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Definition of Terms
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Digital audio output connector (Optical)
Dolby Surround encoded. On encoded material such
LPCM (Linear PCM audio)
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The digital audio output connector (optical) converts
as movie soundtracks, the sound is more like Dolby
In this format, the audio signal is converted to digital
electrical signals into optical signals and transfers
Digital 5.1 (see above), while on unencoded stereo
data and recorded in two channels without compres-
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them to the amplifier. Consequently, it has a number
material such as music CDs the effect is a wider, more
sion. Because the capacity of a DVD video disc is
of features including its immunity from electrical inter-
involving soundfield. Among other improvements over
large, it can store more data with better accuracy than
ference from external sources and its ability to prevent
Pro Logic, Pro Logic II provides two full-range sur-
a CD.
the generation of noise and its minimal effect on the
round channels, as opposed to Pro Logic’s single, lim-
external environment. This function is provided only
ited-bandwidth surround channel.
MPEG4
with CQ-VD7500U
MPEG4 (ASF) is an audio/video format for the online
Manufactured under license from Dolby
streaming proposed by Microsoft Corporation. This format
Dolby Digital
Laboratories. “Dolby”, “Pro Logic”, and the
allows you to treat audio/video data easily on your personal
This fully discrete format divides the music signals
double-D symbol are trademarks of Dolby
computer.
Generally, ASF files are so light that they can be stored on
into 5.1 channels: Front Left (L), Front Right (R),
Laboratories.
comparatively small-capacity media such as SD memory
Center (C), Left Surround (LS), Right Surround (RS)
card because they are made for online streaming.
and Subwoofer (SW: 0.1 channel) for recording and
dts
playback. The number of channels that are recorded
This format requires more data than Dolby Digital, and
Playback control (Video CD)
depends on the software (1 to 5.1 channels).
provides higher quality surround playback.
If the Video CD has “With Playback Control” or some-
Similar to Dolby Digital, this fully discrete format
thing similar written on the disc surface or on the
Dolby Digital 5.1
divides the music signals into 5.1 channels: Front Left
jacket, the scenes or information to be viewed (or lis-
Dolby Digital 5.1 is a method of transmitting and stor-
(L), Front Right (R), Center (C), Left Surround (LS),
tened to) can be selected interactively by using the
ing 5.1-channel soundtracks via newer digital media
Right Surround (RS) and Subwoofer (SW: 0.1 chan-
menu shown on the screen.
such as DVD, digital cable, digital broadcast TV (DTV),
nel) for recording and playback.
In these instructions, playback using the menu screen
and satellite transmissions. Unlike the Dolby Surround
is referred to as “menu play” for video CDs. This play-
encode/Pro Logic decode process, which sacrifices
“DTS” and “DTS Digital Surround” are registered
er supports Video CDs with playback control.
channel separation to get surround onto any stereo
trademarks of Digital Theater Systems, Inc.
soundtrack, Dolby Digital 5.1 is a discrete system that
“DTS” and “DTS 2.0” are trademarks of Digital
Title, Chapter (DVD)
keeps the multiple channels fully separated through-
Theater Systems, Inc.
DVDs are divided into large sections (titles) and/or
out the encoding and decoding processes. In addition
small sections (chapters). Each section is numbered;
to having full-range Left (L), Center (C), Right (R), Left
G.726
these numbers are called “Title number” or “Chapter
Surround (LR), and Right Surround (RS) channels,
G.726 is a sound data standard of compression/expansion
number”.
Dolby Digital 5.1 soundtracks carry a sixth (“.1”)
recommended by CCITT (Consultative Committee for
channel (Subwoofer) recorded with low-frequency
International Telephony and Telegraphy). Applying this
Title 1
Title 2
effects (those bass rumbles and booms you feel as
standard, the PCM (Pulse Code Modulation) sound data
can be compressed or expanded effectively.
Chapter 1
Chapter 2 ……
Chapter 1 ……
well as hear in a well-equipped cinema).
The applied software is mainly used for digital telephones,
digital voice recorders, digital camcorders and so on.
Track (Video CD/CD)
Manufactured under license from Dolby
Video CDs or CDs are divided into some sections
Laboratories. “Dolby” and the double-D symbol
Interactive DVD
(tracks). Each section is numbered; these numbers are
are trademarks of Dolby Laboratories.
An interactive DVD is DVD software which includes
called “Track number”.
multiple angles, multiple plot endings, etc.
Dolby Pro Logic
Track 1
Track 2
Track 3
……
Track
This format records signals from four channels [Front
Letterbox screen
Left (L), Front Right (R), Center (C), and Monaural
This refers to a screen on which the playback picture
Surround (S)] in two channels, decodes those chan-
of wide-screen DVDs or Video CDs appears with black
nels through a Dolby Pro Logic decoder, and then out-
This product incorporates copyright protection technology that is protected by U.S. patents and other intellectual
bands running along the top and bottom.
puts the resulting signals in four channels.
property rights. Use of this copyright protection technology must be authorized by Macrovision, and is intended for
home and other limited viewing uses only unless otherwise authorized by Macrovision. Reverse engineering or
Pan & Scan screen
disassembly is prohibited.
Dolby Pro Logic II
This refers to a screen on which the playback picture
Dolby Pro Logic II is an advanced matrix decoder that
of wide-screen DVDs or Video CDs is cut off at the left
derives five-channel surround (Left, Center, Right, Left
and right sides.
Surround, and Right Surround) from any stereo pro-
gram material, whether or not it has been specifically
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CQ-VD7700U/VD7500U
CQ-VD7700U/VD7500U
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