blu ray disc

DEPARTMENT OF INFORMATION TECHNOLOGY
RAJKIYA ENGINEERING COLLEGE, AMBEDKAR NAGAR (UP)-224122
A
Colloquium
On
Submitted By:
VINAY KUMAR
ROLL NO:1573713037
Under the supervision of
MR. SOHIT SHUKLA
(Asst. Professor)
Submitted to:
MISS.ANAMIKA SRIVASTAVA
(Asst. Professor)
2/22/20171

CONTENTS
 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
2/22/2017
2

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.
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3

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
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4

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.)
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5

The Technology of Blu-ray disc
So, in blu-ray disc:
1. Pit size-- 0.15 microns (more than twice a small as the pits on
DVD).
2. Track pitch– 0.32 microns
3. laser needed:-- blue-violet laser (450nm)
4. Data transfer rate: 36Mbps
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Working of Blu-ray disc
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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
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DVD Vs Blu ray disc
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Application
1. High definition television
recording
2. High definition
3. High definition camcorder
archiving
4. Mass data storage
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10

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
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11

 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
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12

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.
2/22/2017
13

blu ray disc

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