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Posted by Tarkus on 10/02/07 18:14
UltimatePatriot wrote:
> On Sun, 30 Sep 2007 10:22:57 -0700, Tarkus <karnevil9@atlantabraves.net>
> wrote:
>
>> Just to add to what I said about being backwards compatible, many people
>> CHOOSE to burn at slower speeds, because it arguably creates a more
>> robust and dependable recording.
>
> Back in the bad old days of single power recording drives "contrast
> ratio" was a terrible issue. The speed the disc surface passed under the
> head had a directly proportional relationship to the contrast ratio of
> the ablatement given to the recording layer.
>
> It is not supposed to be the case any longer with multi-power level
> laser heads in the recorders of today. One should be able to achieve the
> same contrast ratio on a 16X recording as one would find on a 4x
> recording.
>
> SHOULD being the key word here. As far as I have been able to tell,
> that IS the case, and we are not supposed to have the same worries that
> plagued the optical disc storage realm in days past.
>
> IF the power level is indeed set at different levels for different
> speeds, then this is entirely a non-issue. The contrast ratio of a
> recording is 100% based on the level of impingement the laser provides
> onto the disc recording layer as it passes under the head. There are no
> other parameters.
>
> IF the variable power level output drives are a bunch of hype, and do
> not actually perform as claimed, then you assertion is valid. Otherwise,
> it is old school, and no longer applicable to the real world.
Thanks, I hadn't heard that before, and is good to know.
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