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Glossary
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Glossary
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.
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 it
is high).
AVCHD
AVCHD is a new format for high definition video camcorders which can record and play
high-resolution HD images.
BD-Live™
BD-Live™ is a Blu-ray™ Video (BD-ROM version 2 Profile 2.0/Profile 1.1) which contains new
functions (e.g. Internet connection), in addition to the BONUSVIEW™ function.
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 is. The large capacity makes it possible to benefit from the
features such as high-definition videos, multichannel surround sounds, interactive menus and so
on.
BONUSVIEW™
This is a Blu-ray Disc™-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
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.
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
®
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™
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.)
