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Page 1: Bluray disc seminar
Page 2: Bluray disc seminar

An optical disc storage medium

Used to store HD Videos

Developed by Blu-ray Disc Association

Utilizes blue-violet LASER to Read & Write

Page 3: Bluray disc seminar

DISC FORMATSCODECSRECORDINGVIDEO QUALITYCAPACITY

supports 1920x1080 resolut ion

and progress ive refreshing of a l l l ines on the screen ( i e 1 0 8 0 p )

maximum video b i t rate of 40MBps ( w h i c h i s m o re t h a n 4 t i m e s f a s t e r t h a n a DV D ' s )

BD ROM - commercial movies and software

BD R - Single recording of Data or Video

BD RE - Rewritable recording

BD/DVD hybrid formats playable in both DVD and Blu-ray players

Recording speed : 1x defined as 36 MBps 2x = 72 MBps

Potential for much higher speeds because of large Numerical Aperture NA. (upto 288 MBps)

Large NA value means less recording power and lower disc RPM

Single-layer Disc : 25 GB Dual-layer disc : 50 GB

Potential for addition of more layers (25 GB per layer)

a 50 GB disc can hold upto 9 hours of HD video --or-- 23 hours of Standard video

Video Codecs :MPEG-2

MPEG-4 AVC SMPTE VC-1

Audio Codecs :Linear PCMDolby Digital Dolby Digital PlusDTS Digital SurroundDTS-HD High Resolution

Audio

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1st generetion audio

700 MB storage space

1x: 1.2 MBps

wavelength of LASER : 780 nm

Numerical Aperture : 0.45

1.2 mm substrate

track pitch : 1.6 um

2nd generetion SD Video

4.7 GB storage space

1x: 11 MBps

wavelength of LASER : 650 nm

Numerical Aperture : 0.60

0.6 mm substrate

track pitch : 0.74 um

3rd generetion HD Video

25 GB storage space

1x: 36 MBps

wavelength of LASER : 405 nm

Numerical Aperture : 0.85

0.1 mm substrate

track pitch : 0.30 um

Page 5: Bluray disc seminar

DOUBTS…??