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▌480i/480p (576i/576p)
Indicates the number of scanning lines and scanning format
of an image signal.
480i/576i indicates 480/576 scanning lines with interlaced
format, and 480p/576p indicates 480/576 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-screen TV is 16:9.
▌Bit Stream
The digital form of multi-channel audio data (e.g. 5.1-chan-
nel) before it is decoded into its various channels.
▌Chapter / Title
Chapter is a division of a video title on a DVD disc.
▌Component Video
Video signals with three channels of separate information
that makes up the picture. There are several 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.
▌CPRM (Content Protection for Recordable Media)
CPRM is a technology developed to prevent digital content
from being copied more than once.
▌DivX
®
VOD
DivX
®
VOD (video-on-demand) service is designed to protect
copyrights of digital videos. Through an online registration
process, DivX
®
VOD prevents unauthorized downloads or file
sharing. For more information, please visit: http://www.divx.
com/vod.
▌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
®
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.
▌HDCP (High-bandwidth Digital Content Protection)
HDCP is developed by Intel Corporation to ensure the
integrity of digital content transmitted via HDMI/DVI interface.
▌HDMI (High-Definition Multimedia Interface)
HDMI is an all-digital interface which transmits
uncompressed high-definition video and multi-channel digital
audio from any audio/video source to display devices via a
single cable.
▌Interlaced / Progressive Scan
The two modes refer to the methods by which a video image
is updated. In ‘Interlaced Scan’ mode, image is updated by
alternating sets of odd and even scan lines. In ‘Progressive
Scan’ mode, scan lines for an image are refreshed in every
pass and by a sequential order.
▌JPEG (Joint Photographic Experts Group)
A popular file format for still image compression and storage.
There are two sub-types of the JPEG formats: (1) Baseline
JPEG: used for digital cameras, the web, etc. (2) Lossless
JPEG: an old type, rarely used now.
▌Linear PCM (Pulse Code Modulation) Audio
Linear PCM is a method to digitally encoding audio without
compression, and is used for the audio tracks on DVD-Video
discs, Audio CDs, etc.
▌MP3
MP3 (MPEG-1 audio layer 3) is a compressed audio file
format. Files are recognized by their file extension .mp3 or
.MP3.
▌MPEG (Motion Picture Experts Group)
MPEG is an international standard for compressing digital
video/audio content. MPEG-1 is used for VCD and music.
MPEG-2 is used for SVCD and DVD-Video. MPEG-4 is used
for DVD-Video and other digital videos.
▌NTSC (National Television System 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.
▌WMA (Windows Media Audio)
WMA is an audio codec standard proposed by Microsoft.
Music/audio files which are compressed using this standard
come with the file extension, .wma or .WMA.
Glossary
81


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