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vDisplay HDI-Pro IP Engine User Guide
9.
Close the
GEV Device Control
dialog box.
The vDisplay IP engine uses the persistent IP address first, but if this option if set to
False
, it uses the IP
address provided by DHCP next, and if this fails, uses LLA to find an available IP address. LLA cannot be
disabled and is
True
by default.
Controlling the Video Stream
Using the
GEVPlayer
options in the
GEV Device Control
dialog box, you can configure how the
vDisplay IP engine streams video to your display devices. The video streaming options can affect the
performance and display of images through buffering, provide you with the ability to display partial
images under packet-loss scenarios, and allow you to define a partial image.
Ensure you have selected the
Guru
level of visibility to access all of the controls discussed in the following
sections.
Configuring the Buffer Count
You can use either one or three buffers for reassembling images. If you select one buffer, the vDisplay IP
engine immediately displays the image packets as they are received, without first attempting to reassemble
an entire image. If you choose three buffers, the vDisplay IP engine uses the buffers to attempt to
reassemble an entire image before displaying it.
Using the single buffer means that images are displayed as packets are received. This mode provides the
lowest latency, but pixels from different video frames can appear on the same screen as the image is
updated. Therefore, using a single buffer is only recommended where the absolute lowest latency is
required.
When using three buffers, one buffer is used to completely receive an image. After the image is completely
received, it is placed in another buffer and queued for display. This mode of operation is recommended
because the vDisplay attempts to reassemble packets to form a complete image before displaying it.
To configure the buffer count
1.
Start
GEVPlayer
and click
Select
/
Connect
.
2.
Click the vDisplay IP engine in the
Available GigE Vision Devices
list.
3.
Click
OK
in the bottom right corner.
4.
Click
GEV Device control
in the
Parameters and Controls
section.
