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Glossary
A
A
Aspect ratio
The horizontal to vertical ratio of the displayed image.
For standard TV's the horizontal/vertical ratio is 4:3, for
wide-screen TV's the horizontal/vertical ratio is 16:9.
Authoring
The process of encoding the source material, or the
process of adding control information to the encoded
data, or converting the data to DVD format.
B
B
Bit rate
The transfer rate.
Bit stream
The digital data generated by the various encoding
processes.
C
C
Chapter
Each chapter within a title.
Color variation signal
A signal that removes the brightnes signal from the G/
B/R signals and represents the hue and density.
Component
A video format that takes three separate video inputs
with information for the three primary colors of light to
create the video signal. There are G/B/R, Y/PB/PR and
other formats.
Composite
A synchronous composite video signal that combines a
signal combining the brightness and color frequency
signals and a standard color burst signal.
Cursor
Generally, the point where you enter numbers.
D
D
Decode
The process of decoding a signal that has been encoded
in a format standard, so that it restores to the original
signal.
Dolby Digital
The Dolby Digital (AC-3) format developed to produce
theater-like surround sound for household systems.
Consists of a maximum of 5.1 channels, three front
channels, two rear channels, and a 0.1 subwoofer
channel.
Downmix
This function converts multichannel (three channels or
more) sound formats for audio tracks to two stereo
channels. This is usually performed when the number of
program channels is larger than the number of speakers.
DTS (Digital Theater System)
A new surround format that holds more data than Dolby
Digital to provide even better surround playback.
The number of channels is the same 5.1 channel of
Dolby Digital but the use of a better audio compression
ratio during digital recording means that it has higher S/
N playback. It also has a wider dynamic range for delicate
sound separation.
E
E
Encode
The process of encoding a signal to meet a standard.
Extended K2 Processing
20 bit K2 processing extends 16 bit signals to 20 bit to
improve signal resolution, and also expands the sampling
frequency by two to improve the frequency band during
playback. This allows better sound reproduction of the
subtle nuances of the original for more realistic sound
playback.
Version 2.0 further expands this capability to 24 bit
176.4kHz/192kHz.
G
G
Geographical region playback control (Regional
code)
A system that only allows playback of a disc in
predetermined geographical regions. There are eight
regions in the world, and each region has a number
(Region No.) If the region number on the disc matches
the region number assigned to the player, you can play
the disc.
L
L
Letterbox
A technique for displaying wide screen video on a 4:3
TV without clipping the image by projecting a black, or
other color, mask across the top and bottom parts of the
screen. It is called by this name, since the appearance
is similar to a letterbox.
Linear PCM audio
A lossless compression format for converting an analog
audio signal to a digital signal.
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