CD-R ATIP data veracity (was Re: SCSI CD drive capable of reading CD-R)

[Philip Pemberton]

In message <62159.207.145.53.202.1113851916.squirrel at 207.145.53.202>
          "Eric Smith" <eric at brouhaha.com> wrote:

> Also, if another manufacturer started making discs with ATIP data
> claiming to be from Taiyo-Yuden or Mitsui, they would get sued for
> trademark infringement, unfair competition, and fraud.  I suppose
> that might not stop manufacturers in mainland China, though.

The same thing doesn't appear to apply to DVD-R and DVD+R. There have been
reports of fake Taiyo Yuden DVD+/-R blanks floating around. Seems when
recordable DVD blanks are manufactured, the media ID block is blank. IIRC
it's written just after the discs are manufactured. Faking a T-Y Media ID
signature is no difficult task, unlike ATIP faking which would require a
stamper with a fake ATIP "pregroove wobble".
Put simply, if someone asks for a stamper with a Taiyo Yuden, Mitsubishi
Chemical or similar ATIP, the stamper manufacturer is going to want proof
that the company in question (T-Y, Mitz, ...) ordered that stamper.

Later.
-- 
Phil.                              | Acorn Risc PC600 Mk3, SA202, 64MB, 6GB,
philpem at philpem.me.uk              | ViewFinder, 10BaseT Ethernet, 2-slice,
http://www.philpem.me.uk/          | 48xCD, ARCINv6c IDE, SCSI
... S met ing's hap ening t  my k ybo rd . .