Glossary - Nero 9 Manual

Glossary

18 Glossary
AIFF
The Audio Interchange File Format is an uncompressed audio file format from Apple® and
represents a sort of counterpart to the WAV format from Microsoft. Files are larger than
when using a compressed format, but the quality is higher. AIFF compressed is the com-
pressed variation.
Archive Bit
Archive bits are used to identify files that have been edited. A file is only resaved during the
next backup process if it was edited (and an archive bit is thus reset).
Blu-ray
Blu-ray technology refers to burning on special data carriers. In comparison to DVD's, which
use a red laser in order to read and write data, Blu-ray discs are written with a blue laser.
The shorter wavelength (405 nm) of this blue laser makes it possible to position the laser
with greater accuracy. Data can be written in a more compact manner and takes up less
space on the disc. A Blu-ray disc can store up to 25 GB on a single layer disc and up to 50
GB on a dual layer disc.
Book Type
The book type defines the specification (e.g. DVD-, DVD+, DVD-ROM) of a DVD. In order to
ensure correct playback, the DVD specifications are defined in books so that all media can
be read correctly. The specifications are defined in the so-called Rainbow Books, which are
distinguished by means of their color (e.g. Yellow Book).
Bootable CD
Booting refers to loading the operating system when a computer is started. This is normally
done from the hard drive. However, if you do not want to boot or cannot boot your computer
from your hard drive for whatever reason, you can load an operating environment from the
drive with a boot CD.
Buffer
A buffer refers to temporary memory that records and delivers data that cannot be processed
immediately as required. The buffer also allows for continuous data flow.
Buffer Underrun
A buffer underrun is an interruption in the data flow in the internal memory (e.g. of the re-
corder). A buffer underrun results from an interruption in the data flow to the internal buffer.
The buffer continues to deliver data until it is finally empty. When recording, data is fed con-
tinuously to the recorder's buffer in order to keep a steady flow of data. If the steady flow of
data is interrupted, the media becomes unusable. Most modern recorders have a protective
mechanism against buffer underruns.
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Nero Burning ROM