Archived from groups: rec.audio.tech (
More info?)
In article <10eans0ngukfbfd@corp.supernews.com>,
Richard Crowley <rcrowley7@xprt.net> wrote:
>"Nick Wesh" wrote ...
>> I've been reading about music CD-R blanks and their
>> purpose (legal immunity from copyright issues)
>
>Huh? Since when did using music CDr blanks provide
>"immunity from copyright issues"? Can you provide a
>reference for this remarkable statement?
Google for "Audio Home Recording Act".
Briefly: if you use the "consumer digital audio" recording media
(which have had a royalty added into their wholesale price), in a
"consumer digital audio recorder" (one which enforces SCMS, and which
will record _only_ on the royalty-paid media, and which has also had a
royalty added into its wholesale price), and you make a copy of a
copyrighted musical work, and if this copy is made in a noncommercial
context (i.e. if you give it away to a friend), then you are immune to
either criminal or civil prosecution for copyright violation. The
inclusion of the royalties in the disc and burner prices, and the
enforcement of "only one generation of digital copying", is deemed to
be an acceptable tradeoff by The Powers That Be.
If you violate _any_ of these conditions (i.e. use a generic
computer-type data disc, or burn the disc in a computer CD-RW drive,
or do the copying in a commercial fashion), then the limited immunity
does not apply, and The Men In Black may be knockin' on your door.
>I think so, but since they cost more, most people don't do it.
There's no technical reason why they won't work for data.
The main technical difference between the two types of disc is based
on the ATIP information ("absolute time in pregroove") - some
administrative information which is physically molded into the disc in
an interesting way. The ATIP data tells the recorder how much
recording time is available on the disc, the ID of the manufacturer,
some information about the disc's recording characteristics, and the
disc's data type. The latter is "restricted use, general purpose" for
a computer data disc, and "unrestricted use" for a royalty-paid
consumer-audio disc.
Also, the consumer-audio discs often use a dye which is optimized for
burning at low speed (1x or 2x) as these discs are often burned in
real-time. Generic data discs these days are usually dye-optimized
for a high-speed burn.
--
Dave Platt <dplatt@radagast.org> AE6EO
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