Toshiba shows next generation blue laser DVD media.

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http://www.eetimes.com/sys/news/OEG20030509S0045


TOKYO — Toshiba Corp. will be presenting a paper at the Optical Data Storage meeting, held May 10-14 in Vancouver, Canada on its development of a dual layer 36-Gbyte rewritable disk for the Advanced Optical Disk (AOD) system.

The dual-layer disk is an effort to realize a 40-Gbyte capacity on each side using technologies similar to that of DVD.

The AOD system uses an objective lens with a numerical aperture of 0.65 and the same disk structure as DVD disks (two 0.6mm thick platters bonded together). The competitive Blue-ray Disk format uses a lens with a numerical aperture of 0.85 and a disk with a 0.1-mm cover layer, which makes the format incompatible with the DVD format.

The AOD disk is a phase-change disk whose recording layers are made of a germanium-tellurium-rich germanium-antimony-tellurium-bismuth alloy. The capacity target is 40 GBytes.
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megadrive0088 said:
AOD = DOA


two words.

Blu Ray :D
Click to expand...

Not if MS and the PC industry is backing it ;)

Blu-ray's capacity advantage is getting smaller by the minute and we haven't even factored in manufacturing costs ;)

Blu-ray will likely be very expensive.
 
Well... I like having a more scratch resistant format and with a new filesystem that allows playback and record at the same time ( pretty much )...

Still Blu-Ray, dual layer, Rew-Writable = 50 GB

AOD = 36 GB ;)
 
Panajev2001a said:
Well... I like having a more scratch resistant format and with a new filesystem that allows playback and record at the same time ( pretty much )...

Still Blu-Ray, dual layer, Rew-Writable = 50 GB

AOD = 36 GB ;)
Click to expand...

MOs, which also have a scratch resistant cartridge, also had more storage capacity than CDRWs ;)

CDROMs also started out with a caddies. Most consumers didn't like them even though they protected CDs from scratches/dust.
 
Panajev2001a said:
Blu-Ray ships without caddies too... Blu-Ray has more protective layers than AOD...
Click to expand...

It has too many disadvantages/inconveniences.


Sony has taken the wraps off the first commercial consumer-use video recorder that uses blue-laser technology. The BDZ-S77 will go on sale in Japan next month. It is based on the Blu-ray optical disc format announced just over a year ago. The nine consumer electronics companies behind it are promoting it as a system for recording high-definition television broadcasts. Sony's first generation recorder will land on Japanese retail shelves on April 10, at a price of $3,800. It looks similar to the prototype Blu-ray player that Sony showed at the Ceatec show in Japan last October. To support the new machine, Sony also announced its first generation Blu-ray media Discs with a 23GB capacity will go on sale from April 10 priced at $30.
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Will Blu-ray Discs use a cartridge?


We have still not heard of any definitive decision about this issue, but it looks like the discs will be encased in a cartridge to protect the media from dust and fingerprints. The proposed cartridge dimension is approximately 129×131×7mm.

Will Blu-ray support playback of HD-DVDs?


Yes, as soon as the HD-DVD standard has been decided you should expect to see Blu-ray recorders with support for playback of HD-DVDs. However, the first generation of players are unlikely to support HD-DVD as all the details surrounding the format still haven't been finalized.
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I disagree...

AOD == DVD 1.5

Blu-Ray == next-generation DVD

AOD == similar pit density without the extra protective layer

Blu-Ray == better protection anti-scratches, etc...
 
Panajev2001a said:
I disagree...

AOD == DVD 1.5

Blu-Ray == next-generation DVD

AOD == similar pit density without the extra protective layer

Blu-Ray == better protection anti-scratches, etc...
Click to expand...



Is Blu-ray the same thing as HD-DVD?


No, HD-DVD is the name of the next-generation pre-recorded format which will eventually replace DVD. The format was developed for playback of pre-recorded video and won't support recording or rewriting. As the format utilizes the same red-laser technology used in current DVD players it will need to rely on advanced video compression (MPEG-4 or similar) to fit a high-definition movie on a single disc. The format is being developed by the DVD Forum to meet the specific requirements of Hollywood.

Blu-ray = MO reborn
 
Will Blu-ray support playback of HD-DVDs?


Yes, as soon as the HD-DVD standard has been decided you should expect to see Blu-ray recorders with support for playback of HD-DVDs. However, the first generation of players are unlikely to support HD-DVD as all the details surrounding the format still haven't been finalized.

The format (HD-DVD) is being developed by the DVD Forum to meet the specific requirements of Hollywood.



No HD-DVD playback = no market acceptance = expensive MO drive
 
Panajev2001a said:
Keyword.. "unlikely" and that FAQ you are reading from is a bit outdated... ;)
Click to expand...

It's from the Blu-ray website...you know a better site? I would think Blu-ray knows more about it's own technology than say yourself? :LOL:
 
Well let's just say that the website doesn't report 50 GB dual layer discs, but only single layer discs...

Also, I am not sure that is the Sony website for Blu-Ray... look at their forums... they use quite standard phpBB...

I would expect something more...
 
Let's just leave it at agreeing of disagreeing... you are not going to convince me of Blu-Ray being dead already and I won't convince you...
 
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