English
INTRODUCTION
Audio
and
video terms defined
A Aspect ratio -
An
expression for the width
of
the picture relative to the height and seen when
as a rectangular
"TV
image. For example, if the aspect ratio is 4:3 (read as 4 by
3),
the shape
of
that picture is 4 units wide
by
3 units high. The standard
"TV
aspect ratios are 4:3 and 16:9.
C
CD-R,
CD-RW
- Abbreviations for Recordable
(R)
and ReWriteable
(RW)
Compact Disc
(CD).
Data can be added to a CD-R once only and
to
a CD-RW more than once.
CD-ROM
- The abbreviation for Read Only Memory
(ROM)
on a Compact Disc
(CD),
which
allows no data to be added.
Chapter - A main division
of
contents
in
a
DVD
title.
Component video - Also called YPbPr, this video signal is split into three parts: luminance
and
two
color signals for considerably better resolution than can be provided
by
either
composite
or
S-video signals. This more complex signal also requires the use
of
component
connection jacks, which are not available on all televisions
or
video components.
Composite video - The simplest
of
three types
of
video signal, which combines rather than
separates brightness (black and white) and color information. It provides the lowest resolution
of
the three, but is compatible with the broadest range
of
televisions and other video
compo-
nents and requires a simple video cable connection to RCA jacks.
D Dolby Digital - A perceptual coding system for audio, developed by Dolby Laboratories and
accepted as
an
international standard. Dolby Digital is the most common means
of
encoding
multi-channel audio.
ffi'
~~
-The logo representing Dolby Digital.
DTS -
An
abbreviation
for
Digital Theater Systems, a type
of
multi-channel surround sound
format used on certain CDs and many DVDs.
DIG
I
TAL
~.
- The logo representing
DTS.
SURROUND
DVD -
An
abbreviation most commonly known
to
mean Digital Video Disc or Digital Versatile
Disc. The audio/video/data storage system is based on 12-cm optical discs.
DVD-R, DVD+R, DVD-RW, DVO+RW - Abbreviations for Recordable
(R)
and ReWriteable
(RW)
Digital Video (or Versatile) Disc
(DVD).
Data
can be added
to
a DVD-R or +R once only,
and
to
a DVD-RW
or
+RW more than once.
OVD-ROM - The abbreviation for Read Only Memory (ROM)
on
a Digital Video (or Versatile)
Disc
(DVD),
which allows no data to be added.
DVD video - A standard
for
storing and reproducing audio and video on DVD-ROM discs,
based
on
MPEG video, Dolby Digital audio, and other proprietary data formats.
OVR - An abbreviation
for
Digital Video Recording, sometimes used interchangeably with
PVR,
for Personal Video Recording.
G Gracenote - Music recognition technology and related data provided as part
of
the service
contracted for by Bose.
IR - An abbreviation for infrared. Pertains
to
the type
of
remote that sends/rece.ives
commands
on
an
infrared light beam.
L Letterbox - A video format that has
an
aspect ratio wider than 4:3 and is shown with black
bars above and below the picture.
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