User Guide

Glossary
G - 50
Glossary
tions and manufacturers and
various professional groups from
the entire motion picture and tele-
vision industry. The SMPTE main-
tains a series of committees dealing
with standards and standardiza-
tion proposals.
SMPTE/EBU Time-
code
This is the currently normal and
widely used
àTIMECODE
S
TANDARD (àVITC and àLT C )
which was introduced by the
àSMPTE.
Time data in the format of
hour:minute:second:image are
assigned to each video picture. In
the PAL system, the last digit con-
tains values from 00 to 24; the
other digits may adopt values from
00 to 59. A valid timecode value
would be 01:24:56:22.
S/N
àSIGNAL-TO-NOISE-RATIO
Storage Require-
ments
The computer-based processing of
video pictures requires a far greater
quantity of storage space than con-
ventional PC applications.
For example, a video image digi-
tized with a resolution of 8 bits in
accordance with
àITU-R 601,
takes up 810 KB. With 25 pictures
per seconds this amounts to 21 MB
per second of video. (All details
relate to 625 lines and 50 Hz).
When working with pictures in
HDTV quality, this value is
approximately 6 times higher. For
digital pictures with motion pic-
ture resolution which are to be Pro-
jected in the cinema, the required
data volume is even higher again.
Square Pixel
àPIXEL
SSA
SSA stands for Serial Storage
Architecture, authoritative net-
work architecture forged by Sie-
mens and IBM. SSA makes it
possible to network printers, scan-
ners and magnetic storage media
or even workstations, servers and
PCs with a high-speed and efficient
connection.
SSA is based on loop architecture
(circular networking) and can
work with up to eight controllers
(e.g. workstations) per loop. The
workstations themselves can be
connected to a maximum of 128
devices within the loop (e.g. hard
disks).
The American company, Pathlight
developed the IMageNet SSA
Workgroup Storage Network on
the basis of SSA. This network cur-
rently offers a bandwidth of 80
MB/s; 160 MB/s is planned. For
this reason it is particularly suited
to the data-intensive applications
so typical of digital post-editing.
Stabilizer
1) Simplified version of a timebase
corrector (
àTBC). With simplified
switchings, the stabilizer ensures
that the video signals passing
through it are freed from
àJITTER