TELEX
SpinWise
CD
Duplicator
Glossary
39
Disk Sector
In magnetic disks, formatting provides a geography of the platters; which
are divided into concentric circles, and these circles are further subdivided
into sectors. Although sectors vary in size depending on their position in
the disk, they have a specific capacity in bytes. This sectored framework is
found in constant angular velocity (CAV) drives, and is compatible with
the FAT used in PCs. When discussing optical discs, 'sector' is used to
refer to discrete amounts of data with a specific layout or structure along
the single spiral track.
Emulate
To test the function of a disc on a computer after formatting a complete
disc image.
Enhanced CD
A general term for various techniques that add computer software to a
music CD, producing a disc which can be played in a music player or read
by a computer. Also called CD Extra, CD Plus, hybrid CD, interactive
music CD, mixed-mode CD, pre-gap CD, or track-zero CD.
Hard Drives
Originally known as Winchester drives, these magnetic storage devices
have one or more non-removable solid platters--as opposed to the floppy-
disk drives. Hard drives come in various types, different capacities and
configurations--and are connected to the bus through a controller or
interface card. There are removable hard drives, which allow removal of
the component that contains the platters--a workable option for users with
security concerns.
HDCD
High-definition Compatible Digital. A proprietary method of enhancing
audio on CDs.
Hz
Hertz. A unit of frequency measurement. The number of cycles
(repetitions) per second.
Jewel Box/Case
The plastic clamshell case that holds a CD for shipping or for storage.
Karaoke
Literally, empty orchestra. The social sensation from Japan where people
sing along to a music track. Karaoke was largely responsible for the
success of laserdisc in Japan, thus supporting it elsewhere.
Master
The metal disc used to stamp replicas of optical discs. The tape used to
make additional recordings.
Mastering
Technically, refers to the process of creating a glass master from which
compact discs will be reproduced in quantity. In desktop recordable CD
systems, mastering is done together with premastering by the desktop CD
recorder, and the term is generally used to mean "recording."
