Re: [gentoo-user] new machine : DVD drive

[Pandu Poluan]

On Aug 20, 2012 10:12 PM, "Joerg Schilling" <
Joerg.Schilling@××××××××××××××××.de> wrote:
>
> Pandu Poluan <pandu@××××××.info> wrote:
>
> > On Aug 20, 2012 8:51 PM, "Pandu Poluan" <pandu@××××××.info> wrote:
> > >
> > >
> > > On Aug 20, 2012 7:47 PM, "Andrea Conti" <alyf@××××.net> wrote:
>
> > > +RW *can* be erased, or else it won't be called RW :-)
> > >
> > > That said, the difference is much deeper than differing metadata.
Among
> > which :
> > >
> > > * +RW uses Phase Modulation, -RW uses amplitude modulation. This gives
> > +RW much more robustness than -RW
>
> This is also wrong:
>
>
> DVD+RW use 817.4 kHz in the pregrove and periodically inverts the phase as
> sector start marker. This is cheaper to press (as the stamper will last
for more
> press cycles) but it is not as accurate as DVD-RW and you get floating
bader
> quality during the life cycle of the stamper.
>
> DVD-RW uses 140.6 kHz in the pregrove and in addition lans pits between
the
> groves to mark the sector start, This is much more precise than what
DVD+RW
> uses. Since aproc. 4 years, there is a new patented stamper method that
uses
> dints in the pregrove instead of pits on top of the land. This is as
precise as
> the pit on land method, compatoble to this method and allows stampers
that are
> as cheap as the DVD+RW stampers. There is no degradaraion of the stamper
> accuracy as with DVD+RW, even with the new modified version.
>

Thanks for the technical information, although honestly, most are beyond me
:-P

That said, care to refute the following page:

http://www.myce.com/article/why-dvdrw-is-superior-to-dvd-rw-203/

because until someone publicly refute that article, I honestly will prefer
+RW over -RW.

(And, anecdotally, ever since I burn DVD's, I already had a stack of
failing -RW discs, while having only two failing +RW discs. I might be just
lucky, but since experience matches expectations (based on that article),
luck seems to not have anything to do with it.)

PS: I'm not trying to start a plus/minus war; I am sincerely interested,
and will switch my preferred optical media if corrected.

Rgds,