English
Glossary
Aspect ratio
The ratio of horizontal and vertical sizes of a displayed image. The horizontal vs. vertical ratio of conventional TVs is 4:3 and that of
Component video signal
A video signal system where elements 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/PB/PR, etc., are available.
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.
Dolby Digital
This is a digital audio compression technology that was developed by Dolby Laboratories. Dolby Digital encoding method
Dolby Pro Logic
Dolby Surround encoding format records the left front channel, right front channel, center channel, and surround channel (monaural) signals into 2 channels.
DTS Digital Surround
Another discrete 5.1 channel digital audio format, available on CD, LD, and DVD software, developed by Digital Theater Systems, Inc.
Compared to Dolby Digital, audio compression rate is relatively low. This fact allows DTS Digital Surround format to add breadth and depth to the reproduced sounds. As a result, DTS Digital Surround features natural, solid and clear sound.
Interlaced scanning
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-channel
DVD VIDEO has been designed to have each soundtrack constitute one sound field.
Multi-language
When a title is created to cope with multiple languages, it is generally called a multilanguage title.
Playback control (PBC)
Refers to the signal recorded on SVCD/VCD for controlling reproduction. By using menu screens recorded on SVCD/VCD that supports PBC, you can enjoy
Progressive scanning
By progressive scanning, all the horizontal lines of a picture are displayed at one time as a single frame on a TV compatible with NTSC color system. This system can convert the interlaced video from DVD VIDEO into progressive format for a progressive TV. It dramatically increases the vertical resolution.
Region code
A system for allowing discs to be played 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 to that of a player, the player can play back the disc.
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.
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
JPEG
A
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
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