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7. Advanced
7.5.6.7
Transport Delay
What is Transport Delay ?
The Transport Delay is the interval between the time at which an image frame is received from the
fi
rst FPGA of the PMP and the
time at which the processing of this frame starts in the second FPGA of the PMP.
frame B
frame C
frame D
frame B
frame C
frame D
z
z = transport delay or TDR
signal coming
from PMP (1st step)
signal processing
in PMP (2nd step)
Image 7-77
Transport delay
During this delay all image information is stored in a memory block on the PMP.
A Transport Delay set to the maximum value of 1023, corresponds with a delay of 16 ms.
What can be done with the Transport Delay ?
The data
fl
ow of any frame starts with pixel 1 of line 1 of this frame and is processed line by line.
In the example of a top side bow distortion, the
fi
rst pixel to be displayed is not pixel 1 of the original line 1, but pixel x (>1) of the
original line 1. This means that every pixel which comes before pixel x in the original line 1 must be stored in a temporary memory,
before the processing of the frame can start.
Image 7-78
Transport Delay basic principle
The Transport delay can be adjusted manually or can be set to automatic.
A short Transport delay creates a small delay with respect to the source, but a large delay is needed in case extremely distorted
images are needed (extremely curved screens).
A delay set too short may introduce ’clipping’ phenomenons in the image.
How to set Transport Delay to manual or automatic ?
1. Start up the Geometry
Edit
menu
2. Push the cursor key
↑
or
↓
to highlight
Transport Delay...
and press
ENTER
to select.
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R59770330 SIM 7QP SERIES 07/10/2013
Summary of Contents for 7QP
Page 8: ...Table of contents 4 R59770330 SIM 7QP SERIES 07 10 2013 ...
Page 13: ...2 Packaging 2 PACKAGING Overview Unpacking R59770330 SIM 7QP SERIES 07 10 2013 9 ...
Page 16: ...2 Packaging 12 R59770330 SIM 7QP SERIES 07 10 2013 ...
Page 52: ...4 Installation 48 R59770330 SIM 7QP SERIES 07 10 2013 ...
Page 64: ...5 Setup 2 Now the zoom and focus can be adjusted 60 R59770330 SIM 7QP SERIES 07 10 2013 ...
Page 76: ...6 Getting started 72 R59770330 SIM 7QP SERIES 07 10 2013 ...
Page 196: ...7 Advanced Image 7 157 192 R59770330 SIM 7QP SERIES 07 10 2013 ...
Page 258: ...9 Troubleshooting 254 R59770330 SIM 7QP SERIES 07 10 2013 ...
Page 268: ...A NVG option for SIM 7QP 264 R59770330 SIM 7QP SERIES 07 10 2013 ...
Page 272: ...B NVG option for SIM 7QP HC 268 R59770330 SIM 7QP SERIES 07 10 2013 ...
Page 273: ...C GLD alignment C GLD ALIGNMENT Overview Gamma values R59770330 SIM 7QP SERIES 07 10 2013 269 ...
Page 275: ...D Image files D IMAGE FILES Overview Image files R59770330 SIM 7QP SERIES 07 10 2013 271 ...
Page 280: ...Glossary 276 R59770330 SIM 7QP SERIES 07 10 2013 ...
Page 284: ...Index 280 R59770330 SIM 7QP SERIES 07 10 2013 ...