Dual DVD Capacity CALLING ALL PROGRAMMERS

Can sum1 plz invent dual capacity dvds i need them. And if it cannot be done y?

I heard rumours that Sony/Phillips/One of those bigshot companies invented a dvd that holds 19x the original size.

 

yer programmers engineers all the same to me

an if there invented y r ppl still rippin dvds reducin quality then burning them. It shud b as simple as to prees a button an get a exact duplicate. (for backup purposes only of course)

 

Ok I apologise for offending you by getting my progrmmers and engirneers mixed up. The term Dual I mean so you can store twice as much info as a normal DVD.
(4.7GB x 2)
Can u please link me to these full DVD Backup Programs?

 

THX

 

Ha ASH,
Don't look now but what software does this forum support ?
DVDXcopy can help you loads.
Why don't you buy some,It's GREAT !!!!!

 

Are you talking about the BLUE Laser DVD ?
Sony came out with it but it costs 17,000 dollars ?

 

DVD X Copy is another
1)rip it
2)reduce quality
3)Burn it without menus and at reduced quality

I'm lookin for more of a
1)Rip entire dvd
2)Reduce nothing
3)Keep Menus

or even just keep the menus PLZ help

 

Praetor
If you want to get technical the DVD lazer is about 635nm,(635-650) which is about red in colour. The CD lazer is around 780nm(770-830) also may be seen as red. The human eye is rated at 400nm to 700nm, but some can see up to 800nm.
What ashlvsya probally wants is Blu-Ray. These discs can hold a lot of information and use 405nm lazer and holds upto 50Gb a single disc side. So the engineers are helping you. Dual capacity in my opinon was not a good idea, can cause reading problems and can not be burnt (cann`t have a layer opaque in whant to read through it)._X_X_X_X_X_[small]I am not a number
I am a Free Man[/small]

 

Thank you Prisoner;
You are exactly right. The price of BLUE is coming down but it will take awhile for it to be in my price range ,about $300.00 instead of $13,000.00 .

 

Say Ash;
I think you are getting mixed up between DVD X copy and the infamous DVD X copy Xpress.

DVDX copy gives you menus and all the xtras and will give you a choice as where to put everything.Good Luck on your mission.

 

deago you appear to be right thanx

 

Dual layered DVD's can be bought, but cannot be burnt too, so it is irrelevant. They need to be pressed, so you really need to be making a lot of copies of the same disc to warrant spending the money on the pressing machine.

Oops, i quoted you, too late now

All DVD Drive lasers are actually red and have been for some time. The difference between DVD and CD lasers, is the intensity of the burn and the focusing of the lens. DVD lasers can burn pits 6 times smaller than CD lasers.

Blue laser systems such as Blu Ray are out in Japan, but you are talking a couple of thousand £'s for them and they are not accepted by standalone DVD players. They can burn pits that are up to 12 times thinner/smaller than DVD R, with a data tranfer rate of somewhere around 36Mbits a sec. Sony are bringing out a similar system with a data transfer rate of around 9Mbytes a sec, twice as fast as blu Ray (72Mbits/sec).

***Note: i said 36MBits for Blu Ray and 9MBytes for Sony (bytes = bits x8)***

Blu Ray and other HD DVD devices are being looked at for replacement on the current systems used today, by the DVD Forum. It is hope that backward compatiblitiy will be achieved, where you can still play your old DVD's on the new systems, though a dual laser system will be available.

The Sony system will start with 23.8GB discs and aim to have 50GB discs available by middle of 2005. The future is 100GB discs in an un-specified time. The models can be bought right now for $3,000 and support a Ultra-wide 160 SCSI interface. The price expectancy on the DVD media for them are to be around $45 each, so its for any of you real loaded bast*rds who can afford that sort of money. However, it is really aimed at the professional market so i expect it willl be businesses or such that are using them.

Plasmo has also announced a Blue laser system coming into effect very soon with 30GB disc cappacity and the future aim of 60GB and 120 GB within ten years.

For any or you technical wizards here is the actual difference in technical terms between Blu Ray and current systems:

[bold]DVD-R[/bold]

Parameter Ver 1.0 Authoring use General use
Number of Sides 1 or 2 1 or 2
Capacity (GB) 3.95 4.7 4.7
Recording method Organic dye layer
Laser wavelength 635/650nm 635nm 650nm
Min pit length (microns) 0.44 0.40 0.40
Track pitch (microns) 0.80 0.74 0.74
Laser wavelength 635/650nm 635nm 650nm
Pre-pit addressing increment increment decrement
Serialisation for CPRM No Yes
Pre-recording No Yes
Track format Wobble pre-groove
Modulation & error correction 8 to 16 & RSPC

[bold]Blu Ray[/bold]

Recording capacity: 23.3GB/25GB/27GB
Laser wavelength: 405nm (blue-violet laser)
Lens numerical aperture (NA): 0.85
Data transfer rate: 36Mbps
Disc diameter: 120mm
Disc thickness: 1.2mm (optical transmittance
protection layer: 0.1mm)
Recording format: Phase change recording
Tracking format: Groove recording
Tracking pitch: 0.32um
Shortest pit length: 0.160/0.149/0.138um
Recording phase density: 16.8/18.0/19.5Gbit/inch2
Video recording format: MPEG2 video
Audio recording format: AC3, MPEG1, Layer2, etc.
Video and audio multiplexing format: MPEG2 transport stream
Cartridge dimension: Approximately 129 x 131 x 7mm

Now doesn't everyone feel really educated about the future of DVD. You must have missed my thread on the future of DVD.

:-( My fingers are sore typing all that. Im not proof reading it so dont be nasty abnout spelling and missing words

Chris

 

If I missed it, now I have it. The thing I noticed was your repeat of 635/650. I think you mean 635nm for authoritative and 645nm for general (I think that is what it is or in reverse). Thanks for the info on Blu-Ray, it still looks to be in development. Some of the product specs I read have it with similar lazer tilts so new Blu-Ray readers should be able to read DVD.

Between DVD and CD the reason for the smaller pits is the wavelength advantage (smaller wavelength, smaller size allowed). From what I have seen the smaller the wavelength, the larger the intensity needed. A compromise between low energy for high wavelengths and high energy for low wavelengths. But now I am geting into the lazer science, and that would take lots of time to explain.

 

No, you have it in the right order. The 650nm was the original specification for the DVD R 4.7GB. It may well be 645nm now, im not o sure.

I wonder what HD DVD system will be the future.....