Glossary
BD-LIVE
BD-Live is a recently developed Blu-ray feature that enables you to access content via your internet-connected Blu-ray player. BD-Live allows you to download a variety of up-to-date content (e.g., refreshed previews, ringtones, exclusive special features and events), and is an entirely new experience for interactive content.
BD-R
Blu-ray Disc Recordable. A BD R disc can be recorded once, and cannot be accidentally erased. BD R is the ideal format for archiving valuable data or storing and distributing video material.
BD-RE
Blu-ray Disc Rewritable. A BD RE disc can be recorded over and over again. It offers extensive editing functionality on the disc. BD RE is the ideal format for making sequential backups, or recording video for time shifting purposes.
BD-ROM
Blu-ray Disc Read Only Memory. A BD ROM disc contains pre-recorded data. 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 players.
CD
Compact Disc. First generation optical media, introduced in the early 1980s. A CD contains up to 700 MB of data. Is mainly used for audio and for data storage applications that do not require much room. Most Blu-ray Disc products will be compatible with CDs.
DVD
Digital Versatile Disc. Second generation optical media, introduced in the mid 1990s. A DVD contains up to 8.5 GB of data. Is mainly used for standard definition video and data storage applications that require average room. Most Blu-ray Disc products will be compatible with DVDs.
Gigabyte(GB)
A gigabyte equals about 1,000 megabytes (MB). A Blu-ray Disc capable of recording 50 GB therefore stores about 50,000 megabytes.
HDTV
High Definition Television. Generic term used for TV technology producing images in a much higher quality picture than standard definition TVs. An HDTV set displays 720 up to 1,080 visible lines. Blu-ray Discs usually contain HD video.
Layer
In Blu-ray Disc, data is recorded on a single side of the disc. However, a disc can store two data layers, both at the same side. The read-out or recording laser of the Blu-ray Disc device will first read from or record to one layer, and then re-focuses on the second layer. All this is done automatically without any user interference. A double layer Blu-ray Disc can store up to 50 GB of data.
SDTV
Standard Definition Television. Generic term used for conventional television sets, based on the NTSC or PAL standards. SD television consists of 480 to 570 visible lines.
