Additional information
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English
Letter box
A type of picture playback with the normal (4:3) TV
screen. Black bars are shown at the top and bottom of
the image to allow playing of wide-screen (16:9) DVD
movie without cutting off any sides of the image on a
4:3 TV.
Linear PCM audio
Stands for "pulse code modulation". Linear PCM is the
usual digital method without compression, used for
audio playback of DVD Video discs, Audio CD discs,
etc.
Menu
Most DVD VIDEO or Video CD/SVCD discs provide a
menu, through which users can select a desired
playback material, condition, etc.
MP3
MP3 is an audio data reduction format, which stands
for MPEG-1 Audio Layer 3. Using MP3, you can
achieve a data reduction of about 1:10.
MPEG
A family of Standards for compressing audio-visual
information. "MPEG" standards include MPEG-1,
MPEG-2 and MPEG-4. Video CD and MP3 are based on
MPEG-1, while DVD is based on MPEG-2. MPEG
stands for Moving Picture coding Experts Group.
Multisession
A method of adding data to a CD-R/CD-RW in more
than one recording session using the Track-At-Once
method.
NTSC (National television system committee)
A black & white and color television system format
used in U.S.A., Canada, Mexico and Japan.
Packet Writing
A method of writing data on a CD-R/CD-RW in small
increments. Packets can be of fixed or variable length.
PAL (Phase Alternation by Line)
A color television system format used extensively in
Western Europe.
Pan scan
A type of picture playback with the normal (4:3) TV
screen, which is panned and zoomed across the wider
movie picture, chopping off the left and right sides.
Parental lock
A DVD function that prevents undesired viewing by
children depending on disc contents. You need a
password to play back a locked disc in the normal
condition. Otherwise, undesirable scenes are
automatically skipped or replaced with other pictures.
PBC
PBC stands for "Playback control" and is a method of
controlling disc play for Video CDs (VCD). You are able
to interact with the disc through menus.
Progressive scan
Progressive scan displays all the horizontal lines of a
picture at one time, as a single frame. A progressive-
scan DVD player converts the interlaced (480i) video
from DVD into progressive (480p) format for
connection to a progressive display. It dramatically
increases the vertical resolution.
Region code
Code identifying a geographic region of compatibility
for a DVD.
Sampling frequency
The rate at which measurements of an audio signal
are taken during A/D and D/A conversion. The
measure is samples per second.
Surround
An audio system with more than two (left and right)
channels, usually including rear channels, etc.
S-video
A video signal which improves picture quality over
standard composite connections. Used on Super VHS,
DVD, high end TV monitors, etc.
Title
The largest division on DVD VIDEO.
Track
The smallest division on Audio CD, Video CD and
SVCD discs.
Transfer rate
The rate of transferring digital data. Usually the
measure is in baud per second. The DVD system
applies variable transfer rate system for high
efficiency.
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