- Moderator
- #21
Jeff Kilgroe
Well-known member
My info comes directly from statements by Sony and Samsung. The quad-layer disc spec isn't even finalized yet and as of two months ago, prototypes still required a more powerful diode. The optical system within the player must be able to focus at a different depth for each layer.
BD spec allows up to a theoretical 12 layers in a disc and this has not been revised yet. 16 layers are just a myth unless someone has invented a new substrate medium to make layers out of. Only so many layers can physically fit without making the disc thicker.
Also the article you have referenced is a year old and was discussed last year as being erroneous, or more likely, lost in translation. If you read the Japanese / English tag in that image in the article or follow to the Japanese article, you'll see that it's a prototype multi-layer disc mechanism, with companion multi-layer disc.
To use true quad-layer discs, 100GB on a single side, the player needs to have the proper optics to focus at 4 separate depths. I am not aware of any players on the market that are capable of doing this. Sony has stated that none of their current models, including the PS3, are intended to do this. Anyone who has told you or has said that the PS3 will be upgradable to play quad-layer discs is just taking a wild-ass guess or is just making stuff up.
Quad layer discs are still in Sony's roadmap as a potential 2010 or later thing for home video, if ever. Many are expecting quad-layer discs to make an appearance next summer, along with companion drives, for writable media targeted at data storage and archival.
When it comes down to quad-layer compatibility on current players, I would not recommend buying in anticipation of such or hold your breath thinking that it will work with any current players.
BD spec allows up to a theoretical 12 layers in a disc and this has not been revised yet. 16 layers are just a myth unless someone has invented a new substrate medium to make layers out of. Only so many layers can physically fit without making the disc thicker.
Also the article you have referenced is a year old and was discussed last year as being erroneous, or more likely, lost in translation. If you read the Japanese / English tag in that image in the article or follow to the Japanese article, you'll see that it's a prototype multi-layer disc mechanism, with companion multi-layer disc.
To use true quad-layer discs, 100GB on a single side, the player needs to have the proper optics to focus at 4 separate depths. I am not aware of any players on the market that are capable of doing this. Sony has stated that none of their current models, including the PS3, are intended to do this. Anyone who has told you or has said that the PS3 will be upgradable to play quad-layer discs is just taking a wild-ass guess or is just making stuff up.
Quad layer discs are still in Sony's roadmap as a potential 2010 or later thing for home video, if ever. Many are expecting quad-layer discs to make an appearance next summer, along with companion drives, for writable media targeted at data storage and archival.
When it comes down to quad-layer compatibility on current players, I would not recommend buying in anticipation of such or hold your breath thinking that it will work with any current players.