Hp CD52 External CD-Writer Series Manual do Utilizador descarregar pdf (Página 114)

Nero Express Glossary • 114

Sector

A sector is the smallest addressable information unit of a CD. It is composed of

2352 bytes of which - depending on the type of CD used - differing amounts are

available as user data. A sector generally consists of a header, synchronization

bits and user data. It may also have error recognition and correction data. To read

a sector, a drive with simple reading speed requires 1/75th of a second.

Session

When data is written onto a disc, this is called a session. A session is marked at

the start and at the end. You can write onto a disc and complete it in a single

session. If more than one session is recorded on a disc, then this is known as a

multi-session disc.

Session-At-Once

The session-at-once method is mainly used for CD-Extra. With the session-at-once

recording type, a first session with several audio tracks is recorded in one

operation. The latter is then switched off but the CD is not closed (meaning you are

still able to write additional data to it). A second (data) session is then written and

then the disc is closed.

Simulated Recording

Simulation of the burn process in order to test whether there is a constant writing

flow. The procedure is the same as the writing of the disc, with the only difference

being that the laser writer is switched off.

Single Session

When the data/audio is written or recorded to the blank disc one time only.

Super Video CD (SVCD)

Super Video CD or (SVCD) is very similar to a video CD however this format uses

a compression standard called MPEG to store the audio and data. When creating

Super Video CD’s, the source data must be MPEG-2 coded and the parameters

must be suitable for Super Video CD’s. An encoder must be used to create Super

Video CD’s, which must have the required options. As the encoder supplier

whether it supports coding for Super Video CD’s or visit the Ahead website at

www.nero.com

for additional information on purchasing the encoder. SVCD discs

can be played on DVD players, PC’s with DVD-ROM’s or a CD-ROM drive with

software which allows this type of video format to be seen.

Table of Contents (T.O.C.)

This designates the contents of every session and is stored in the Lead-In.

Thermal Recalibration

As your hard drive platters rotate, they expand due to the heat that is generated.

The hard drive will stop for a split second to readjust the heads (which does the

reading of data) to the newly expanded platter(s).

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