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Double Density CD-R

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Double Density CD-R

Postby BuddhaTB on Sat Apr 12, 2003 8:35 pm

I was at Fry's today and saw these Double Density CD-R's that are Sony branded and made in Taiwan. They hold 1.3GB compared to the regular 700MB CD-R. However, on the back it stated that they could only be used on double density CD-RW drives, which I have not seen or heard of. Can someone shed some light on this technology?
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Postby craiger on Sat Apr 12, 2003 9:35 pm

1.3 wow! That is the size of some of the first hard drives right?
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Postby Inertia on Sat Apr 12, 2003 9:43 pm

This is a proprietary Sony format that is not supported by any other manufacturer. See Sony Double Density CD-RW CRX200E/A1.

It has never gone anywhere, which is not surprising due to its lack of compatibility and high media costs.

In my opinion, if you need extra capacity, skip this and go to DVD.
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Postby jase on Sat Apr 12, 2003 10:17 pm

craiger wrote:1.3 wow! That is the size of some of the first hard drives right?


lol I remember 5Mb Hard Drives mate, and I'm sure they were smaller than that as well. 1.3Gb HDDs were commonplace around 1995.

Personally I think this format is a waste of time with DVDR becoming increasingly cheap. But good spot :)
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Postby Ian on Sat Apr 12, 2003 11:48 pm

Double Density drives... Now that takes me back. We were one of the first places to take a look at Sony's drive:

http://www.cdrlabs.com/reviews/index.php?reviewid=47

Double Density was pretty much killed by recordable DVD's and the promise of some of the other high density CD technologies.. none of which actually came about.
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Postby Reg-da-Ripper on Mon Apr 14, 2003 1:26 pm

Ian wrote:....
Double Density was pretty much killed by recordable DVD's and the promise of some of the other high density CD technologies.. none of which actually came about.


It looks as if Optorite/Accesstek will be the first manufacturer to use Sanyo's HD-BURN technology (mentioned here) for their DVD±RW/CD-RW drive, the DD0203. Here are the features mentioned on Optorite's and Accesstek's websites:

BURN-Proof: prevents Buffer Under Run;
HD-BURN: record twice the capacity of CD-R media;
8 MB internal buffer;
Motorized easy touch tray loading;
Firmware upgradeable;
Installation: horizontal and vertical;
4X Max. DVD+R and -R Write, 2.4X Max. DVD+RW Rewrite, 2X Max.
DVD-RW Rewrite, and 12X Max. DVD-ROM Reading;
24X Max. CD-R Write, 10X Max. CD-RW Rewrite and 40X Max. CD-ROM Reading
My solution to the Plextor vs. Lite-On debate: Buy 'em both! :)
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Postby dodecahedron on Mon Apr 14, 2003 3:40 pm

yes, as an additional feature in a DVD burner, it sounds nice (like plextor's new CD recorder). neat idea.
but just a CD recorder with the HD-Burn (again, like the plex) can't compete with a DVD burner, such a product wouldn't succeed.
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Postby Tycoon on Sun May 04, 2003 3:21 pm

I have recently bought sony double density 1.3b media (50 pieces).
When i tried it with my cd writer it did not work. Now i want to buy a dvd writer which can also write on sony double density 1.3gb media.
Can this Optorite/Accesstek DD0203 write on sony double density 1.3gb media?
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Postby Ian on Sun May 04, 2003 3:38 pm

Tycoon wrote:I have recently bought sony double density 1.3b media (50 pieces).
When i tried it with my cd writer it did not work. Now i want to buy a dvd writer which can also write on sony double density 1.3gb media.
Can this Optorite/Accesstek DD0203 write on sony double density 1.3gb media?
Thanx


No. Only Sony Double Density drives can read/write to that media.
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Postby Tycoon on Mon May 05, 2003 1:32 pm

Hi, i am still not completely convinced that optorite DD0203 cannot write on sony double density media. The sony double density media 1.3gb has smaller pitch than normal cdr thats why it provides 1.3gb. Optorite DD0203 HD-Burn works the same way by making the pitch smaller than the normal cdr so doesnt that mean that both are similar and it can write on sony double density 1.3gb cdr. If not have anyone tried it or its just a guess that it cannot write.
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Postby CDRecorder on Mon May 05, 2003 2:06 pm

Check out this thread: HD-BURN Technology!

Edit: that thread said that they are shrinking pit size, not track pitch. Sounds like the Sony DD discs won't work with HD-Burn. Sorry. :cry:
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Postby Tycoon on Mon May 05, 2003 3:13 pm

LiteOnGuy wrote:Check out this thread: HD-BURN Technology!

Edit: that thread said that they are shrinking pit size, not track pitch. Sounds like the Sony DD discs won't work with HD-Burn. Sorry. :cry:


Check these two websites
http://www.cdrinfo.com/Sections/Articles/Specific.asp?ArticleHeadline=Sony%20Double%20Density%20CD%20Format&Series=0
http://www.digital-sanyo.com/BURN-Proof/HD-BURN/structure.html

Note: The pit lenght of sony double density 1.3gb is the same as the HD-BURN pit lenght shrinking 0.62um. which means both of them are allowing more data by the same technology so why wouldnt the sony double density media which is 0.62um work with optorite DD0203 which is changing the normal cds pit length to 0.62. so it means it is able to write at that pit lenght, so it should be able to write on sony double density 1.3gb media.
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