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WHAT ISA MINIDISC? m
4
m
A Mini Disc is only 64 mm (2
5/8
inches) in
diameter,
about
half
the
size
of a
conventional
CD.
But Mini Discs can be
used to store and play back a full 74 minutes
of information,
as much as a CD. Unlike a
CD, a Mini Disc comes in a plastic cartridge,
so that it can be handled with ease.
The
cartridge also protects the disc inside from
shocks, dust and scratches. Unlike cassette
tapes,
which
can become
stretched
or
tangled, a MiniDisc is an excellent durable
media.
TWO
types of discs
There are two types of MiniDiscs: "Optical
discs" and "Magneto-optical
discs".
Both
types use laser beams and optical pick-up
technology
to read recorded
information
during playback.
Optical discs +
These are playback only discs. Like CDs,
they are used as prerecorded music discs.
You cannot record or edit them. The shutter
covers the opening only on the non-labeled
side of the MD.
Recordable MO* discs + H
These are recordable discs which can be
recorded on again and again, like cassette
tapes.
The
recording
method
called
magneto-optical technology employs a laser
and
magnetism
to
record
signals.
Therefore,
the quality of recorded sound
does
not deteriorate
even
after
many
playbacks
and recordings.
The shutter
covers the opening on the both sides of the
MD.
* Magneto-optical
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