[Table of Contents]


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [ARSCLIST] Further thoughts on the new CLIR report. DVDs



Mike, et al,

Is there a reasonable amount of interleaving as on CDs?

Steve Smolian

----- Original Message ----- From: "Mike Richter" <mrichter@xxxxxxx>
To: <ARSCLIST@xxxxxxxxxxxx>
Sent: Saturday, March 25, 2006 9:38 PM
Subject: Re: [ARSCLIST] Further thoughts on the new CLIR report. DVDs



steven c wrote:

Question for the technically knowledgeable...

Since CD's and DVD's are (AFAIK) more or less the "same animal" and
operate by pressing (or "burning") pits into the surface of a plastic
disc, why should there be any difference in the lifespan of the two?

Do the littler "holes" fill themselves up more rapidly?

The materials are different, though similar. In particular, the dyes proved for recordable CDs are not usable for DVD.


The data density is higher on DVD than on CD. As a result, apart from ECC it takes less damage to lose information from a DVD than from a CD.

I believer there are also additional failure modes for DVD, notably those associated with dual layers.

Mike
--
mrichter@xxxxxxx
http://www.mrichter.com/


-- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.385 / Virus Database: 268.3.1/291 - Release Date: 3/24/2006




[Subject index] [Index for current month] [Table of Contents]