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

[Volker Armin Hemmann]

Am Montag, 20. August 2012, 23:12:14 schrieb 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,

hm, I also had much besser results with + media. +rw and +r. 

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