Blu-ray

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Blu-ray

• Media type High-density optical disc
• Encoding MPEG-2, MPEG-4 AVC(H.264), VC-1
• Capacity 25 GB(single layer), 50 GB (dual layer)
• Read mechanism1x_at_36 Mbit/s 2x_at_72 Mbit/s
• Developed by Blue ray Disc Association
• Usage Data storage, High-definition video,
  PlayStation 3 Games

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History

• 1990s Shuju Nakamura invented blue laser diodes
• 2002 Blu-ray Disc Association was founded
• April 10 Sony BDZ-S77(first consumer devices in
  stores)
• October 2003 Professional Disc for Data
• June 2006 First BD-ROM player shipped
• July 2006 BWU-100A (Blu-ray rewritable drive)

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Blu-ray Vs. DVD
  Blue-Ray HD DVD DVD
Wavelength 405 nm(blue-violet laser) 650nm (red laser)
Numerical aperture 0.85 0.65 0.6
Storage capacity/per layer 25 15/17 GB 4.7 GB
Storage capacity/maximum 50 30/51 GB 8.5 GB
Audio Mandatory _at_ 640 Kbit/s Mandatory _at_ 504 Kbit/s Mandatory _at_ 448 Kbit/s
Maximum raw date transfer 53.95 Mbit/s 36.55 Mbit/s 11.08 Mbit/s
Internet support Optional (BD-Live player only) Manatory N/A
Vidoe resolution 1920x180 1920x180 720x480
Frame rates 24/25,50/60 24/25/30,50/60 50/60
Hard coating of disc manatory   optional
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Blue-ray Devices

• Type of Device Video Game
• PlayStation 3
• Stand-alone Player
• Sharp BD-HP20S
• Blu-ray/DVD/HDD Recordable Player
• Panasonic DIGA DMR-BW900
• Laptop Computer
• Dell XPS M2010
• PC Drive
• Pioneer BD-2202