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Blue Ray & DVD-R - Differences
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Posted Message
Oriphus
AfterDawn Addict
_ 		9. June 2003 @ 14:20 _ Link to this message    Send private message to this user   
Here is a bit of information about the differences between Blue Ray and Current DVD-R systems. Tosca - have a read!

DVD-R

Parameter Ver 1.0 Authoring use General use
Number of Sides 1 or 2 1 or 2  
Capacity (GB) 3.95  4.7   4.7 
Recording method Organic dye layer 
Laser wavelength 635/650nm 635nm 650nm
Min pit length (microns) 0.44 0.40 0.40
Track pitch (microns) 0.80 0.74 0.74
Laser wavelength 635/650nm 635nm 650nm
Pre-pit addressing increment increment decrement
Serialisation for CPRM   No Yes
Pre-recording   No Yes
Track format Wobble pre-groove 
Modulation & error correction 8 to 16 & RSPC 



Blue Ray

Recording capacity: 23.3GB/25GB/27GB
Laser wavelength: 405nm (blue-violet laser)
Lens numerical aperture (NA): 0.85
Data transfer rate: 36Mbps
Disc diameter: 120mm
Disc thickness: 1.2mm (optical transmittance
protection layer: 0.1mm)
Recording format: Phase change recording
Tracking format: Groove recording
Tracking pitch: 0.32um
Shortest pit length: 0.160/0.149/0.138um
Recording phase density: 16.8/18.0/19.5Gbit/inch2
Video recording format: MPEG2 video
Audio recording format: AC3, MPEG1, Layer2, etc.
Video and audio multiplexing format: MPEG2 transport stream
Cartridge dimension: Approximately 129 x 131 x 7mm


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For User Guides/Downloads: http://www.chrismccann.co.uk/user_guides.htm

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