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9   Glossary
Aspect ratio
Aspect ratio refers to the length to height 
ratio of TV screens. The ratio of a standard 
TV is 4:3, while the ratio of a high-
definition or wide TV is 16:9. The letter 
box allows you to enjoy a picture with a 
wider perspective on a standard 4:3 
screen.
Blu-ray Disc (BD)
Blu-ray Disc is a next generation optical 
video disc capable of storing five times 
more data than a conventional DVD. The 
large capacity makes it possible to benefit 
from the features such as high-definition 
videos, multichannel surround sound, 
interactive menus and so on.
BONUSVIEW
TM
 
This is a BD-Video (Final Standard Profile 
or Profile 1.1) that supports interactive 
content encoded on the disc, such as 
picture-in-picture. This means you can play 
the primary video and secondary video 
simultaneously.
Digital Audio
Digital Audio is a sound signal that has 
been converted into numerical values. 
Digital sound can be transmitted through 
multiple channels. Analogue sound can 
only be transmitted through two channels.
Dolby
®
 Digital  
The system to compress digital sound 
developed by Dolby Laboratories. It offers 
you sound of stereo (2ch) or multichannel
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
®
  
DTS is a multi-channel surround sound 
system. By connecting to DTS decoder, 
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.
DTS-HD Master Audio
TM
A disc encoded with DTS-HD Master Audio 
delivers ALL of the information from the 
original master recording — bit-for-bit, it's 
identical to what the sound engineers laid 
down. Audio doesn't get any better than 
this.
HDCP
High-bandwidth Digital Content Protection. 
This is a specification that provides a 
secure transmission of digital contents 
between different devices (to prevent 
unauthorized copyright.)
HDMI
®
High-Definition Multimedia Interface 
(HDMI) is a high-speed digital interface 
that can transmit uncompressed high 
definition video and digital multichannel 
audio. It delivers high quality picture and 
sound quality. HDMI is fully backward-
compatible with DVI. As required by the 
HDMI standard, connecting to HDMI or 
DVI products without HDCP (High-
bandwidth Digital Content Protection) will 
result in no Video or Audio output.
JPEG 
A very common digital still picture format. 
A still-picture data compression system 
proposed by the Joint Photographic Expert 
Group, which features small decrease in 
image quality in spite of its high