1. 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
Developed by: Blue ray Disc Association
Usage: Data storage, High-definition video, PlayStation 3 Games

2. History 1990’s 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)

3. Blu-ray Vs. DVD Blue-Ray HD DVD DVD Wavelength
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
640 Kbit/s
504 Kbit/s
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
720x480
Frame rates
24/25,50/60
24/25/30,50/60
50/60
Hard coating of disc
manatory
optional

4. 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