BluRay durability question.

[mwmorph]

I just saw some info on the difference between HDDVD and BluRay. Apperantly, HDDVD and BluRay both use blue lasers, but HDDVD sets the information 0.6mm from the surface whuich allows for more distortion so less bits can be packed inot the same area. Now BluRay is only 0.1mm from the surface which allows for less laser distortion which allows for denser data, but what happens when it gets a very small scratch? I mean entire tracks can be ruined by a tiny hairline scratch with no chance of fixing it since the scratch will penetrate the data layer unlike the safer HDDVD data layer distance.

Even if yuo fill in the scratch with say carnuba wax, it will still be missing the pits and bumps that were destroyed by the scratch and any sort of disk polishing to get rid of the scratch will destroy the entire disk. Now, im sure sony has a way to help tihs situation, so can anyone tell me what they are diong to prevent catastrophic data loss like this short of manufacturing every disk from some sort of synthetic diamond covering?

 

[Maximilian]

I heard theyre manufacturing every disk with some sort of synthetic diamond covering.

 

[PSUstoekl]

from what i've sseen of blu-ray discs (pcitures and reports), they say that a majority of the disc will be made of paper. that, and there could be some zip-disk-like protector. i'm sure that the blu-ray discs will be much less easily scratched than current-gen DVDs and CDs.

 

[PSUstoekl]

synthetic diamond covering would be pretty cool.

 

[DaveSimmons]

I've read somewhere that TDK is making their "armor" anti-scratch coating available to the blu-ray group. This is supposedly 100X as scratch resistant as a normal DVD.

 

[mwmorph]

I just hope it dosent drive prices up. DVDs cost too much as it is. the armor idesa seems pretty cool, but the floppy disk thing,im not sure itll work. I mean early DVD ram had this thing too and it sorta jsut flopped. now DVD ram is just a disk.