Re: [dvd-discuss] The next step in the Balkanization of DVD-R media

[microlenz(at)earthlink.net]

Maybe this should be renamed the "Babelization" of DVD-R...or in the case of 
press releases "Babbleization"

On 10 Oct 2002 at 14:43, Ole Craig wrote:

Date sent:      	Thu, 10 Oct 2002 14:43:03 -0400 (EDT)
From:           	Ole Craig <olc@cs.umass.edu>
To:             	dvd-discuss@eon.law.harvard.edu
Subject:        	Re: [dvd-discuss] The next step in the Balkanization of DVD-R media
Send reply to:  	dvd-discuss@eon.law.harvard.edu

> On 10/10/02 at 14:10, 'twas brillig and Seth Johnson scrobe:
> > 
> > Most salient passage:
> > 
> > Two Formats for Two Markets: Professional and Consumer 
> > 
> > To support consumer applications for DVD­R, the DVD Forum
> > determined that another  type of DVD­R media was necessary.
> > The newest member of the DVD­R family uses a  recording
> > wavelength of 650nm, and discs are recorded on different
> > drives than the  existing 635nm format. This new format is
> > called ``DVD­R for General'', because it is  aimed at a
> > broad base of applications. Meanwhile, the existing 635nm
> > format has been renamed ``DVD­R for Authoring'' to reflect
> > its use in professional applications.  Why are there two
> > formats? The key reason for the introduction of DVD­R for
> > General  media is that it contains content protection
> > measures that make it physically impossible to  make
> > bit­for­bit copies of CSS encrypted entertainment titles.
> 
>  Anyone have any speculations on what such "measures" could be
> incorporated into the *format*? The previous spec already contained
> preburnt CSS key areas.. 
> 
>  Are we missing something? (The above would appear to imply
> that, with the "DVD-R for Authoring" discs with which we're already
> familiar, it *is* possible to burn a bit-for-bit copy of a
> CSS-obfuscated disc.)
> 
>   Ole
> --
> Ole Craig * UNIX; postmaster, news, web; SGI martyr * CS Computing
> Facility, UMass * <www.cs.umass.edu/~olc/pgppubkey.txt> for public key
> 
> perl -e 'print$i=pack(c5,(41*2),sqrt(7056),(unpack(c,H)-2),oct(115),10);'
>