by ABHISHEK POTTER

1. DEPARTMENT OF INFORMATION TECHNOLOGY
RAJKIYA ENGINEERING COLLEGE, AMBEDKAR NAGAR (UP)-224122
WELCOME TO
A
Colloquium
On
Submitted By:
VINAY KUMAR
Under the supervision of
MR. SHOHIT SHUKLA
Submitted to:
Miss.Anamika Srivastava

2. CONTENTS
 Motivation
 Introduction
 History
 The technology of blu ray disc
 Working of blu ray disc
 Characteristics of blu ray disc
 CD Vs DVD Vs Blu ray disc
 Application
 Advantage & disadvantage
 Conclusion
 Reference

3. INTRODUCTION
What is BRD?
1. A blu-ray disc is a optical storable device that stores
high-definition video
2. Blu-ray, also known as Blu-ray Disc (BD) is the name of
a next-generation optical disc format.
3. A blu-ray disc can store up to 50GB of data.

4. 1st Generation :
1. Compact Disc (CD):-- 650/700MB
2. It is with us for over 20 yrs.
3. Wavelength of laser which reads data: 780nm
4. Color of laser: Red
2nd Generation :
1. Digital versatile disc (DVD):-- 4.7GB
2. It offers high quality sound and video than CD.
3. Wavelength of laser which reads data: 650nm
4. Color of laser: Red
HISTORY

5. 3rd Generation:
1. Blu-ray disc (BD):-- 25/50 GB
2. Next generation optional disc format.
3. Developed by blu-ray association (which
includes Apple,Hitachi, HP, LG, Panasonic,
Pioneer)
4. Wavelength of laser that reads data: 405
HISTORY(CONT.)

6. The Technology of Blu-ray disc
So, in blu-ray disc:
1. Pit size-- 0.15 microns (more than twice as
2. small as the pits on DVD).
3. Track pitch– 0.32 microns
4. laser needed:-- blue-violet laser (450nm)
5. Data transfer rate: 36Mbps

7. Working of Blu-ray disc

8. Characteristics of Blu-ray disc
1. Single layer: 25 GB
Dual layer: 50 GB
2. Diameter: 120 mm
3. Thickness: 1.2 mm
4. Center hole diameter: 15 mm
5. Uses blue laser of wavelength 400 nm

9. DVD Vs Blu ray disc

10. Application
1. High definition television
recording
2. High definition
3. High definition camcorder
archiving
4. Mass data storage

11. Advantage & disadvantage
1. Large storage capacity.
2. Inclusion in gaming consoles.
3. Backward compatibility.
4. Edit or reorder programs
recorded on the disc .
5. Instantly skip to any spot on the
disc .
1. Very expansive technology.
2. High definition capacity is not
substantial amount.
3. Higher price for purchase

12.  Both DVD and BD would most likely co-exist for
quiet some time until HDTVs become more
widespread.
 Audio and video will reach higher qualities with
larger storage space
Conclusion

13. Reference
•www.wikipedia.org/wiki/Wikipedia:WikiProject
•www.appgeeker.com/blu-ray-ripper.
•www.sony.co.in/electronics/blu-ray-dvd-players/t/blu-ray-disc-
players.