Glossary - Panasonic OmniVision PV-DF2035-K Operating Instructions Manual

Glossary

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 favourite 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 Theatre Systems)
This surround system is used in many movie theatres 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.
Playback Control
With Video CD (version 2.0), scenes or information may be selected
for viewing or listening from an interactive menu that appears on the
TV screen.
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 was 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 titles are numbered as
title 1, title 2, etc.
Track Number
Numbers assigned to tracks on Video CDs and CDs to allow
specific tracks to be quickly located.
Video CD
CD containing picture and sound with same quality level as video
tape. This unit also supports Video CDs with playback control
(version 2.0).
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.
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