DVD 9's

[C0De917]

Just a quick question. Are dvd 9's available as blanks for recording for the end consumer? Are standard DVD recorders able to even burn these dics if so. Just wondering if this is possible yet, or in the near future. Any info is appreciated. Thanx.

[apaw]

do you mean single sided dvd-9(none available,yes?)
or if you mean 4.7 on both sides disc(available)

dvd can be double layered on each side (up to dvd-18)!

what your thinking, i don't think will be available soon due to commercial concerns.

[C0De917]

Yeah, the single sided dvd 9's.

[rogain69]

duallayer dvd-r and compatable burners would be sweet, but if the MPAA has anything to do with it, it will never happen.

[tonyp12]

Probably will never see dual layer DVDR's.

Production made DVD-9 are pressed and not laser burned.

It is nearly impossible for a laser to burn to two layers without
affecting one of the non intended layer.

[Marco33]

Probably will never see dual layer DVDR's.

Production made DVD-9 are pressed and not laser burned.

It is nearly impossible for a laser to burn to two layers without
affecting one of the non intended layer.

I believe he's right. They are burned seperate then pressed together.

[tonyp12]

Not "burned", but more a type of plastic injection molding fabrication.


Only way I can see burned DVD-9 would be if the DVDR comes
in two halfs so they would only be half the thinkness of a regular disc.

The bottom half would have a semi translucent layer (thin layer of gold)

And after you burn the two parts you would "glue" them together,
having a 2 part epoxy around the hub should be enough.

The DVD burner would need to be manufactured with the idea
of half as thin discs and of a "gold" layer.

Never heard that any manufacture are planning to do that.

[Thorn]

For more information, do a forum search folks. This has been discussed in great detail. It has nothing to do with the MPAA or anything else political. You simply can't burn two layers with the current DVD-R technology, so you need a new technology to go above 4.7 GB on a side for recordable media.

[Marco33]

With VHS you can tell the VCR to record at a certain speed. 2, 4 or 6 hours. What if that theory was apllied to DVD.

[tonyp12]

Different recording "speeds" have already been applied to DVD.

No problem to fit 8hours on one DVD-5 (VHS quility)

Only reason we want to dvdr-9 is so we can copy a production made
dvd without re-encoding.

[kenneth2112]

although, i read somewhere that the dvd burners/players of the future will be using a different laser than those seen today. the laser will be shifted slightly towards the blue range of the spectrum. hopefully it doesn't make the present day products obsolete like beta tapes due to incompatibility of formats. i'm not sure whether an altered wavelength of the laser will really change the actual amount of info a dvd can hold. if the logic behind lithography used in processor manufacturing can be applied to dvd's, then more info could in fact be stored in the same amount of space. i'm not sure how far off this technology is, but we'll see.

[kenneth2112]

sure enough, there's a post about this "blue ray" on the dvd recorder page. check latest posts. this is why these forums are invaluable.