parameters of CD-ROMs are identical to those defined in the Red Book. The
use of the data it contains is different. While audio CDs can be played at
only one speed, CD-ROM drives exist with a range of speed options from normal
(1x) to four times normal speed (4x) and so on and now 52x. As the speed
increases the access time decreases.
differ from CD audio discs in two important ways.
The data on a
CD-ROM disc are divided into sectors which contain both user data and other
data for control and (additional) error protection. The data on a CD-ROM are
contained in files. All CD-ROMs therefore, need a file system to enable the
computer to access the required file easily and quickly.
capacity of our CD-ROMs
682 Mbytes* of
user data in CD-ROM mode 1 (2048 bytes/record) OR
up to 78 minutes of digital audio @44.1Khz OR a combination of the
above (enhanced CD).