Sony MEX-R5 - Multi Disc Player Operating Instructions Manual page 52

DVD VIDEO
A disc that contains up to 8 hours of moving
pictures even though its diameter is the same as a
CD.
The data capacity of a single-layer and single-
sided DVD is 4.7 GB (Giga Byte), which is 7
times that of a CD. The data capacity of a
double-layer and single-sided DVD is 8.5 GB, a
single-layer and double-sided DVD is 9.4 GB,
and double-layer and double-sided DVD is
17 GB.
The picture data uses the MPEG 2 format, one of
the worldwide standards of digital compression
technology. The picture data is compressed to
about 1/40 (average) of its original size. The
DVD also uses a variable rate coding technology
that changes the data to be allocated according to
the status of the picture. Audio information is
recorded in a multi-channel format, such as
Dolby Digital, allowing you to enjoy a more real
audio presence.
Furthermore, various advanced functions such as
the multi-angle, multilingual, and Parental
Control functions are provided with the DVD.
DVD-RW
A DVD-RW is a recordable and rewritable disc
with the same size as the DVD VIDEO. The
DVD-RW can be recorded in two different
modes: VR mode and Video mode. VR (Video
Recording) mode enables various programming
and editing functions, some of which are limited
in the case of Video mode. Video mode complies
with DVD VIDEO format and can be played on
other DVD players while a DVD-RW recorded in
VR mode can only be played on DVD-RW
compliant players. The "DVD-RW" appearing in
this manual, and the on-screen displays refer to
DVD-RWs in VR mode.
DVD+RW
A DVD+RW is a recordable and rewritable disc.
DVD+RWs use a recording format that is
comparable to the DVD VIDEO format.
Film based software, Video based
software
DVDs can be classified as Film based or Video
based software. Film based DVDs contain the
same images (24 frames per second) that are
shown at movie theaters. Video based DVDs,
such as television dramas or sit-coms, displays
images at 30 frames (or 60 fields) per second.
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JPEG (Joint Photographic Expert Group)
Under the auspices of the International
Organization for Standardization (ISO), JPEG is
defined as a universal standard format for digital
compression and decompression of still images
for use in computer related systems. Usually, the
compression rate is variable before visible
degradation occurs. Still images are compressed
about 1/10 to 1/100 original size.
Title
The longest section of a picture or music feature
on a DVD, movie, etc., in video software, or the
entire album in audio software.
Track
Sections of a picture or a music feature on a CD
or VIDEO CD (the length of a song).