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Chapter 6: Glossary
DVD (Digital Versatile Disc): DVD VIDEO is a disc featuring
high video/audio quality, made possible by large recording ca-
pacity of video and audio signals of movie software, etc. and by
digital signal processing. DVD AUDIO has been desired to pro-
vide even higher audio quality than DVD VIDEO by using high-
bit, high sampling rate processing.
VIDEO CD (VCD): This is a CD containing moving picture. By
compressing video data to about 1/120 and audio data to about
1/6, a 12 cm disc with the same size as ordinary music CD can
store moving pictures and audio for up to about 74 minutes.
The VCD includes the P.B.C.-incompatible discs with only the
playback capability (Version 1.1) and P.B.C.-compatible discs
with the menu playback and special playback capabilities (Ver-
sion 2.0)
MPEG (Moving Picture Expert Group) (DVD, VCD): A digital
video and audio compression and decompression system which
is standardized as an international standard.
Decoder: A device for restoring standard audio signal from audio
data recorded based on coding into DVD data, etc. This pro-
cessing is referred to as decoding.
Downmixing: Conversion of multichannel audio signals of DVD
or DTS-CD into 2-channel stereo signals.
Sampling rate: Sampling refers to converting an analog signal
into digital signal by slicing the analog signal into fine parts at
a certain time interval and digitizing every sliced part. The sam-
pling rate is the count of slicing per second. The original sound
can be reproduced more faithfully when the sampling rate is
higher.
DVF-R9030
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