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From: rob@raksha.eng.ohio-state.edu (Rob Carriere)
Newsgroups: rec.audio,rec.music.cd,gnu.misc.discuss
Subject: Re: DAT copy protection
Message-ID: <3041@quanta.eng.ohio-state.edu>
Date: 15 Sep 89 05:15:12 GMT
References: <sZ3O9Ae00WB_B0829S@andrew.cmu.edu>
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Reply-To: rob@raksha.eng.ohio-state.edu (Rob Carriere)
Organization: Ohio State Univ, College of Engineering
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In article <sZ3O9Ae00WB_B0829S@andrew.cmu.edu> yh0a+@andrew.cmu.edu (Yary Richard Phillip Hluchan) writes:
>I think it makes more sense for the DAT copy-protection to work like this:
>
>DAT can take 44.1 kHz data ==> 48 kHz
>DAT will not take 48 kHz data
>
>44.1 kHz is the rate CD's are recorded at, 48 kHz is the DAT rate.
>Of course, this method would not let you make DAT-to-DAT tapes of your
>daughters first glockenspiel recital, but the record companies don't care
>about that!
>
>(Note also that the copy-protection will not prevent you from re-digitizing the
>analogue output)
>
>Question: Has anyone SEEN the specs, the DETAILS?

From the latest IEEE Institute:
1) DATs will contain elctronics to allow them to record at the proper sampling
rate to digital CD->DAT.  Digital DAT->DAT is obviously no problem.

2) The recorder will read the header info from any source being copied
digitally.  This header will specify (among other things) whether the source
is 1) CD, 2) copyrighted DAT, 3) non-copyrighted DAT.  It will allow limited
copies in cases 1 and 2 (a different number, I think it was 2 and 3, but I
don't have newsletter here) and unlimited copies in case 3).  Analog to
digital copies will be flagged as 2), to prevent you from making unlimited
copies of copyrighted analog material.

SR