compression ratio Lexus ES350 2012 Navigation Manual

AUDIO/VIDEO SYSTEM
242
DVD VIDEO DISC GLOSSARY
DVD video discs:Digital Versatile Disc
that holds video. DVD video discs have
adopted “MPEG2”, one of the world stan-
dards of digital compression technologies.
The picture data is compressed by 1/40 on
average and stored. Variable rate en-
coded technology in which the volume of
data assigned to the picture is changed de-
pending on the picture format has also
been adopted. Audio data is stored using
PCM and Dolby Digital, which enables
higher quality of sound. Furthermore, mul-
ti− angle and multi −language features will
also help you enjoy the more advanced
technology of DVD video.
Viewer restrictions: This feature limits
what can be viewed in conformity with a
level of restrictions of the country. The lev-
el of restrictions varies depending on the
DVD video disc. Some DVD video discs
cannot be played at all, or violent scenes
are skipped or replaced with other scenes.
Level 1: DVD video discs for children can
be played.
Level 2 −7: DVD video discs for children
and G− rated movie can be played.
Level 8: All types of the DVD video discs
can be played.
Multi− angle feature: You can enjoy the
same scene at different angles.
Multi− language feature: You can select a
language of the subtitle and audio.
Region codes: The region codes are pro-
vided on DVD players and DVD discs. If
the DVD video disc does not have the
same region code as the DVD player, you
cannot play the disc on the DVD player.
For region codes, see page 241. Audio:
This DVD player can play liner
PCM, Dolby Digital and MPEG audio for-
mat DVD. Other decoded type cannot be
played.
Title and chapter: Video and audio pro-
grams stored in DVD video disc are divid-
ed in parts by title and chapter.
Title: The largest unit of the video and au-
dio programs stored on DVD video discs.
Usually, one piece of movie, one album, or
one audio program is assigned as a title.
Chapter: The unit smaller than that of title.
A title comprises plural chapters.
Manufactured under license from
Dolby Laboratories. “Dolby”, “Pro Log-
ic”, and the double −D symbol are trade-
marks of Dolby Laboratories.
This product incorporates copyright
protection technology that is protected
by method claims of certain U.S. pat-
ents and other intellectual property
rights owned by Macrovision Corpora-
tion and other rights owners. Use of
this copyright protection technology
must be authorized by Macrovision
Corporation, and is intended for home
and other limited viewing uses only un-
less otherwise authorized by Macrovi-
sion Corporation. Reverse engineering
or disassembly is prohibited.
“DTS” and “DTS Digital Surround” are
registered trademarks of Digital The-
ater Systems, Inc.
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AUDIO/VIDEO SYSTEM
268
TERMS
Packet write—
This is a general term that describes the
process of writing data on−demand to
CD− R, etc., in the same way that data is
written to floppy or hard discs.
ID3 Tag—
This is a method of embedding track −re-
lated information in an MP3 file. This em-
bedded information can include the track
title, the artist’s name, the album title, the
music genre, the year of production, com-
ments and other data. The contents can
be freely edited using software with ID3 tag
editing functions. Although the tags are re-
stricted to the number of characters, the in-
formation can be viewed when the track is
played back.
WMA Tag—
WMA files can contain a WMA tag that is
used in the same way as an ID3 tag. WMA
tags carry information such as track title,
artist name.
ISO 9660 format—
This is the international standard for the
formatting of CD −ROM folders and files.
For the ISO 9660 format, there are two lev-
els of regulations.
Level 1:
The file name is in 8.3 format (8 character
file names, with a 3 character file exten-
sion. File names must be composed of
one− byte capital letters and numbers. The
“_” symbol may also be included.)
Level 2:
The file name can have up to 31 characters
(including the separation mark “.” and file
extension). Each folder must contain few-
er than 8 hierarchies. m3u—
Playlists created using “WINAMP” soft-
ware have a playlist file extension (.m3u).
MP3—
MP3 is an audio compression standard de-
termined by a working group (MPEG) of
the ISO (International Standard Organiza-
tion). MP3 compresses audio data to
about 1/10 the size of that on conventional
discs.
WMA—
WMA (Windows Media Audio) is an audio
compression format developed by
Microsoft
r. It compresses files into a size
smaller than that of MP3 files. The
decoding formats for WMA files are Ver. 7,
8, and 9.
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