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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.

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done by bader bin salamah

EE-430

Information Theory and Coding

Done By:

Bader Bin Salamah

outline
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
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
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 structure1
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
Formats Used
  • There are basically three formats used:
    • MPEG-2
    • MPEG-4 AVC (known as H.264)
    • VC-1
blu ray disk types
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
Conclusion
  • Big advancement in the disk storage technology.
  • Overthrew the HD-DVD technology.
  • Possible setback: high price disc+writer
cd scratches
CD Scratches
  • Problem:
    • 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.