Panasonic sc-ht500e Manuale Utente

38

RQT6835

A decoder restores the coded audio signals on DVDs to normal. This 
is called decoding.

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.

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.

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 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.

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.

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.

These are uncompressed digital signals, similar to those found on 
CDs. 

If a Video CD has playback control, you can select scenes and 
information with menus.

Set the unit up on an even surface away from direct sunlight, high 

temperatures, high humidity, and excessive vibration. These 
conditions can damage the cabinet and other components, thereby 
shortening the unit’s service life.

Do not place heavy items on the unit.

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.

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.

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 

flammable gases which can ignite if sprayed into the unit.

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. Electric 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.

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