Panasonic PV-27DF4 User Manual

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Angle
Some DVD discs feature scenes simultaneously shot 
from different angles. The ANGLE button can be used to 
view the scene from different angles. (ANGLE Indicator 
lights up on the unit when a scene recorded from 
different angles is detected.)
Bitstream
This is the digital form of multi-channel audio data (e.g., 
5.1 channel) before it is decoded into its various 
channels.
Chapter Number
Titles are subdivided into numbered sections. You can 
quickly search for a favorite scene using these numbers.
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 multichannel 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.
DVD
A high-density optical disc on which high-quality pictures 
and sound have been digitally recorded. DVD 
incorporates new video compression technology (MPEG 
II) and high-density recording technology which allow 
entire movies to be recorded with incredible playback 
quality.
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.
Linear PCM (pulse code modulation)
These are uncompressed digital signals, similar to those 
found on CDs.
Regional Code
This is a copyright protection measure unique to 
DVD-Video. There are 6 regional codes worldwide. In 
order to play a disc encoded with a regional code, the 
DVD player must be equipped with the same code.
Sampling bit number
This is the resolution shown in number of bits to 
determine how faithfully the sampled analog frequency 
was expressed at the time the signal is converted from 
analog to digital.
Sampling Frequency
This is the number of times sampling is performed in (1) 
second shown in Hz units at the time the signal is 
converted from analog to digital using the PCM method. 
The greater the number, the higher the sound quality.
Subtitles
Written dialogue which appears at the bottom of the 
screen.
Time Number
The elapsed play time from the start of a disc or title. Use 
to quickly find scenes. (May not work with some discs.)
Title Number
For DVD discs with two or more titles, the title is 
numbered as title 1, title 2, etc.
Track Number
Numbers assigned to tracks on CDs to allow specific 
tracks to be quickly located.
V.S.S. Feature
Virtual surround sound playback is possible even with 
only 2 speakers. For example, using this unit’s built-in 
speakers, the 2 speakers of a connected stereo, etc., you 
can enjoy a surround sound effect. If the disc was 
recorded in Dolby Digital 5.1 ch, with just the two front 
L/R speakers, you will feel as if you are hearing sound 
from nonexistent speakers on both sides of you. This 
effect also works with Dolby Digital 2-channel discs.
Glossary