04-10-2018, 09:53 AM
All commercial CDs have the copyright flag asserted, but the generation flag is not. A digital recording (via TOSLINK or S/P-DIF) is permitted, but the destination media (MD, DAT, etc) will assert the generation flag (in addition to maintaining the copyright flag). This means that you cannot make a digital copy of the first copy. Which is a reasonable compromise, intended to allow the original owner to make a copy for car use, but not to allow distribution (although these are just a couple of bits in the channel-status data, so easily modified - which is sometimes necessary in professional scenarios).
My understanding of what Mike has is different, so won't be affected the above - his CD will behave normally in a CD player connected digitally to a MD recorder or similar.
That's because it appears to be a CD with a data session that is ignored by standard CD players, but is executed by autoplay on a Windows machine. This silently installs code on the PC that interferers with attempts to copy the CD. Sony got into a lot of trouble about that: https://en.wikipedia.org/wiki/Sony_BMG_c...it_scandal - and here: https://www.technologyreview.com/s/40574...e-scandal/
That is a really good reason to turn off autoplay on Windows machines. As far as I know, the code was only for Windows machines, so MacOS or Linus should have been OK. Certainly, with all those variables, it might explain why different behaviour was reported on different machines, although it doesn't explain why it was OK in Sam's DVD drive in Mike's PC - so perhaps it's something else entirely? Either way, this is a "zombie thread" from 7 months ago - Mike has resolved the issue.
My understanding of what Mike has is different, so won't be affected the above - his CD will behave normally in a CD player connected digitally to a MD recorder or similar.
That's because it appears to be a CD with a data session that is ignored by standard CD players, but is executed by autoplay on a Windows machine. This silently installs code on the PC that interferers with attempts to copy the CD. Sony got into a lot of trouble about that: https://en.wikipedia.org/wiki/Sony_BMG_c...it_scandal - and here: https://www.technologyreview.com/s/40574...e-scandal/
That is a really good reason to turn off autoplay on Windows machines. As far as I know, the code was only for Windows machines, so MacOS or Linus should have been OK. Certainly, with all those variables, it might explain why different behaviour was reported on different machines, although it doesn't explain why it was OK in Sam's DVD drive in Mike's PC - so perhaps it's something else entirely? Either way, this is a "zombie thread" from 7 months ago - Mike has resolved the issue.
