What Is A Minidisc - Aiwa AM-F80 Operating Instructions Manual

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WHAT IS A MINIDISC?

A Mini Disc is only 64 mm (2
diameter, about half the size of a
conventional CD. But Mini Discs can be
used to store and play back a full 80 minutes
of information. 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 → A
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 → B
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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