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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.