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Glossary for DVD Player
Aspect ratio
The ratio of vertical and horizontal sizes of a displayed image. The
horizontal vs. vertical ratio of conventional TVs is 4:3, and that of
wide-screen TVs is 16:9.
Chapter
The smallest division on DVD VIDEO. It is a division of a title and
similar to a track for CD or VCD.
Composite video signal
A video signal comprised of three kinds of signals combined: an
image signal made up of luminance and chrominance signals using
the frequency multiplication technique; burst signal providing the
basis for color reproduction; and synchronization signal.
Component video signal
A video signal system where parts of information necessary for
reproducing image signal comprised of the three primary colors of
light are transmitted via separate signal lines. Types of signal, such
as R/G/B, Y/P
B/PR, etc., are available.
Disc menu
A screen display prepared for allowing selection of images, sounds,
subtitles, multi-angle, etc. recorded on DVD VIDEO.
Interlaced scanning
In the conventional video system, a picture is shown on the display
monitor in two halves. 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 still-picture data compression system proposed by the Joint
Photographic Expert Group, which features little distortion in image
quality in spite of its high compression ratio.
Linear PCM (PCM: Pulse Code Modulation)
A system for converting analog sound signal to digital signal for
later processing, with no data compression used in conversion.
Letter box
A method of displaying wide images like movies in on a 4:3 TV
screen with no part of the image deleted, by placing black bands on
the top and bottom of the screen. This name has derived from the
screen form looking literally like a letter box.
MP3
A file format with a sound data compression system. “MP3” is the
abbreviation of Motion Picture Experts Group 1 (or MPEG-1) Audio
Layer 3. By using MP3 format, one CD-R or CD-RW can contain
about 10 times as much data volume as a regular CD can.
Multi-angle
By recording multiple scenes progressing at the same time in a
single title, the user can select view angles. This feature is called the
multi-angle function.
Multichannel
DVD VIDEO has been designed to have each soundtrack constitute
one sound field. Multichannel refers to a structure of sound tracks
having three or more channels.
Multilanguage
When a title is created to cope with multiple languages, it is
generally called a multilanguage title.
Parental lock
A feature of this system to automatically determine whether or not
to reproduce particular DVD VIDEO software by comparing its
parental level (a measure of undesirability of scenes, etc. from
educational viewpoint) set for the software beforehand with that set
on this system by the user; if the software’s level is less restrictive
than the user-set level, it will be reproduced.
Playback control (PBC)
Refers to the signal recorded on VCD/SVCD for controlling
reproduction. By using menu screens recorded on VCD/SVCD that
supports PBC, you can enjoy interactive-type software as well as
software having a search function.
Progressive scanning
By progressive scanning, all the horizontal lines of a picture are
displayed at one time, as a single frame. This system can convert the
interlaced video from DVD VIDEO into progressive format for
connection to a progressive TV. It dramatically increases the vertical
resolution.
Region code
A system for allowing discs to be played back only in the regions
designated beforehand. All the countries in the world are divided
into six regions and each region is identified by a specified region
code (or region number). If the region code of a disc matches that of
a player, the player can play back the disc.
Surround
A system for creating three-dimensional sound fields full of realism
by arranging multiple speakers around the listener.
Sampling frequency
Frequency of sampling data when analog data is converted to digital
data. Sampling frequency numerically represents how many times
the original analog signal is sampled per second.
Transfer rate
The rate of transferring digital data. Usually the measure is in bit per
second (bps). The DVD system applies a variable transfer rate
system for high efficiency.
EN47-56RX-DV3SL[J]f.pm5 02.4.19, 16:0256