Dolby
TrueHD
(page
63)
Dolby TrueHD is a lossless coding
technology that supports up to 8 channels
of
multi-channel surround sound for the next
generation optical discs. The reproduced
sound is true to the original source bit-for-bit.
"continued
77
Glossary
AACS
"Advanced Access Content System" is a
specification for managing digital
entertainment contents stored on the next
generation
of
prerecorded and recorded
optical media. The specification enables
consumers to enjoy digital entertainment
content, including high-definition content.
AVCHD
(page
61)
The AVCHD format is a high definition
digital video camera format used to record
SD (standard definition)
or
HD (high
definition) signals
of
either the 1080i
specification*
I or the 720p specification*2 on
DVDs, using efficient data compression
coding technology. The MPEG-4
AVC/
H.264 format is adopted to compress video
data, and the Dolby Digital
or
Linear PCM is
used
to
compress audio data. The MPEG-4
AVC/H.264 format
is
capable
of
compressing images at higherefficiency than
that
of
the conventional image compression
format. The MPEG-4 AVC/H.264 format
enables a high definition (HD) video signal
shot
on
a digital video camera recorder to be
recorded on DVDs in the same way as for a
standard definition (SD) television signal.
*I A high definition specification that utilizes 1080
effective scanning lines and the interlace fonnat.
*2 A high definition specification that utilizes 720
effective scanning lines and the progressive
format.
BD-J
application
The
BD-ROM format supports Java for
interactive functions.
"BD-1" offers content providers almost
unlimited functionality when creating
interactive BD-ROM titles.
BD-R
(page
59)
BD-R (Biu-ray Disc Recordable) is a
recordable, write-once Biu-ray Disc,
available in the same capacities as the
BD
below. Since contents can be recorded and
cannot be overwritten, a BD-R can be used to
archive valuable data or storing and
distributing video material.
BD-RE
(page
59)
BD-RE (Biu-ray Disc Rewritable) is a
recordable and rewritable Biu-ray Disc,
available in the same capacities as the
BD
below.
The
re-recordable feature makes
extensive editing and time-shifting
applications possible.
BD-ROM
(page
59)
BD-ROMs (Biu-ray Disc Read-Only
Memory) are commercially produced discs
and are available in the same capacities as the
BD below. Other than conventional movie
and video contents, these discs have
enhanced features such as interactive content,
menu operations using pop-up menus,
selection
of
subtitle display, and slideshow.
Although a BD-ROM may contain any form
of
data, most BD-ROM discs will contain
movies in High Definition format, for
playback on Blu-ray DisclDVD players.
Blu-ray
Disc
(BD)
(page
59)
A disc format developed for recording/
playing high-definition (HD) video (for
HDTV, etc.), and for storing large amounts
of
data. A single layer Biu-ray Disc holds up to
25
GB, and a dual-layer Biu-ray Disc holds
up to
50
GB
of
data.
Deep
Color
(page
44)
These are video signals for which the color
depth
of
signals passing through an HDMI
jack
have been enhanced. With a Non-Deep
Color-compatible player, the number
of
colors 1 pixel can express is 24 bits
(16,777,216 colors). However, with a Deep
Color-compatible player, I pixel can express
more bits, such as 36 bits. With more bits, the
gradation
of
color depth can be expressed
more finely, and continuous color changes
will be displayed more smoothly.
Dolby
Digital
Plus
(page
63)
Developed as an extension to Dolby Digital,
the audio coding technology supports 7.1
multi-channel surround sound.
•
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