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

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

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.

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

Blu-Ray Disk Structure

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

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

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) - 8152MB BD9, 4489MB BD5

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

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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.