Sony MDP-A1 - Glossary of Technical Terms; Definitions of Disc Types and Functions

Glossary
ACS/AMS Automatic Chapter Sensor/ Automatic Music Sensor is a function in the player that allows the laser beam
to sense the beginning of chapters or tracks on a disc.
CAV Discs Constant Angular Velocity (CAV) or standard-play discs rotate at a constant 1800 r/min. Each track
traced by the laser for a single rotation of the disc produces a single frame. Up to 54,000 frames make up each side of
the disc, for up to 30 minutes of play. Each frame has a number that is stored with other data on the disc. When
searching for a particular location on CAV discs, you must enter that “frame number’.
Chapters
Some
laser
discs
are
divided
into
sections,
called
chapters.
These
are
analogous
to
tracks
on
COs.
Such
discs
usually
have a
numbered
list
of
chapters on
the jacket
or label.
Each
chapter
has
been
numbered
for
easy
location
when you
use
Chapter Search,
Repeat
or
Program
functions.
CLV Discs Constant Linear Velocity (CLV) or extended-play discs double maximum playing time to 60 minutes by
varying the rotational speed from a maximum of 1800 r/min to a minimum of 600 r/min as the laser beam moves away
from
the
center
of
the
disc.
The
disc
surface
therefore
moves
past
the
laser
head
at
a
constant
rate,
and
each
track
is
longer than its predecessor. For this reason, Variable Speed Play, Freeze Frame, and Step Play are not possible with
CLV discs, so when searching for a scene you must enter the time on CLV discs instead of the frame number.
Digital
Sound
Recordings
Sound
translated
into
digital
signals
has
a
better
signal-to-noise
ratio.
Therefore,
digital
sound
recordings
offer
a
higher
quality
reproduction
than the
altemative,
analog
recordings
(found on
LPs
and
older
audio
cassette
tapes).
However,
some
laser
discs
have
been recorded in
the higher-quality
digital
audio
signal
as
well
as
the
conventional
analog
type
signal.
This
player
reproduces
both
signals
with
priority
given
to
the
digital
signal
when
it ig
encountered.
indexes Signs marked in a chapter or track so that you can find a particular point on the disc easily.
MULTI AUDIO Disc _ Different sounds are recorded on analog and digital tracks. You can select either sound by
switching one to the other.
SAP
Second
Audio
Programs
are
double
soundtrack
recordings
found
on
bilingual
and
karaoke
(sing-along)
recordings.
Two
completely
different
sound
programs
have
been recorded on
the
disc.
By
pressing
the
AUDIO
MONITOR
button,
you
can
switch
from
one
sound
track
to
the
other.
TOC
=
Table
of
Contents
signals
are
recorded
on
some
LDs.
When
playing
back
LDs
with
TOC
signals,
additional
functions
can
be
enjoyed
such as;
Shuffle
Play
and Delete
Shuffle
Play.
Tracks CDs and CDVs are divided into sections, called tracks. Each track has been numbered for easy location
when you use Track Search, Repeat or Program functions. The tracks usually correspond to the selections on the disc.
46 Additional information
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