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Definition of important terms - DVD
Angle
Recorded onto some DVD discs are scenes, which have
been simultaneously shot from a number of different
angles (the same scene is shot from the front, from
the left side, from the right side, etc.) . With such discs,
the ANGLE button can be used to view the scene from
different angles.
Chapter Number
These numbers are recorded on DVD discs. A title
is subdivided into many sections, each of which are
numbered, and specific parts of video presentations
can be searched quickly using these numbers.
DVD disc
This refers to a high-density optical disc on which
high-quality pictures and sound have been recorded
by means of digital signals. Incorporating a new video
compression technology (MPEG II) and high-density
recording technology. DVD discs enables aesthetically
pleasing full-motion video to be recorded over long
periods of time (for instance, a whole movie can be
recorded). DVD discs have a structure consisting of
two 0.6mm thin discs, which are adhered to each other.
Since the thinner the disc, the higher the density at
which the information can be recorded, a DVD disc has
a greater capacity than a single 1.2mm thick disc. Since
the two thin discs are adhered to each other, there is
the potential to achieve double-sided play sometime in
the future for even longer duration play.
Subtitles
These are lines of text appearing at the bottom of the
screen, which translate or transcribe the dialogue. They
are recorded on the DVD discs.
Time Number
This indicates the playtime, which has elapsed from the
start of a disc or a title. It can be used to find a specific
scene quickly. (Not all discs permit the time search
feature to be used. Availability is determined by the
disc's manufacturer.)
Title Number
These numbers are recorded on DVD discs. When a
disc contains two or more movies, these movies are
numbered as title 1, title 2, etc.
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Track Number
These numbers are assigned to the tracks, which are
recorded on Audio CDs. They enable specific tracks to
be located quickly.
Dolby Digital
Many movie theatres are equipped with 5.1 channel
surround systems. This same type of technology is
available to you in your home. To enjoy full 5.1-channel
surround, your DVD player must be connected to an
external Dolby Digital decoder via the digital outputs
(either coaxial or optical).
Dolby Pro Logic
This is Dolby Laboratories' technology to decode Dolby
Surround encoded programs actively. Dolby Surround
programs have four channels of audio (Left, Centre,
Right and Surround) encoded into a standard 2-channel
stereo signal. The rear channel is monaural.
LPCM
LPCM stands for Linear Pulse Code Modulation and
is digital audio.
MPEG
Short for Moving Picture Experts Group. This is an
international standard for compression of moving
images. On some DVDs digital audio has been
compressed and recorded in this format.
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