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RQT7125
4
Glossary
Decoder
A decoder restores the coded audio signals on DVDs to normal. This
is called decoding.
Dolby Digital
This is a method of coding digital signals developed by Dolby
Laboratories. Apart from stereo (2-channel) audio, these signals can
also be multi-channel audio. A large amount of audio information can
be recorded on one disc using this method.
DTS (Digital Theater Systems)
This surround system is used in many movie theaters around the
world. There is good separation between the channels, so realistic
sound effects are possible.
Dynamic range
Dynamic range is the difference between the lowest level of sound
that can be heard above the noise of the equipment and the highest
level of sound before distortion occurs.
Film and video
DVD-Videos are recorded using either film or video. Usually, film is
recorded at 24 frames per second, the rate movies are filmed at, while
video is recorded at 30 frames per second.
Frame still and field still
Frames are the still pictures that go together to make a moving
picture. There are about 30 frames shown each second.
One frame is made up of two fields. A regular television shows these
fields one after the other to create frames.
A still is shown when you pause a moving picture. A frame still is
made up of two alternating fields, so the picture may appear blurred,
but overall quality is high.
A field still is not blurred, but it has only half the information of a frame
still so picture quality is lower.
Interlace
NTSC, the video signal standard, has 480 interlaced (I) scan lines.
The video signals output from this unit’s COMPONENT VIDEO OUT
terminals (Y, P
B
, P
R
) allow you to enjoy higher quality pictures than if
the signals were output from the VIDEO OUT terminal or S VIDEO
OUT terminal.
I/P/B
MPEG 2, the video compression standard adopted for use with DVD-
Video, codes frames using these 3 picture types.
I: Intra coded picture
This picture has the best quality and is the best to use when
adjusting the picture.
P: Predictive coded picture
This picture is calculated based on past I or P-pictures.
B: Bidirectionally-predictive coded picture
This picture is calculated by comparing past and future I and P-
pictures so it has the lowest volume of information.
Linear PCM (pulse code modulation)
These are uncompressed digital signals, similar to those found on
CDs.
Playback control (PBC)
If a Video CD has playback control, you can select scenes and
information with menus.
WMA, MP3, CD text and JPEG information
¡ Discs must conform to ISO9660 level 1 or 2 (except for extended
formats).
¡ This unit is compatible with multi-session but if there are a lot of
sessions it takes more time for play to start. Keep the number of
sessions to a minimum to avoid this.
¡ The order tracks appear in the menus may differ to the order shown
on your computer.
WMA
¡ Noise may occur when playing WMA files.
¡ You cannot play WMA files that are copy protected.
MP3
¡ This unit is not compatible with ID3 tags.
¡ If you play an MP3 track that includes still picture data, it will take
some time before the music itself starts playing and the elapsed
time will not be displayed during this time. Even after the track
starts, the correct play time will not be displayed.
JPEG
¡ To view JPEG files on this unit:
— Take them on a digital camera that meets the DCF (Design rule for
Camera File System) standard. Some digital cameras have functions
that are not supported by the DCF standard like automatic picture
rotation which may render a picture unviewable.
— Do not alter the files in any way or save them under a different
name.
¡ This unit cannot display moving pictures, Motion JPEG and other
such formats, still pictures other than JPEG (i.e. TIFF) or play
associated sound.
Windows Media, and the Windows logo are
trademarks, or registered trademarks of
Microsoft Corporation in the United States
and/or other countries.
WMA is a compression format developed
by Microsoft Corporation. It achieves the
same sound quality as MP3 with a file size
that is smaller than that of MP3.
MPEG Layer-3 audio decoding technology licensed from
Fraunhofer IIS and Thomson multimedia.
001
root
004track.wma
001group
004track.wma
005track.wma
006track.wma
002group
003group
007track.mp3
008track.mp3
009track.mp3
010track.mp3
011track.mp3
012track.mp3
013track.mp3
The extension for MP3 is “.mp3”
or “.MP3”.
The extension for JPEG is “.JPG”,
“.jpg”, “.JPEG” or “.jpeg”.
Order of play
Naming folders and files
Prefix folder and file names with
3-digit numbers in the order you
want to play them.
(CD text only)
When making your own CD text discs
The unit plays the tracks in the order you record them so you do
not have to prefix the titles with numbers.
Extension
(or .WMA)
WMA MP3 JPEG
CD
RQT7125(02-04)-2 5/14/03, 5:18 PM4