Re: [ARSCLIST] CDR Serial Number

["Bewley, Nigel" <Nigel.Bewley@xxxxx>]

There is a standard for the code: not between manufacturers I concede
but there is a standard within a manufacturer.  We use discs from two
manufacturers: Taiyo Yuden and MAM-E (who manufacture under licence from
Mitsui).  The serial number will indicate the date and time of
manufacture, the machine used etc etc.  We have the code to decipher the
Taiyo Yuden serial number - we've never had the need or interest to -
but as I've written before on this list we use the serial number as an
identifier that is unique to the disc.  The discs we buy can be 'lot
traced'.  We would find this invaluable if, for instance, discs from a
certain lot 'went wrong'.  We would then use the serial numbers (which
are searchable in our catalogue) to weed out potential rogues from the
collections and re-transfer or otherwise remedy the problem.

Regards and greetings from a grey but mild London

Nigel

Nigel Bewley
British Library Sound Archive

"Many, but not all, CD and DVD recordable and rewritable discs contain a
lot
code in the clear inner ring. This is determined by the manufacturer for
traceability purposes. There is no standard for this code. It is
possible,
but not probable, that multiple discs would have the same lot code".

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