CD data recovery?

[Lennart Sorensen]

On Mon, Sep 20, 2004 at 04:22:44PM -0400, James Knott wrote:
> Henry Spencer wrote:
> >A low-tech :-) friend of mine asked me to inquire about this...
> >
> >He's got a couple of CDs that are physically broken.  (Shouldn't have put
> >them in checked baggage...)  They're not mass-market items, and it would
> >be difficult to replace them without repeating some fairly expensive
> >travels.  Anybody know of an outfit hereabouts that could recover their
> >contents, either as data files or as duplicate disks?
> >
> >(These are music CDs, as it happens, but I've come close to needing this
> >once or twice for damaged CDROMs, and now he's got me curious too.)
> 
> I've never heard of such as service, and you can be sure it would be 
> very expensive, if even possible.  Anyone attempting such a recovery 
> would have to rejoin the pieces, to extremely close tolerances.  Even 
> then they'd still have problems recovering the data.

I wonder if someone could scan the cd surface at very high resolution
(maybe with a laser beam) and then take the scans of each piece and lign
up the tracks that way and create a virtual cd image and recover the
data from that.  Hmmm.  Does sound expensive.

Lennart Sorensen
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