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*1 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 higher efficiency 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.
*1 A high definition specification that utilizes 1080 effective scanning lines and the interlace format.
*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-J” offers content providers almost unlimited functionality when creating interactive BD-ROM titles.
BD-R (page 59)
BD-R (Blu-ray Disc Recordable) is a recordable, write-once Blu-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 (Blu-ray Disc Rewritable) is a recordable and rewritable Blu-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 (Blu-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 Disc/DVD 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 Blu-ray Disc holds up to
25GB, and a dual-layer Blu-ray Disc holds up to 50 GB of data.
Dolby Digital Plus (page 63)
Developed as an extension to Dolby Digital, the audio coding technology supports 7.1 multi-channel surround sound.
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.
DTS-HD High Resolution Audio (page 63)
Developed as an extension to DTS Digital Surround format. It supports a maximum sampling frequency of 96 kHz, and 7.1 multi- channel surround.
DTS-HD High Resolution Audio has a maximum transmission rate of 6 Mbps, with lossy compression (Lossy).
