Bluray disc seminar

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1. An optical disc storage mediumUsed to store HD VideosDeveloped by Blu-ray Disc AssociationUtilizes blue-violet LASER to Read & Write 2. CAPACITYVIDEO QUALITRYECORDING CODECS DISC FORMATSVideo Codecs :s u p p o r t s 1 9 2 0 x 1 0 8 0 r e s o l u t i o nBD ROM - commercial movies and softwareRecording speed :1x defined as 36 MBps2x = 72 MBpsSingle-layer Disc 25 GBDual-layer disc : 50 GBMPEG-2MPEG-4 AVCSMPTE VC-1BD a n d R - p Single r o g r recording e s s i v e of r e Data f r e s or h Videoi n g o f a l l l i n e s o nt h e s c r e e n ( i e 1 0 8 0 p )Potential for addition of more layers (25 GB per layer)Audio Codecs :BD RE - Rewritable recordingPotential for much higher speeds because of large NumericalAperture NA. (upto 288 MBps)Linear PCMDolby DigitalDolby Digital PlusDTS Digital SurroundDTS-HD High Resolution Audioma x imum v i d e o b i t r a t e o f 4 0MB p s( w h i c h i s m o r e t h a n 4 t i m e s f a s t e r t h a n a D V D ' s )a 50 GB disc can hold upto 9 hours of HD video --or--23 hours of Standard videoBD/DVD hybrid formats playable in both DVD and Blu-ray playersLarge NA value means less recording power and lower disc RPM 3. 1st generetion audio700 MB storage space1x: 1.2 MBpswavelength of LASER :780 nmNumerical Aperture :0.451.2 mm substratetrack pitch : 1.6 um2nd generetion SD Video4.7 GB storage space1x: 11 MBpswavelength of LASER :650 nmNumerical Aperture :0.600.6 mm substratetrack pitch : 0.74 um3rd generetion HD Video25 GB storage space1x: 36 MBpswavelength of LASER :405 nmNumerical Aperture :0.850.1 mm substratetrack pitch : 0.30 um