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Facilité d'utilisation
Glossary
Bitstream
Frame still and field still
This is the digital form of multiple channel
A still is shown when you pause a moving
audio data (e.g., 5.1 channel) before it is picture. A frame still is made up of 2 alter-
decoded into its various channels.
nating fields, so the picture may appear
blurred, but overall quality is high.
Decoder
A field still is not blurred, but it has only half
A decoder restores the coded audio signals
the information of a frame still so picture
on DVDs to normal. This is called decoding.
quality is lower.
Direct navigator
I/P/B
This is a list of programs you have recorded.
MPEG 2, the video compression standard
You can select programs from the list to
adopted for use with DVD-Video, codes
view. The list also shows the date and time
frames using these 3 picture types.
I: Intra coded picture (I-picture)
of recording, the channel, and the titles of
This is the standard picture and is a
titled programs. The selected program is
complete picture in itself. This means it
played in the background, making selection
has the best picture quality and is the
even simpler.
best to use when adjusting the picture.
Dolby Digital
P: Predictive coded picture (P-picture)
This picture is calculated based on past I
This is a method of coding digital signals de-
or P-pictures.
veloped by Dolby Laboratories. Apart from
B: Bidirectionally-predictive coded picture
stereo (2-channel) audio, these signals can
(B-picture)
also be 5.1-channel audio. A large amount
This picture is calculated by comparing
of audio information can be recorded on the
past and future I and P-pictures so it has
disc using this method.
the lowest volume of information.
Dolby Pro Logic
Linear PCM (pulse code modulation)
A surround system where a 4-channel audio
PCM is the usual digital method used for
track is recorded as 2 channels and then is
music CDs. DVDs have a greater volume so
restored to 4 channels for play. The sur-
they use linear PCM, which has a higher
round channel is monaural and can repro-
sampling rate. Compressed PCM signals
are called packed PCM (PPCM).
duce up to 7 kHz.
MP3
DTS (Digital Theater Systems)
A method of compressing audio, MPEG
This surround system is used in many
For Your Reference
Audio Layer 3 (MP3) allows audio to be
movie theaters around the world. There is
reduced to up to one tenth its original size
good separation between the channels, so
without overtly hurting audio quality.
realistic sound effects are possible.
When creating MP3 files to play on this unit
Dynamic range
≥Disc formats: ISO9660 level 1 and level 2
(except for extended formats)
Dynamic range is the difference between
≥Files: MP3 files with the suffix “.mp3” or
the lowest level of sound that can be heard
“.MP3”
above the noise of the equipment and the
≥To have this unit play files in a certain
highest level of sound before distortion
order, prefix folder and file names with
occurs.
numbers in the order you want to play
them. This may not work in all cases.
≥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 num-
ber of sessions to a minimum to avoid this.
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RQT6050
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