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Old Aug 18, 2002, 05:34 PM
wilt wilt is offline
Join Date: Jul 2000
Posts: 587

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Thats what they said when 2x CD writers came about.....
Now there @ 48x.
Never underesitmate the power of technology.

Everything is possible, including 8x writers and DVD9 recorders.
Old Aug 18, 2002, 07:17 PM
gadgerman gadgerman is offline
Join Date: Apr 2002
Location: Bolton
Posts: 164

The faster you write the more errors are present and it's only improvements in CRC's and error checking thathas allowed faster writing ,thats why audio CD's can't be burned passed 24X even if you use a 48X writer.
Old Aug 18, 2002, 07:20 PM
gadgerman gadgerman is offline
Join Date: Apr 2002
Location: Bolton
Posts: 164

As for DVD 9 the 2 layers are manufactured separately and welded together to get a writer to duplicate this it would have to seamlessly write ,reset and refocus and burn without affecting the other layer reliably
Old Aug 19, 2002, 08:32 AM
Turkules Turkules is offline
Join Date: Sep 2001
Posts: 180

Welded together? Where did u get that information from? Itz all about how the data is contained on the disc, dvd writers that r available 2day, use lasers that write to single layers, Im very sure that in the future a DVD writer capable of burning 2 2 layers will be possible. Anything that is in existence can be reverse engineered and so on, the mere fact that dual layered DVDs (DVD9) exists, almost guarantees that in the near future it will be possible. As for the welding of discs, where do u guys come up with this stuff?
Old Aug 19, 2002, 08:38 AM
gambit_360 gambit_360 is offline
Join Date: Jan 2001
Posts: 2,784

Just a few comments to add to the above:

The word to use is not "welded", it's pressed.

And to those that believe that DVD9 DVD-R's are possible, let me ask you this? How on earth is the laser going to burn the second layer WITHOUT disturbing the first layer considering that the laser will pass through it?

You cannot compare original DVD9's with DVD9 DVD-R's because they are NOT manufactured the same way.
Old Aug 19, 2002, 09:07 AM
nochexisking nochexisking is offline
Junior Member
Join Date: Aug 2001
Location: uk
Posts: 21

to quote pioneer "Pioneer announced a DVD-R write-once format in 1997 capable of recording up to 3.95 GB per side into the dye layer of a single or double sided disc. Cyanine dye similar to that used in CD-R discs is modified, or "tuned," for the DVD 635/650 nm red laser. The resulting disc appears violet in color when viewed from the readout side. A 4.7 GB version 2 was introduced in 2000 with two incompatible formats. The General format requires a 650 nm recording laser, and is intended for computer applications. It cannot record copy-protected discs. The Authoring format requires a 635 nm recording laser, and is intended for mastering applications by professional DVD content producers and publishers. It accomodates the Cutting Master Format, but cannot record copy-protected discs. Information is recorded in a wobbled pre-groove. Unrecorded address information is contained in molded pits and lands, called pre-pits. DVD-R General discs must be written in a DVD-R General recorder. Likewise, DVD-R Authoring discs can only be written in a DVD Authoring recorder. DVD-R discs can be read in most DVD drives"
You can already buy double sided discs, and the technology is already in the drives to write to a dvd9 format double density Im pretty sure it wont be long.Check out the links for double sided discs

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