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16. GLOSSARY
AACS
Advanced Access Content System (AACS) is the
content protection scheme used with Blu-ray discs.
Analog Audio
An electrical signal that directly represents sound.
Compare this to digital audio which can be an
electrical signal, but is an indirect representation of
sound. See also ˝Digital Audio˝.
Aspect Ratio
The width of a TV screen relative to its height.
Conventional TVs are 4:3 (in other words, the TV
screen is almost square); widescreen models are 16:9
(the TV screen is almost twice as wide as its height).
AVCHD
AVCHD is a new format for high definition video
camcorders which can record and play high-
resolution HD images.
Blu-ray Disc™
Blu-ray Disc™ is a next generation optical video disc
which is capable of storing much more data than
a conventional DVD. The large capacity makes it
possible to benefit from the features such as high-
definition videos, multi-channel surround sounds,
interactive menus and so on.
Chapter
Just as a book is split up into several chapters, a Title
on a BD-video or DVD-video is usually divided into
chapters. See also ˝Title˝.
Cinavia™
Cinavia Notice
This product uses Cinavia technology to limit the
use of unauthorized copies of some commercially-
produced film and videos and their soundtracks.
When a prohibited use of an unauthorized copy is
detected, a message will be displayed and playback
or copying will be interrupted.
More information about Cinavia technology is
provided at the Cinavia Online Consumer Information
Center at
http://www.cinavia.com
To request additional information about Cinavia by
mail, send a postcard with your mailing address to:
Cinavia Consumer Information Center, P.O. Box 86851,
San Diego, CA, 92138, USA.
This product incorporates proprietary technology
under license from Verance Corporation and is
protected by U.S. Patent 7,369,677 and other U.S.
and worldwide patents issued and pending as well
as copyright and trade secret protection for certain
aspects of such technology.
Cinavia is a trademark of Verance Corporation.
Copyright 2004-2015 Verance Corporation. All
rights reserved by Verance. Reverse engineering or
disassembly is prohibited.
Digital Audio
An indirect representation of sound by numbers.
During recording, the sound is measured at discrete
intervals (44,100 times a second for CD audio) by an
analog-to-digital converter, generating a stream of
numbers. On playback, a digital-to-analog converter
generates an analog signal based on these numbers.
See also ˝Sampling Frequency˝ and ˝Analog Audio˝.
Dolby Digital
The system to compress digital sound developed by
Dolby Laboratories. It offers you sound of stereo (2ch)
or multi-channel audio.
Dolby Digital Plus
Dolby Digital Plus is the next generation digital audio
compression technology developed as an extension
to Dolby Digital. Blu-ray Disc™ supports 7.1 multi-
channel surround sound output.
Dolby TrueHD
Dolby TrueHD is a lossless coding technology
developed for next generation optical discs. Blu-ray
Disc™ supports 7.1 multi-channel surround sound
output.
DTS
®
(Digital Theater System)
DTS
®
is a multi channel surround sound system. You
can enjoy movie dynamic and realistic sound like
movie theater. DTS surround sound technologies were
developed by DTS, Inc.
DTS-HD
®
DTS-HD
®
is a lossless coding technology developed as
an extension of the original DTS Coherent Acoustics
format. Blu-ray Disc™ supports 7.1 multi-channel
surround sound output.
HDMI (High-Definition Multimedia Interface)
A digital interface between an audio and video
Source. It can transmit component video, audio, and
control signal with one cable connection.
JPEG (Joint Photographic Experts Group)
JPEG is a method of compressing still picture files. You
can copy JPEG files on BD-RE/-R, DVD-RW/-R, CD-
RW/-R, or USB Memory Stick from a computer and
play back the files on this unit.
Local Storage
A storage area of sub contents for playing virtual
packages on BD-video.
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