4. Operating
Barco – Eos Workstation for Windows – DOC-3062-2 – Revision 12 – August-2004
____________________________________________________________________________
4-2
4.1
Input cards
For showing information from external sources like video or RGB data on a Barco display wall a set of input cards
is provided. For integration of video the Q
UAD
A
NALOG
V
IDEO
C
ARD
and the S
TREAMING
V
IDEO
C
ARD
are available and
RGB data can be shown with the D
UAL
RGB
I
NPUT
C
ARD
. Multiple input cards can be inserted into an E
OS
.
A software application video.exe is provided with the E
OS
for controlling all these cards. Even though each type of
input signal, analog video, streaming video and RGB has its own tailored dialog, in all cases the window to dis-
play a signal will be called video window. The video windows can be scaled and moved within the projection
cubes connected to E
OS
.
In general downscaling of the data is performed by the input card, upscaling is performed by the O
MNI
S
CALER
unless otherwise explained below.
4.1.1
Quad Analog Video Card
Four different analog video sources (VHS or S-VHS) can be connected to a single Q
UAD
A
NALOG
V
IDEO
C
ARD
and dis-
played simultaneously. Q
UAD
A
NALOG
V
IDEO
C
ARDS
can also be used to realize distributed video, see section
4.1.2
Streaming Video Card
Up to four MPEG-2 D-1 or CIF video streams per S
TREAMING
V
IDEO
C
ARD
can be decoded and displayed simultane-
ously by one S
TREAMING
V
IDEO
C
ARD
. S
TREAMING
V
IDEO
C
ARDS
can also be used to realize distributed video, see section
4.1.3
Dual RGB Input Card
The D
UAL
RGB
I
NPUT
C
ARD
digitizes one or two analog monitor signals. In dual input mode it supports two monitor
signals with a pixel frequency between 10 MHz and 135 MHz, in single input mode it supports one signal with a
pixel frequency up to 270 MHz. The most common VESA timings are stored as presets. In addition, user defined
timings can be saved. The timing and aspect ratio of the connected RGB signal are detected automatically.
The D
UAL
RGB
I
NPUT
C
ARD
has an automated static frame rate reduction depending on number and type of the
signals it processes, please see the table below.
static frame rate reduction*
used socket
dual input mode (two signals, both
≤
1280×1024@75Hz)
1/3
RGB in 1
AND
RGB in 2
single input mode (one signal
≤
1280×1024@75Hz)
1
RGB in 1
OR
RGB in 2
single input mode (one signal
>
1280×1024@75Hz)
1/2
RGB in 1
Table 4-1
static frame rate reduction for RGB sources
(* values are valid from display driver release 3.41 on and Control ware 6 of the D
UAL
RGB
I
NPUT
C
ARD
)
To take advantage of the higher frame rate for signals
≤
1280×1024@75Hz in single input mode, the other
socket may be connected to a second signal but that signal may not be displayed on the display wall.
The video software allows selecting additionally a dynamic frame rate reduction of the source, which must be
multiplied to the static frame rate reduction to obtain the overall frame rate reduction.
