Operating instructions
Additional information
08
53
En
Glossary
Analog audio
Direct representation of sound by an 
electrical signal. See also 
Digital audio
.
Aspect ratio
The width of a TV screen relative to its 
height. Conventional TVs are 4:3; 
widescreen models are 16:9.
Bonus Group 
(DVD-Audio 
only)
An ‘extra’ group on some DVD-Audio 
discs that requires a key number to 
access. 
Browsable 
pictures 
(DVD-Audio 
only)
A feature of some DVD-Audio discs in 
which the user can browse still pictures 
recorded on the disc as the audio is 
played. See also 
Slideshow
.
Digital audio
Indirect representation of sound using 
numbers. See also 
Sampling frequency
and 
Analog audio
.
Dolby 
Digital
*1
1
A multi-channel audio encoding system 
developed by Dolby Laboratories that 
enables far more audio to be stored on a 
disc than PCM encoding. See also 
PCM 
(Pulse Code Modulation)
.
DRM
DRM (Digital Rights Management) copy 
protection is a technology designed to 
prevent unauthorized copying by 
restricting playback, etc. of material on 
devices other the PC (or other WMA 
recording equipment) used to record it. 
For detailed information, please see the 
instruction manuals or help files that 
came with your PC (or other WMA 
recording equipment) and/or software.
DTS
*2
A multi-channel audio encoding system 
developed by Digital Theater Systems 
that enables far more audio to be stored 
on a disc than PCM encoding. See also 
PCM (Pulse Code Modulation)
.
EXIF 
(Exchangeabl
e Image File)
A file format developed by Fuji Photo 
Film for digital still cameras. Digital 
cameras from various manuafcturers 
use this compressed file format which 
carries date, time and thumbnail 
information, as well as the picture data.
File 
extension
A tag added to the end of a filename to 
indicate the type of file. For example, 
“.mp3” indicates an MP3 file.
ISO 9660 
format
International standard for the volume 
and file structure of CD-ROM discs.
JPEG
A standard file format used for still 
images. JPEG files are identified by the 
file extension “.jpg”.
MP3
MP3 (MPEG1 audio layer 3) is a 
compressed stereo audio file format. 
Files are recognized by their file 
extension “.mp3”.
MPEG audio
An audio format used on Video CD/
Super VCDs and some DVD discs.
Packed PCM 
(DVD-Audio 
only)
A lossless compression system that 
enables more PCM audio to be stored 
on a DVD-Audio disc than would 
otherwise be possible.
PBC
(PlayBack 
Control)
A system of navigating a Video CD/
Super VCD through on-screen menus 
recorded onto the disc.
PCM
(Pulse Code 
Modulation)
Digital audio encoding system found on 
CDs. Good quality, but requires a lot of 
data compared to Dolby Digital, DTS 
and MPEG encoded audio. See also 
Digital audio
.
Progressive 
scan video
All the lines that make up a video 
picture are updated in one pass 
(compared to interlace which takes two 
passes to update the whole picture).
Regions
(DVD-Video 
only)
These associate DVD-Video discs and 
players with particular areas of the 
world. See 
DVD-Video regions
 on 
page 47 for more information.
Sampling 
frequency
The rate at which sound is measured to 
be turned into digital audio data. The 
higher the rate, the better the sound 
quality. CD is 44.1 kHz; DVD can be up 
to 96 kHz. See also 
Digital audio
.
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