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Appendix
Additional Information
Terms
AAC
AAC is short for Advanced Audio Coding and
refers to an audio compression technology
standard used with MPEG 2 and MPEG 4.
Aspect ratio
This is the width-to-height ratio of a TV screen.
A regular display has an aspect ratio of 4:3.
Wide screen displays have an aspect ratio of
16:9, providing a bigger picture for exceptional
presence and atmosphere.
Bit rate
This expresses data volume per second, or bps
(bits per second) units. The higher the rate,
the more information is available to reproduce
the sound. Using the same encoding method
(such as MP3), the higher the rate, the better
the sound.
Chapter
DVD titles are in turn divided into chapters
which are numbered in the same way as the
chapters of a book. With DVD video discs fea-
turing chapters, you can quickly find a desired
scene with chapter search.
DivX
DivX is a popular media technology created by
DivX, Inc. DivX media files contain highly com-
pressed video with high visual quality that
maintains a relatively small file size. DivX files
can also include advanced media features like
menus, subtitles, and alternate audio tracks.
Many DivX media files are available for down-
load online, and you can create your own
using your personal content and easy-to-use
tools from DivX.com.
DivX Certified
DivX Certified products are officially tested by
the creators of DivX and guaranteed to play all
versions of DivX video, including DivX 6.
EXIF (Exchangeable image file)
A file format developed by Fuji Photo Film for
digital still cameras. Digital cameras from var-
52
En
ious manufacturers use this compressed file
format which carries date, time and thumbnail
information, as well as the picture data.
ID3 tag
This is a method of embedding track-related
information in an MP3 file. This embedded in-
formation can include the track title, the ar-
tist's name, the album title, the music genre,
the year of production, comments and other
data. The contents can be freely edited using
software with ID3 Tag editing functions.
Although the tags are restricted as to the num-
ber of characters, the information can be
viewed when the track is played back.
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.
CRB2941-A/N
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