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) 06/19/2022 1
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DEPARTMENT OF INFORMATION TECHNOLOGYRAJKIYA ENGINEERING COLLEGE, AMBEDKAR NAGAR (UP)-224122
A Colloquium
On
Submitted By:VINAY KUMAR
ROLL NO:1573713037
Under the supervision ofMR. SOHIT SHUKLA (Asst. Professor)
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
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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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1st Generation :1. Compact Disc (CD):-- 650/700MB2. It is with us for over 20 yrs.3. Wavelength of laser which reads data: 780nm4. Color of laser: Red
2nd Generation :5. Digital versatile disc (DVD):-- 4.7GB6. It offers high quality sound and video than CD.7. Wavelength of laser which reads data: 650nm8. Color of laser: Red
HISTORY
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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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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 microns3. 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 GBDual 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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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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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