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ISO9660 format
This is the international standard for the for-
mat logic of 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 con-
sists of up to 8 characters, half-byte English
capital letters and half-byte numerals and the
“_” sign, with a file-extension of three charac-
ters).
Level 2:
The file name can have up to 31 characters (in-
cluding the separation mark “.” and a file ex-
tension). 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 com-
pression 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 re-
corded with higher sampling frequency and
bit rate than CDs. Therefore, DVDs can provide
higher sound quality.
m3u
Playlists created using the “WINAMP” soft-
ware have a playlist file extension (.m3u).
MP3
MP3 is short for MPEG Audio Layer 3. It is an
audio compression standard set by a working
group (MPEG) of the ISO (International Stan-
dards Organization). MP3 is able to compress
audio data to about 1/10th the level of a con-
ventional disc.
MPEG
This stands for Moving Pictures Experts
Group, and is an international video image
compression standard. Some DVDs feature di-
gital audio compressed and recorded using
this system.
MS ADPCM
This stands for Microsoft adaptive differential
pulse code modulation, which is the signal re-
cording system used for the multimedia soft-
ware of Microsoft Corporation.
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, let-
ting you choose your viewing angle as desired.
Multi-audio (Multilingual dialog)
Some DVDs feature dialog recorded in multi-
ple languages. 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 al-
lows additional data to be recorded later.
When recording data on a CD-ROM, CD-R or
CD-RW, etc., all data from beginning to end is
treated as a single unit or session. Multi-ses-
sion is a method of recording more than 2 ses-
sions on one disc.
Multi-subtitle
Subtitles in up to 32 languages can be re-
corded on a single DVD, letting you choose as
desired.
Number of quantization bits
The number of quantization bits is one factor
in the overall sound quality; the higher the
“bit-depth”, the better the sound quality. How-
ever, increasing the bit-depth also increases
the amount of data and therefore storage
space required.
Additional Information
En
112
Appendix