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echo: osdebate
to: Dave Ings
from: Antti Kurenniemi
date: 2002-12-31 14:40:56
subject: Re: What is this copy protection supposed to do

From: "Antti Kurenniemi" 

I don't know if it was a digital rip or not, I just used the EasyCD creator
by Roxio to burn a copy of a cd like I always do. I think it is a digital
rip...?

Anyways, I tried it again today with a ripping program (cdcopy), and I was
able to rip all tracks to Wav's, and then burn those tracks to another
blank cd, and even that works without any problems. I think this is weird,
and not terribly impressive protection technology 


Antti Kurenniemi

"Dave Ings"  wrote in message
news:3e112e85$1{at}w3.nls.net...
> It was supposed to prevent digital extraction of the CDs data, like you do
> when you rip the CD to your hard drive. It did this (roughly) by injecting
> various errors into the disk when mastered, errors that an analog CD
player
> would recover from or otherwise ignore in an inaudible fashion, but that
> would cause digital extraction to fail.
>
> Disks encoded with one of the several similar schemes "out
there" in fact
do
> not meet Phillips' CD specs, and I believe at one point Phillips was
legally
> insisting that any disk so mastered not carry the official CD logo
anywhere
> on the packaging.
>
> I have no idea why the copy protection didn't work. You sure you did a
> digital and not an analog rip? I think YMMV was the bottom line on these
> copy hacks, since apparently sometimes the disks wouldn't even play where
> they "should" have, in regular CD players (depending on
brand, age etc).
> --
> Regards,
> Dave Ings,
> Toronto, Canada

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