1. Done By: Bader Bin Salamah
EE-430
Information Theory and Coding
Done By:
Bader Bin Salamah

2. Outline What is Blu-Ray Disk? Blu-Ray Disk Capabilities
Blu-Ray Disk Structure
Formats Used
Blu-Ray Disk Types
Conclusion

3. What is Blu-Ray Disk? It is an optical disc storage media format.
Its main uses are high-definition video and data storage.
The disc has the same dimensions as a standard DVD or CD.
Uses a 405nm blue laser to read/write data.
Blu-ray Disc was developed by the Blu-ray Disc Association.

4. Blu-Ray Disk Capabilities
HD video recording.
More recording time for standard video.
High storage capacity:
25GB (single layer)
50GB (double layer)

5. Blu-Ray Disk Structure

6. Blu-Ray Disk Structure
Hard Coating
More pits
Smaller pit lengths
Smaller track pitch
Data on top of poly-layer prevents the birefringence problem

7. Formats Used There are basically three formats used: MPEG-2
MPEG-4 AVC (known as H.264)
VC-1

8. Blu-Ray Disk Types 25GB Type (single layer):
BD-ROM (read-only) - for pre-recorded content
BD-R (recordable) - for PC data storage
BD-RW (rewritable) - for PC data storage
BD-RE (rewritable) - for HDTV recording
Mini-BD (7.5 GB) – 8cm diameter
BD9 / BD5 (lower capacity type) MB BD9, 4489MB BD5

9. Conclusion Big advancement in the disk storage technology.
Overthrew the HD-DVD technology.
Possible setback: high price disc+writer

10. Thank you for listening
I’ll be happy to answer any questions
Thank you for listening

11. CD Scratches Problem: Solution:
Scratches make the laser divert and hence you cannot read the disk.
Solution:
Try cleaning it first; dirtiness could be the cause.
Repair the disk by applying some solution on the surface.
If nothing works, try to prevent it from being scratched in the first place.