Three HD Layers Today, Ten Tomorrow

HD DVD's dual-layer 30GB and Blu-ray's dual-layer 50GB media simply won't cut it for movies in the future or at least media manufacturers do not believe they will. Multi-layered discs seem to be the expected road to take for the high definition war. Ritek has claimed to have successfully designed a deca-layer (10 layers) disc that can be applied to both HD DVD and Blu-ray formats. That would equal to 150GB for HD DVD and 250GB for Blu-ray, assuming 15GB and 25GB layers, respectively. Ritek officials, however, remind us that the real limitation comes from the reader and writer laser diode technology, not the physical disc.

Meanwhile, Toshiba Corporation seems satisfied with their developed triple-layer HD DVD-ROM (read only) disc with a capacity of 51 gigabytes (3 x 17GB). Where'd they get that number? Yes, HD DVD discs normally hold 15GB per layer, but an extra 2GB has been squeezed in thanks to improvement in disc mastering technology. So basically, you have the Blu-ray dual-layer or the HD-DVD triple-layer for ~50GB of space. Thanks to the same physical disc structure as a standard DVD, Toshiba has said that three layer discs are not much costlier to produce. Toshiba aims to secure approval of the new disc by the DVD Forum within 2007.

News source: DailyTech

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15 Comments

Click only needed an estimated 10 GB on his BluRay DL, and all the remaining space was filled up with extras and sound. Why the hell would they use it for now?

The more space you have, the higher quality data you can store. Look at DVD to HD-DVD or BluRay. Where a DVD of a movie might use 4GB to store a 720x480 version of a film, the same movie in HD-DVD might use 10GB to store a 1920x1080 version.

With 10x the space, you can either use less compression, or increase resolution, or both. You can also put more movies on the same disc. Imagine having the entire Matrix collection (10 DVDs) on one 10 layer HD-DVD disc.

If you give them the space, they'll find a way to fill it.

jeez, who cares? this is so stupid... why dont they focus more on increase burning speeds rather than cramming the most crap onto a dvd? with current burning speeds, the time it would take to burn 30 gigs + would take forever. people like things to be fast, not take 20 hours for a damn dvd to burn.

do you honestly think the movie industry cares how long it takes you to burn a disc? This isn't about the end-user writing to blank disc. This is about the industry using the discs to produce products, like movies and games.

Jack31081 said,
do you honestly think the movie industry cares how long it takes you to burn a disc? This isn't about the end-user writing to blank disc. This is about the industry using the discs to produce products, like movies and games.

yeah, im sure they dont care... but who is going to sit for 10+ hours to copy a disk? there is only so much a customer is going to take before they just decide to stop buying it.

Sure, if you're going to limit the thickness of the disc, which I imagine is the case. Also, the laser needs to be able to differentiate one layer from the next. If the layers are too thin or too close together, that may not be possible (this is alluded to in the first paragraph).

(maximum thickness of disc) / (minimum thickness of layer + minimum layer separation)

Whats the point of so much space on the disk, I think 15 GB is more than enough for any movie even at 1080p and thanks to DivX and XviD you can have movies that are better quality than DVD and cosiderably smaller size. And won't adding all these layers stop the disk from actually fitting in the drive? Will newer DVD players have to be cup holders?

It currently takes about 5 minutes to burn a regular DVD at the fastest speed. At this point I think BR and HD-DVD can only be burned at 2x. That means that to burn one after filling it up completely, it would take FIVE HOURS. At this point, this stuff is useless not only because of that but because of a lack of a market winner.

Also like has been said before, uncompressed picture and audio in 1080p still doesn't take up the original 25GB size.

RealFduch said,
someone still doesn't know that 1x speeds are different?
hahaha

Someone doesn't know how to be coherent in their writing?
HAHAHAHA


^ Well they can increase the size and then the speeds since the beginning isn't about people burning discs, it's about producing consumer movies, and games.

It would seem better to use the HVD technology that is mature and allready had workign protoypes before all the research money was thrown t HD-DVD and Blu-Ray . Seeing as HVD is a hell of a lot faster to read and write data and stores 500GB to 1TB and even more by now.

Seeing as they have to make ew drives and all that anyway for these.

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