It’s a new generation disc

Blu-ray Disc

Presented by Vimesh Shah

Content

1. Introduction

2. Characteristics of Blu-ray Disc

3. Specifications of Blu-ray Disc

4. Comparison of Storage Technologies

5. Application

Introduction

Blu-ray (BD) is a next-generation optical disc format.

The format was developed to enable recording,

rewriting and playback of high-definition video (HD),

as well as storing large amounts of data.

The format was developed by the Blu-ray Disc

Association, a group representing makers of

consumer electronics, computer hardware, and

motion pictures.

The companies that have jointly established the BD

specifications are Apple, Dell, Hitachi, HP, JVC, LG,

Mitsubishi, Panasonic, Pioneer, Philips, Samsung,

Sharp, Sony, TDK and Thomson.

The name Blu-ray is derived from the blue-violet

laser it uses to read and write to the disc.

The “e” was intentionally left out of the name due to

trademark restrictions.

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

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 by

SHUJI NAKAMURA at NICHIA CORPORATION

Characteristics

Life Span

Cost

Capacity

Robustness of disc

Compatible

Hard-coating technology

Life Span: In the case of ordinary discs , the discs life is

less.

In the rewritable version , as re-writing is done repeatedly to one area of the disc most probably , the inner perimeter limiting the disc life.

BDFS is designed so as to avoid this problem , by using a system that uses free disc spaces with equal frequency

Cost: Cheapest production cost.

Capacity: The Blu-ray disc enables the recording,

rewriting and playback of HD video up to 27GB of data on a single sided layer.

It is enough to put 2.5 hours of HDTV recording on it

It also can record over 13 hours of standard TV broadcasting

Robustness: Stronger resistance to scratches and

fingerprints the protective layer is hard enough to prevent accidental and abrasions and allows fingerprints to be removed by wiping the disc with a tissue.

Compatible: The BD drives are designed to be backward

compatible, i.e. CD and DVD’s work equally well with the BD drives.

Hard-coating technology

Hard-coating technology provides resistance to:- Finger prints- Marks- Scratches- Dust

Various hard coating technologies make Bly ray disc most durable and family -friendly”

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

Types Of Blu-ray Discs

SINGLE LAYER :- Can hold data up to 25/27 GB that means 2 hrs of HD

video or about 13 hrs of standard video.

DOUBLE LAYER :- Can hold data up to 50 GB that means 4.5 hrs of HD

video or more than 20 hrs of standard video.

Size of Blu-ray Disc

Comparison B/w CD,DVD & Blu-ray Disc

Advantages

record one program while watching another on the disc .

automatically search for an empty space on the disc to avoid recording over a program.

access the Web to download subtitles and other extra features.

Has the potential of up to 54MB/s read and write speeds.

Allows for high definition 1080p movies to be marketed.

Applications

Recent Development

Blu-ray 3D

The Blu-ray Disc Association (BDA) created a task

force made up of executives from the film industry

and the consumer electronics and IT sectors to help

define standards for putting 3D film and 3D television

content on a Blu-ray Disc.

Sony has released a firmware upgrade for PlayStation

3 consoles that enables 3D Blu-ray Disc playback.