Sony MHC-GNZ9D Operating Instructions Manual page 89

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 of its original size. The DVD also
uses the variable rate coding technology that
changes the data to be allocated according to the
status of the picture.
The audio data is recorded in Dolby Digital as
well as in PCM, allowing you to enjoy more
realistic 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
that is the same size as a DVD VIDEO. The
DVD-RW has two different modes: VR mode
and Video mode. DVD-RWs created in Video
mode have the same format as a DVD VIDEO,
while discs created in VR (Video Recording)
mode allow the contents to be programmed or
edited.
DVD+RW
A DVD+RW (plus RW) is a recordable and
rewritable disc. DVD+RWs use a recording
format that is comparable to the DVD VIDEO
format.
File
A JPEG image recorded on a DATA CD or a
DivX video on a DATA CD/DATA DVD*.
("File" is an exclusive definition for this
system.) A single file consists of a single image
or movie.
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.
Index (CD) / Video Index (VIDEO CD)
A number that divides a track into sections to
easily locate the point you want on a VIDEO CD
or a CD. Depending on the disc, no indexes may
be recorded.
Interlace format
(Interlaced scanning)
The Interlace format is the NTSC standard
method for displaying TV images at 30 frames
per second. Each frame is scanned twice -
alternately between the even numbered scanning
lines and then odd numbered scanning lines, at
60 times per second.
Menu Playback
Playback using the menu screens recorded on
VIDEO CDs with PBC functions. You can enjoy
simple interactive software using the menu
playback function.
Multi-angle function
Various angles, or viewpoints of the video
camera, for a scene are recorded on some DVDs.
Multilingual function
Several languages for the sound or subtitles in a
picture are recorded on some DVDs.
Multi Session
This is a recording method that enables adding
of data using the Track-At-Once method.
Conventional CDs begin at a CD control area
called the Lead-in and end at an area called
Lead-out. A Multi Session CD is a CD having
multiple sessions, with each segment from
Lead-in to Lead-out regarded as a single session.
CD-Extra: This format records audio (audio CD
data) on the tracks in session 1 and data on the
tracks in session 2.
Parental Control
A function of the DVD to limit playback of the
disc by the age of the users according to the
limitation level in each country/region. The
limitation varies from disc to disc; when it is
activated, playback is completely prohibited,
violent scenes are skipped or replaced with other
scenes and so on.
Playback Control (PBC)
Signals encoded on VIDEO CDs (Version 2.0)
to control playback. By using menu screens
recorded on VIDEO CDs with PBC functions,
you can enjoy playing simple interactive
programs, programs with search functions, and
so on.
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