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> From: "Jake Hamby" <[EMAIL PROTECTED]>
> Howard Chu wrote:
> > My Sony DVD player (DVP-C600D) displays disc titles from CD-Text, but
> > doesn't display track titles. My JVC CHX1200 12 disc changer in my car
> > displays disc and track titles on my KDMX3000 head unit. (And
> there's the
> MD
> > connection - the KDMX3000 is still the world's only single-DIN
> sized MD/CD
> > head unit. Great deck. Unfortunately, the head unit itself
> doesn't display
> > CD-Text for CDs played in its single slot. Stupid, considering that it
> > displays disc & track titles for MDs played in the same slot.)
> Yep, the KDMX3000 rocks, and at $500 from Crutchfield, it's not a
> bad deal!
Wow, the price has come down a lot over the past year. I wonder what JVC's
next trick will be...
> Speaking of CD-Text, I just tried that experiment last night, and
> discovered, as you noted, that it's not supported, unfortunately. Even
> worse was my recent experience of copying a new Ben Folds Five CD ("The
> Unauthorized Bio. of Reinhold Messner") to MD with my Sony
> MXD-D3. The disc
> and tracks are titled, but when you copy it to MD, you get a
> scrolling "TEXT
> PROTECT" message and the titles don't copy over. The previous
> BFF CD I have
> ("Whatever and Ever, Amen") has CD-Text which copies fine, so some evil
> lawyer at Sony must've decided that the copy protection bit would
> be a good
> thing to start turning on..
What a pain, I hadn't realized that the copy-protect bits were valid in the
text region too.
>
> BTW, my recently purchased HP USB CD-Writer (8210e) doesn't
> support CD-TEXT
> for reading or writing.. However, the last time I used Easy CD Creator, I
> remember there *is* an option to title an audio CD in a way that
> the Windows
> Deluxe CD player can read the titling info. This might be worth looking
> into if you only want to read the titles on your computer. However this
> works, presumably it doesn't require any special features on the CD-R, and
> who knows, perhaps some enterprising programmer will add support
> for this to
> some of the Linux CD players, if it isn't there already. If
> anyone has more
> info on how that works, I'd appreciate it..
They just keep the title info in a file on your hard drive. Nothing fancy.
They compute a serial number/checksum for each CD based on each disc's table
of contents, using the number of tracks and the length of each track. The
assumption is that this will generate a unique signature for all albums. I
believe since track lengths are encoded down to the frame, 1/80th of a
second or something, that this is pretty reliable.
The calculated checksum/signature is used as an index in the data file that
stores the title info. This is the same approach used by www.cddb.com.
There's already Linux support for cddb, so duplicating the Windows approach
is kind of silly. (And if you haven't checked out www.cddb.com yet, you
should. They have track title info for a huge number of CDs, in all
different genres. Heck, they even have the title info for *my* band's CD
online. (check out http://highlandsun.com for some kick-ass Celtic music...)
If you're copying CDs to MDs and you have access to a PC for titling, you
really need to know about this service, it'll save you hours in the long
run.)
-- Howard
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