Blu-rays sale percentage tracking

[joeorc]

Vetteman94 said:
But we arent argueing that HVD is a cd based technology, we were argueing that Blu-ray is or is not an HVD type technology. Sure in the end it is all optical media but again thats not what the arguement was. Blu-ray has no hologaphic data layer, only mulitple metal layers, it only has one laser as well. And yeah the modifies everything, they has to up the drive motor for faster spinning speeds, the had to add 2 additional lasers, and had to up the power supply within to accommodate the highe powered green lasers. The only thing left over that even resembles the blu-ray drive is the disc tray and the blue laser they are using.

but that is the thing, your saying that Blu-Ray is not a holographic base technology, but without the technology would there be any HOLOGRAPHIC DISC based TECHNOLOGY? there is many type's of HOLOGRAPHIC BASED TECHNOLOGY.

example you can just use a Blue laser to read or write hologram data with red being used for addressing:

(1) (High Voltage Differential) See SCSI and differential signaling.

(2) (Holographic Versatile Disc) A high-capacity optical disc from the HVD Forum (www.hvd-forum.org) that combines single beam holographic storage and DVD technologies to provide cartridge capacities reaching 1TB and beyond. Formed in 2005 as the HVD Alliance, the first HVD standards were released in 2007 for 100GB read-only (ECMA-378) and 200GB recordable (ECMA-377) formats.

HVD uses the conventional CD/DVD pit layer for addressing the disc, on top of which is the holographic recording layer. A red laser reads the addresses, while a green or blue laser reads and writes the holograms.

Single Beam Holography

Throughout the history of holographic storage research, two separate laser beams have been used to write the holograms at the intersecting point. Using Optware's Collinear Holography, HVD combines the two lasers into one lens, which reduces the size and cost of the mechanism. Seeholographic storage.

 

 

example:

We hear about holographic storage time and again, but look around — do you see any holographic drive arrays around you? Didn’t think so. At the moment it’s just not cost-effective (compared with plain ol’ HDDs) and not fast enough (compared with SSDs and other flash arrays). That doesn’t mean it’ll be an exotic technology forever, though: GE is hard at work making it more compatible with existing technology, and thinks they’ve come up with something good. Their optics labs have increased reflectivity in their media to the point where a standard Blu-ray laser can be used to read them, though nothing is said about writing.

The resultant discs, the same size as CDs and DVDs, would be able to hold 500GB at current densities, going up to 1.6GBTB in densities achievable in a year or two. What does this mean for you? Probably nothing, but it’s good to know they’re all hard at work, right?

Maybe in 2011 you’ll be able to buy a modified Blu-ray drive (assuming the format is still around) that will have a mode for reading these holographic discs. You might even be able to get a special drive to write on ‘em. Seems a bit weird talking about “next-generation” optical technologies when almost all media is going online, but there’s always a use for discs like these. Assuming the discs aren’t too volatile, this kind of storage capacity would be great for backups.

Aaanyway, don’t worry your little head about it. When something happens, you’ll know (because we’ll tell you). In the meantime, get your holographic storage shirt here.