?

Over 9 hours of high-definition (HD) video ona 50GB disc.About 23 hours of standard-definition (SD)video on a 50GB disc.

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FAQs:How fast can you read/write data on a

Blu-ray disc?

According to the Blu-ray Disc specification, 1xspeed is defined as 36Mbps. However, as BD-ROM movies will require a 54Mbps datatransfer rate the minimum speed expected is2x (72Mbps)

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FAQs:What video codecs will Blu-ray support?

MPEG-2 - enhanced for HD, also used for

playback of DVDs and HDTV recordings.MPEG-4 AVC - part of the MPEG-4 standardalso known as H.264 (High Profile and MainProfile).

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FAQs:What audio codecs will Blu-ray support?

Dolby Digital (DD) - format used for DVDs,

5.1-channel surround sound. (mandatory)DTS Digital Surround - format used for DVDs,5.1-channel surround sound. (mandatory)DTS-HD High Resolution Audio - extension ofDTS, 7.1-channel surround sound. (optional)

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FAQs:Will Blu-ray require an Internet

connection?

No, you will not need an Internet connectionfor basic playback of Blu-ray movies.Internet connection will only be needed forvalue-added features such as downloadingnew extras, watching recent movie trailers,web browsing, and authorization.

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FAQs:What will Blu-ray products cost?

As with any new technology the first

generation of products will likely be quiteexpensive due to low production volumes.TDK:25 GB BD-R (4x)and BD-RE (2x)media @$8.99 and $12.99 respectively

Samsung :BD-P1000, retailing for $1000 USD

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Latest AdvancementsQuad-layer (100 GB) discs

A High Definition optical disc process that

extends the disc capacity of both competingformats to 10 layers has also been developed

BD9 / Mini-Blu-ray Disc- Cost effectivealternative

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References:

Bluray Future:H.C. Markonikov

Article Blu-Ray:Science Today

www.bluray.comwww.wikipedia.org

http://www.bluray.com/http://www.wikipedia.org/http://www.wikipedia.org/http://www.bluray.com/

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Thank You!