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DVD Video

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 Video
enables esthetically pleasing full-motion video to be recorded
over long periods of time (for instance, a whole movie can be
recorded).
DVD Video has a structure consisting of two 0.6 mm 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 Video has a greater capacity than a single 1.2 mm 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.

MPEG (DVD Video)

MPEG stands for Moving Picture Expert Group. It is regarded
as an international standard for digital signal compression and
restoration for media.

Track number (CD)

Track numbers are used to designate the various sections of a
disc.

Title, Title number (DVD Video)

The title is the largest unit of the video/audio recording in DVD
Videos. Usually, the title corresponds to a movie of video
software or an album (or a piece) of music software. Title
numbers are sequential numbers assigned to titles.

Chapter, Chapter number (DVD Video)

Chapters are divisions, which are smaller than the titles, of the
contents recorded on DVD Videos. Every title is composed of
more than one chapter. Chapter numbers are the sequential
numbers assigned to the chapters in a DVD Video.

Aspect ratio (DVD Video)

The aspect ratio is the ratio between the vertical and horizontal
size of the picture displayed on a TV screen. The aspect ratio
of normal TV screen is 4:3 while that of the wide-screen TV and
HDTV screens is 16:9.

Subtitle (DVD Video)

Some DVD Videos contain the recording of more than one
subtitle languages. With these discs, this unit can select one of
the subtitle languages as desired during playback.

Dolby Digital

This is the latest digital surround system developed by Dolby
Laboratories. Discs bearing the includes the
recording of up to 5.1 channels of digital signals, which can
reproduce much better sound quality, spatial expansion and
dynamic range characteristics than the previous Dolby
Surround effect.

Dolby Pro Logic

This is a specially encoded 2 channel surround format
designed to provide theater-like surround sound from Dolby
Pro Logic program sources bearing the .

Dolby Virtual

This employs sophiticated digital processing to create the
illusion of five phantom speakers. Therefore, this allows you
to experience a realistic multi-channel experience from the
Dolby Digital, Dolby Pro Logic or 2 channel stereo digital audio
(recorded in linear PCM) program source, through just a single
pair of front speakers.
Manufactured under licence from Dolby Laboratories. Dolby ,
Pro Logic , and the double-D symbol are trandemarks of
Dolby Laboratories. Confidential Unpublished Works. 1992-
1997 Dolby Laboratories. All rights reserved.

DTS (Digital Theater Systems)

DTS is a newly-developed surround system which can handle
more amount of data than Dolby Digital, providing better audio
quality. Though the number of audio channels is 5.1 which is
same as Dolby Digital, discs bearing the provides fat
sound and better signal-to-noise ratio, thanks to the lower
audio compression ratio format. It also provides wide dynamic
range and better separation, resulting in magnificent sound.
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Manufactured under license from Digital Theather Systems,
Inc. US Pat. No. 5,451,942 and other world-wide patents
issues and pending. DTS and DTS Digital Surround
are trademarks of Digital Theater Systems, Inc. 1996
Digital Theater Systems, Inc. All rights reserved.

MPEG Multichannel

This is a newly-developed surround system which faithfully
reproduces the ambience and dynamics of movie soundtracks
and music alike. Though the number of audio channels is 5.1
which is same as Dolby Digital, discs bearing the
is much better at locating individual sounds
to the correct and stable position in the sound stage.

Circle Surround

This provides listeners with 5.1 discrete channels of surround
sound from stereo recorded music or surround encoded
movies.
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Circle Surround and the symbol are trademarks of
SRS Labs, Inc. in the United States and selected foreign
countries. Circle Surround technology is incorporated under
license from SRS Labs, Inc.
Definition Of Terms
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