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In-Reply-To: <503251b2.th6m+6glw17CHh4T%Joerg.Schilling@fokus.fraunhofer.de>
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<503251b2.th6m+6glw17CHh4T%Joerg.Schilling@fokus.fraunhofer.de>
Date: Mon, 20 Aug 2012 23:12:14 +0700
Message-ID: <CAA2qdGXDWbXxmSgLxw7zY2y=kzoT4DW0sywqYgL8ACWmOJWKpw@mail.gmail.com>
Subject: Re: [gentoo-user] new machine : DVD drive
From: Pandu Poluan <pandu@poluan.info>
To: gentoo-user@lists.gentoo.org
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On Aug 20, 2012 10:12 PM, "Joerg Schilling" <
Joerg.Schilling@fokus.fraunhofer.de> wrote:
>
> Pandu Poluan <pandu@poluan.info> wrote:
>
> > On Aug 20, 2012 8:51 PM, "Pandu Poluan" <pandu@poluan.info> wrote:
> > >
> > >
> > > On Aug 20, 2012 7:47 PM, "Andrea Conti" <alyf@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,
--047d7bea44badeeafd04c7b4c5e6
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
<p><br>
On Aug 20, 2012 10:12 PM, "Joerg Schilling" <<a href=3D"mailto=
:Joerg.Schilling@fokus.fraunhofer.de">Joerg.Schilling@fokus.fraunhofer.de</=
a>> wrote:<br>
><br>
> Pandu Poluan <<a href=3D"mailto:pandu@poluan.info">pandu@poluan.inf=
o</a>> wrote:<br>
><br>
> > On Aug 20, 2012 8:51 PM, "Pandu Poluan" <<a href=3D"=
mailto:pandu@poluan.info">pandu@poluan.info</a>> wrote:<br>
> > ><br>
> > ><br>
> > > On Aug 20, 2012 7:47 PM, "Andrea Conti" <<a hre=
f=3D"mailto:alyf@alyf.net">alyf@alyf.net</a>> wrote:<br>
><br>
> > > +RW *can* be erased, or else it won't be called RW :-)<b=
r>
> > ><br>
> > > That said, the difference is much deeper than differing meta=
data. Among<br>
> > which :<br>
> > ><br>
> > > * +RW uses Phase Modulation, -RW uses amplitude modulation. =
This gives<br>
> > +RW much more robustness than -RW<br>
><br>
> This is also wrong:<br>
><br>
><br>
> DVD+RW use 817.4 kHz in the pregrove and periodically inverts the phas=
e as<br>
> sector start marker. This is cheaper to press (as the stamper will las=
t for more<br>
> press cycles) but it is not as accurate as DVD-RW and you get floating=
bader<br>
> quality during the life cycle of the stamper.<br>
><br>
> DVD-RW uses 140.6 kHz in the pregrove and in addition lans pits betwee=
n the<br>
> groves to mark the sector start, This is much more precise than what D=
VD+RW<br>
> uses. Since aproc. 4 years, there is a new patented stamper method tha=
t uses<br>
> dints in the pregrove instead of pits on top of the land. This is as p=
recise as<br>
> the pit on land method, compatoble to this method and allows stampers =
that are<br>
> as cheap as the DVD+RW stampers. There is no degradaraion of the stamp=
er<br>
> accuracy as with DVD+RW, even with the new modified version.<br>
></p>
<p>Thanks for the technical information, although honestly, most are beyond=
me :-P </p>
<p>That said, care to refute the following page:</p>
<p> <a href=3D"http://www.myce.com/article/why-dvdrw-is-superior-to-dvd-rw-=
203/">http://www.myce.com/article/why-dvdrw-is-superior-to-dvd-rw-203/</a><=
/p>
<p>because until someone publicly refute that article, I honestly will pref=
er +RW over -RW. </p>
<p>(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 jus=
t lucky, but since experience matches expectations (based on that article),=
luck seems to not have anything to do with it.) </p>
<p>PS: I'm not trying to start a plus/minus war; I am sincerely interes=
ted, and will switch my preferred optical media if corrected. </p>
<p>Rgds, </p>
--047d7bea44badeeafd04c7b4c5e6--