Future DVDs could hold about one hundred times the capacity that current discs can hold. That would mean about 472 hours of film on one disc the size of a current DVD disc. You could fit every single Simpsons episode ever made onto one disc using this technology. Lecturer Dr Peter Torok revealed the technique called Multiplexed Optical Data Storage (Mods) at the Asia-Pacific Data Storage Conference 2004 in Taiwan. Current DVDs have up to two layers and can hold up to 8.5GB. Work is already advancing on the next generation of storage.
Technologies including HD-DVD which can hold 30GB of data and Blu-Ray discs that offer about 50GB of data are currently battling to become the next standard. The technique developed by the Imperial College team could offer much more on a disc. Researchers believe they can create a disc that has four layers, each holding a massive 250GB of data (equivalent of 118 hours of video). The Mods technique is laser-based like existing DVD and CD technology. A disc is made up of tiny grooves filled with pits that reflect the laser as a series of ones and zeroes.
Current discs carry one bit of data per pit. But the researchers say that by using angled ridges in the pits, they can alter the way light behaves. The end result is a way of encoding and detecting up to 10 times more information from one pit.
Source:
BBC News
Current discs carry one bit of data per pit. But the researchers say that by using angled ridges in the pits, they can alter the way light behaves. The end result is a way of encoding and detecting up to 10 times more information from one pit.
Source:
BBC News
Four-Thousand And Seventy hour's-worth of present-day-quality dvd video !!!!!! Makes ya drool, don't it ?
As member geestar20 above suggests, it would take an *awfully* long time to fully burn just one complete disc (I don't know of any generally-available 1 TB HDDs). And I suppose the disc would have to be handled with rubber gloves and a pair of salad-tongs or something. The slightest speck of dust could probably wipe out 10 hour's of video, maybe.
Let's just hope they will have appropriately-powerful error-correction capability, and will be burnable in several separate sessions (to be finalized when all sessions are complete).
(Nah...... this is all science-fiction-stuff). We ain't never gonna see no 1 TB disc anytime soon!)
Still ............. it's fun to dream. :-)
Really, this has gotta be all Science-Fiction stuff. All on ONE disc? I doubt it.
It would take you a lifetime just to fully burn one of these things. And would you want to entrust an entire lifetime's-worth of data/film/audio/video/whatever to a single, fragile 3-1/2" disc? Not me. Whew!
