
Originally Posted by
kool kitty89
I think the former point may be true on the density (hence near-standard CD-ROM hardware being able to read it), though I'm not sure if narrower tracks, like Sony's double-density CD format would also work in that context.
On the latter part, I think that's untrue, the GD-ROM drive is constant angular velocity, but later CD-ROM and DVD drives are too, unlike laserdiscs and floppy discs though, I think a constant linear (not angular) data density is maintained and a bitrate is regulated by other methods. (otherwise you'd have higher bitrates externally -which really doesn't matter except for timing sensitive streaming data like video -in which case you could simply limit for the lowest common data rate)
It wouldn't make sense to waste space like that, plus newer CD (and DVD) drives use similar drives. (and the constant angular velocity would be the only thing alluding to constant angular data density of the format)