Blu-Ray is the next generation optical disc format that uses blue-violet lasers and has higher storage capacity than DVDs. It can store up to 50GB of data, allowing for high definition video and audio. Blu-Ray discs have a hard coating that makes them more durable and resistant to fingerprints and scratches compared to DVDs. They also have faster data transfer rates and can playback DVDs, giving them an advantage in storage, quality, and compatibility over prior disc formats.

1. Blu-Ray
Technology

2. BLUE-RAY

3. HISTORY
OF
DISCS

4. Compact Disc (CD)
Size 650/700MB
It has been with us for over 20 yrs.
Color of laser RED
1st
Generation

5. Digital Versatile Disc (DVD)
Size 4.7 GB
It offers high quality sound and video
than a CD
Color of laser RED
2nd Generation

6. Blu-Ray Disc (BD)
Size 25/50 GB
It is the next generation Optical Disc
Format
Color of laser Blue-Violet
3rd Generation

7. Comparison
DVD’s
BD’s
&
Between

8. BD DVD
 No such hard coating is
placed on the DVD.
 A DVD suffers from Disc
Tilt.
 A DVD player cannot play
a BD.
 A Hard coating is placed
outside to protect the BD
from scratches or
fingerprints.
 A BD doesn’t suffer from
Disc Tilt.
 A BD player can play a
DVD or a CD.

9. THE NAME
“BLU-RAY”

10.  The name “Blu-Ray” is a combination of “Blue” and
“Ray” where Blue stands for the colour of the laser
that is used and “Ray” stands for the optical ray.
 The “e” in “blue” was purposely left out because
according to the manufacturers, an everyday word
cannot be a trademark.

11. Blu-Ray Disc Drive

12. Format
Of
BD’s

13. THE BLU-RAY DISCS COMES IN 4 DIFFERENT FORMATS.
1. BD-ROM (read only) – For reading recorded content.
2. BD-R (recordable) – For PC data storage.
3. BD-RW (rewritable) – For PC data storage.
4. BD-RE (rewritable) - For HDTV(high definition television) recording.

14. TYPES
OF
BD’S

15. Single Layer BD
This type of BD’s can hold up to 25/27 GB . That
means 2 hours of HD video or about 13 hours of
standard video.
Double Layer BD
This type of BD can hold data up to 50 GB. That
means 4.5 hours of HD video or about 20 hours of
standard video.

16. THE
TECHNOLOG
Y

17. The BD was developed by Blu-Ray association (which includes Apple,
Hitachi, HP, LG, Panasonic, Pioneer, Philips, Samsung, Sharp and Sony).
A Blu-Ray Disc stores digitally encoded data in the form of PITS.
Pits are spiral groves that runs from the center of the disc to its edge.
The pit size of a BD is 0.15 microns (more than twice as small as the pits on
a DVD).
The Data transfer rate of a BD is 36 Mbps.
A Blu-Ray disc will only work on a blue-violet laser and not on a red laser.

20. FEATURES
OF
BD’s

21. A BD enables us to …
 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 programs recorded on the disc.
 Access the web to download subtitles and other extra
features.

22. ADVANTAGES
OF
BLU-RAY
DISCS

23.  Various hard coating technologies make Blu -Ray discs more
durable and family-friendly.
 Hard coating technology provides resistance to:
– Fingerprints
– Marks
– Scratches
– Dust
 BD’s are much more Stronger than today’s polycarbonate based
CD’s, DVD’s and HD DVD’s.
 Better for random access of data.
 Faster data seek.

24. Advantages
Of
BD’s
Over
DVD’s

25.  Blue-Violet Laser v/s Red Laser
 Storage Capacity
 Backward Compatibility
 Audio and Picture Quality
 Cost

26. Blu-ray discs are better armed than current DVD’s.
They come equipped with a secure encryption system which
consists of a unique ID that prevents video piracy and
copyright infringement.
Safety tip

27. THANK YOU