Glossary
TELEX SpinWise CD Duplicator
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Mode
Under the ISO 9660, a CD-ROM sector can be Mode 1 or Mode 2.
Mode 1 allocates2048 bytes for user data, plus a third layer of error
detection and error correction codes. This is the Mode that provides the
highest integrity for computer data.
Mode 2 allocates 2336 bytes for user data, and no third layer of error
detection and error correction. This mode is considered appropriate for
segments of music, graphics and video, especially in CD-ROM-XA and
CD-I implementations.
Multimedia
Information in more than one form, such as text, still images, sound,
animation, and video. Usually implies that the information is presented by
a computer.
Protective
Coating
Optical discs are given a clear plastic or lacquer coat that protects the
metallic layer. Even with this coating, small scratches, pressure, dirt and
other markings can make the disc unreadable. The coating also prevents
air from reaching and oxidizing the metallized layer--which would render
the disc unreadable
Track-At-Once
With Track-at-Once writing mode, a CD-Recorder will record one track at
a time. In between every two tracks (unless you are only recording a single
track). The CD-Recorder laser will stop while the hard disc prepared for
the contents of the next track. Each time the laser is stopped, it writes Run-
Out blocks. When starting again, it writes Run-In blocks (a total of 7
blocks).These are ignored by CD-ROM readers and so do not disturb data
transmission, but in some audio players you might hear a click between
tracks. This is why disc-at-Once recording is preferable for audio discs.
Wave
A Wave file (.WAV) is a type of sound file which stores digitized analog
signals.
Yellow Book
The book which sets out the standard developed by Philips and Sony for
the physical format of compact discs to be used for information storage
(CD-ROM).
