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78
Chapters
Also known as 'scenes', a DVD movie can be broken up into sections
much like the chapters of a book, that can be accessed quickly and
easily via the DVD menu or remote control.
NICAM
NICAM is a digital sound transmission system. Using NICAM, you can
transmit either 1 stereo channel or 2 separate mono channels.
However, if reception is poor and the sound distorted you can turn off
NICAM.
NTSC
National Television Systems Committee. The color TV broadcast
system used in the US, Canada and Japan. An NTSC picture is made up
of 525 horizontal lines and has inferior picture quality in comparison to
the PAL system. All Australian-sold DVD players are NTSC compatible,
however DVD's that are played on a television that is not compatible
will appear in black and white.
Region code
Since DVD films are not normally released in all parts of the world at
the same time, all DVD players have a specific regional code. Discs can
be given a regional code. If the regional codes differ between the player
and the disc, playback is not possible.
The regional code of the DVD recorder is shown on the type plate at
the back or bottom.
Pan & Scan
One method of converting a widescreen movie to fit in a standard 4:3
television is known as letterboxing (described above) and the other
commonly found process is Pan and Scan (also known as Panning and
Scanning). To retain a fullscreen 4x3 image, the most important part of
each scene is chosen and the left and right edges of the scene are
cropped. Obviously, this process results in a loss of some data and
does not fully represent the film as it was intended to be portrayed by
the director. As such, DVD enthusiasts are not overly fond of DVD's
authored via this method.
Macrovision
Macrovision is a copy-protection technique intended to keep you from
making copies of DVDs with your VCR. It works by continuously
adjusting the video signal level that results in a recording where the
brightness of the picture continuously fluctuates between light and
dark, and the color levels fluctuate between oversaturated and washed
out. Macrovision "encoded" DVDs contain a bit of data that tells the
DVD player to activate its internal macrovision circuitry in order to
prevent copying.
Regional Coding
A security system introduced to DVD at the request of Hollywood's
major studios to ensure that DVD's released and sold in one region
will not play on DVD machines in other regions. Movie distributors
therefore maintain control over release dates of their films, as well as
enabling discs to be produced that conform to different censorship
laws, language and subtitle requirements. When a DVD disc is
manufactured, a region code is applied at the authoring stage such that
the final disc will play only on those players distributed in the
designated world region.
ENGLISH
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