Erik.Boralv@hci.uu.se
Fri, 11 Dec 1998 18:52:20 +0100 (MET)
erik writes:
>So what is the deal with the industry making CDs so we can't copy them?
>(I understand why they want to, but I'm curious how they are doing it)
Maybe this thread does not belong to this group... anyway, let's keep
it short.
I've seen at least three approaches:
1. Insert wrong check-sum codes on the original CD. This makes the
CD-R think something went wrong.
2. Make the original CD contain more than 650 MB data (74 min. music).
Most CD-Rs cannot deal with this, or CD-R media I should say.
3. SCMS, sub-code on the CD prevents making copies from a copy.
I recommend reading http://www.fadden.com/cdrfaq/
Cheers,
Erik.Boralv@hci.uu.se Webmaster: www.cmd.uu.se/AcidJazz/
Human-Computer Interaction Admin : acid-jazz@ucsd.edu
Uppsala University, SWEDEN
This archive was generated by hypermail 2.0b3 on Fri Dec 11 1998 - 18:55:01 MET