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Appendix NAVI/AV
ISO9660 format
This is the international standard for the format logic of
DVD/CD-ROM folders and files. For the ISO9660 format,
there are regulations for the following two levels.
Level 1:
The file name is in 8.3 format (the name consists of up to
8 characters, half-byte English capital letters, half-byte
numerals and the “_” sign, with a file-extension of three
characters.)
Level 2:
The file name can have up to 31 characters (including
the separation mark “.” and a file extension). Each folder
contains less than 8 hierarchies.
Extended formats
Joliet:
File names can have up to 64 characters.
Romeo:
File names can have up to 128 characters.
JPEG
This stands for Joint Photographic Experts Group, and is
an international still image compression standard.
Linear PCM (LPCM)/Pulse code modulation
This stands for linear pulse code modulation, which is
the signal recording system used for music CDs and
DVDs. Generally, DVDs are recorded with higher sam-
pling frequency and bit rate than CDs. Therefore, DVDs
can provide higher sound quality.
m3u
Playlists created using the “WINAMP” software
have a playlist file extension (.m3u).
MP3
MP3 is short for MPEG Audio Layer 3. It is an audio com-
pression standard set by a working group (MPEG) of the
ISO (International Standards Organization). MP3 is able
to compress audio data to about 1/10th the size of a con-
ventional disc.
MPEG
This stands for Moving Pictures Experts Group, and is an
international video image compression standard. Some
DVDs feature digital audio compressed and recorded
using this system.
Multi-angle
With regular TV programs, although multiple cameras
are used to simultaneously shoot scenes, only images
from one camera at a time are transmitted to your TV.
Some DVDs feature scenes shot from multiple angles,
letting you choose your viewing angle as desired.
Multi-audio (Multilingual dialog)
Some DVDs feature dialog recorded in multiple lan-
guages. Dialog in up to 8 languages can be recorded on
a single disc, letting you choose as desired.
Multi-session
Multi-session is a recording method that allows addi-
tional data to be recorded later. When recording data on
a CD-ROM, etc., all data from beginning to end is treated
as a single unit or session. Multi-session is a method of
recording more than 2 sessions on one disc.
Multi-subtitle
Subtitles in up to 32 languages can be recorded on a sin-
gle DVD, letting you choose as desired.
Optical digital output
By transmitting audio signals in a digital signal format,
the chance of sonic quality deteriorating in the course of
transmission is minimized. An optical digital output is
designed to transmit digital signals optically.
Packet write
This is a general term for a method of writing on CD-R,
etc. at the time required for a file, just as is done with
files on floppy or hard discs.
Parental lock
Some DVD-Video discs with violent or adult-oriented
scenes feature parental lock which prevents children
from viewing such scenes. With this kind of disc, if you
set the unit’s parental lock level, playback of scenes
inappropriate for children will be disabled, or these
scenes will be skipped.
Point of Interest (POI)
Point Of Interest; any of a range of locations stored in
the data, such as railway stations, shops, restaurants,
and amusement parks.
Region number
DVD players and DVD discs feature region numbers indi-
cating the area in which they were purchased. Playback
of a DVD is not possible unless it features the same
region number as the DVD player.
Route setting
The process of determining the ideal route to a specific
location; route setting is done automatically by the sys-
tem when you specify a destination.
Set route
The route marked out by the system to your destination.
It is highlighted on the map.
Title
DVD-Video discs have a high data capacity, enabling
recording of multiple movies on a single disc. If, for
example, one disc contains three separate movies, they
are divided into title 1, title 2 and title 3. This lets you
enjoy the convenience of title search and other func-
tions.