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RQT6387
Reference
Bitstream
This is the digital form of multiple channel audio data (e.g., 5.1 chan-
nel) before it is decoded into its various channels.
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 Labo-
ratories. Apart from stereo (2-channel) audio, these signals can also
be 5.1-channel audio. A large amount of audio information can be
recorded on one disc using this method.
Dolby Pro Logic
A surround system where a 4-channel audio track is recorded as
2 channels and then is restored to 4 channels for play. The surround
channel is monaural and can reproduce up to 7 kHz.
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.
Frame still and field still
Frames are the still pictures that go together to make a moving pic-
ture. 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.
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 (I-picture)
This is the standard picture and is a complete picture in itself.
This means it has the best picture quality and is the best to use
when adjusting the picture.
P: Predictive coded picture (P-picture)
This picture is calculated based on past I or P-pictures.
B: Bidirectionally-predictive coded picture (B-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.
MP3
A method of compressing audio, MPEG Audio Layer 3 (MP3) allows
audio to be reduced to up to one tenth its original size without overtly
hurting audio quality.
When creating MP3 files to play on this unit
≥Disc formats: ISO9660 level 1 and level 2 (except for extended for-
mats)
≥Files: MP3 files with the suffix “.mp3” or “.MP3”
≥To have this unit play files in a certain order, prefix folder and file
names with numbers in the order you want to play them. This may
not work in all cases.
Not compatible with multi-session recordings
If you record MP3 onto CD-R/CD-RW over a number of sessions,
this unit can play only the recordings made in the first session.
Playback control (PBC)
If a Video CD has playback control, you can select scenes and infor-
mation with menus.
GlossarySafety precautions
Placement
Set the unit up on an even surface away from direct sunlight, high
temperatures, high humidity, and excessive vibration. These condi-
tions can damage the cabinet and other components, thereby
shortening the unit’s service life.
Do not place heavy items on the unit.
Voltage
Do not use high voltage power sources. This can overload the unit
and cause a fire.
Do not use a DC power source. Check the source carefully when
setting the unit up on a ship or other place where DC is used.
AC mains lead protection
Ensure the AC mains lead is connected correctly and not damaged.
Poor connection and lead damage can cause fire or electric shock.
Do not pull, bend, or place heavy items on the lead.
Grasp the plug firmly when unplugging the lead. Pulling the AC
mains lead can cause electric shock.
Do not handle the plug with wet hands. This can cause electric
shock.
Foreign matter
Do not let metal objects fall inside the unit. This can cause electric
shock or malfunction.
Do not let liquids get into the unit. This can cause electric shock or
malfunction. If this occurs, immediately disconnect the unit from the
power supply and contact your dealer.
Do not spray insecticides onto or into the unit. They contain flam-
mable gases which can ignite if sprayed into the unit.
Service
Do not attempt to repair this unit by yourself. If sound is interrupted,
indicators fail to light, smoke appears, or any other problem that is
not covered in these instructions occurs, disconnect the AC mains
lead and contact your dealer or an authorized service center. Elec-
tric shock or damage to the unit can occur if the unit is repaired,
disassembled or reconstructed by unqualified persons.
Extend operating life by disconnecting the unit from the power
source if it is not to be used for a long time.