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44
GLOSSARY
480i/480p
Indicates the number of scanning lines and scanning format of
an image signal.
480i indicates 480 scanning lines with interlace format, and
480p indicates 480 scanning lines with progressive format.
Aspect ratio
Aspect ratio refers to the length to height ratio of TV screens.
The ratio of a standard TV is 4:3, while the ratio of a high-
definition or wide TV is 16:9. The letter box allows you to enjoy
a picture with a wider perspective.
Bitstream
The digital form of multi-channel audio data (e.g., 5.1-channel)
before it is decoded into its various channels.
Chapter / Title
Chapter is the smallest division and title is the largest division
on a DVD VIDEO. A chapter is a division of a title and similar to
a track for Video CD or Audio CD.
Component video
Video signals with three channels of separate information that
makes up the picture. There are some types of component
video, such as R/G/B and Y/Cb(Pb)/Cr(Pr).
Composite video
A single video signal commonly used in most consumer video
products that contains all luminance, color, and synchronization
information.
Dolby Digital®
A six-channel system consisting of left, center, right, left rear,
right rear and LFE (Low-Frequency Effect channel, for use with a
sub-woofer) channels. It requires a Dolby Digital® decoder,
either in the player or in an external receiver to regenerate the
sound. All processing is done in the digital domain.
Not all Dolby Digital discs contain six (5.1) channels of
information.
DTS® (Digital Theater Systems)
DTS® stands for Digital Theater Systems. DTS® is a Digital
Surround audio encoding format configured with six (5.1)
channels, similar to Dolby Digital®. It requires a DTS® decoder,
either in the player or in an external receiver to regenerate the
sound. All processing is done in the digital domain.
Not all DTS discs contain six (5.1) channels of information.
DVD-R
DVD-R is a recordable disc that is the same size as a DVD-
Video. Contents can be recorded only once to a DVD-R,and will
have the same format as a DVD-Video.
DVD-RW
DVD-RW is a recordable and rewritable disc that is the same
size as a DVD-Video. DVD-RW has two different modes: VR
mode and Video mode.DVD created in video mode has the
same format as a DVD-Video ,while discs created in VR(Video
Recording)mode allow the contents to be programmed or edited
DVD+R
DVD+R is a recordable disc that is the same size as a DVD-
Video. Contents can be recorded only once to a DVD+R,and will
have the same format as a DVD-Video.
DVD+RW
DVD+RW is a recordable and rewritable disc. DVD+RW use a
recording format that is comparable to a DVD-Video format.
Interlace output
NTSC, the video signal standard, has 480 interlaced (I) scan
lines, The Interlaced scanning system places lines of the
second half of the picture in-between lines of the first half of the
picture.
JPEG
A popular file format for still image compression and storage.
JPEG stands for “Joint Photographic Experts Group”. There are
two sub-types of the JPEG format as follows.
• Baseline JPEG: used for digital cameras, the web, etc.
• Lossless JPEG: an old type, rarely used now.
Linear PCM audio
PCM stands for “Pulse Code Modulation”. Linear PCM is the
usual method for digitally encoding audio without compression,
and is used for the audio tracks on DVD VIDEO discs, Audio
CDs, etc.
MP3
MP3 (MPEG1 audio layer 3) is a compressed audio file format.
Files are recognized by their file extension “.mp3” or “.MP3”.
MPEG
MPEG stands for “Motion Picture Experts Group”. This is an
international standard for compression of moving images.
On some DVDs, digital audio has been compressed and
recorded in this format.
NTSC (National Television System Committee)
The initials stand for National Television Standards Committee.
This is the committee that established the standards for
television systems in the United States. The NTSC standard
broadcasts 525 or 480 lines of resolution per second, and 30
frames per second of refresh rate, 60 Hz field frequency. NTSC
TV system is widely used in USA, Canada, Latin America and
Taiwan etc.
PAL (Phase Alternation by Line)
PAL (Phase Alteration Line) is the color television broadcast
standard throughout the Western Europe (except in France,
where SECAM is the standard), Australia, China, Singapore and
Malaysia etc. It has 625 lines of vertical resolution per second
and 25 frames per second refresh rate, 50 Hz field frequency.
PBC
Playback Control. A special feature on a Video CD or Super
VCD that enables interactive use.
S-Video
A video signal which improves picture quality over standard
composite connections. Used on Super VHS, DVD, high end TV
monitors, etc.
Track
SVCD, VCD, Audio CD discs use tracks to divide up the content
of a disc.
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