Gige Vision Specific Features; Udp Packet Resend Mechanism - Smartek UCC User Manual

5.6 GigE Vision Specific Features
The network interface of SMARTEK Vision digital cameras is designed to be fully compatible with the GigE
Vision standard. The following section describes features of the data interface of the twentynine series as
well as the SMARTEK Vision GigEVision Filter Driver. Further, several optimization settings of the network
driver are introduced and the pixel structure of the image data is elaborated.

5.6.1 UDP Packet Resend Mechanism

The Packet Resend mechanism is a driver feature that, when enabled, tries to regain packets that have
been lost during transmission. It checks the order of the incoming packets and detects if one or even a
group of packets is missing in a stream. Depending on the parameters settings the driver will then send one
or several resend requests to the camera which resends the appropriate packets. Table 38 shows the basic
driver parameters available.
Parameter
SetParametersToDefault
MaxImageSize
EnablePacketResend
AcceptIncompleteImage
LineFormat
Table 39 lists further parameters, allowing a detailed configuration of the Packet Resent mechanism. All this
parameters mainly affect the performance and the robustness of the packet resending, changes should only
be done carefully.
Type
CMD
Integer
Boolean
Boolean
Enumeration Internal (electrical) circuit of the line
Table 38: Packet Resend Parameters (1/2)
67
Description
Resets all parameters of the Packet Resend
mechanism to the default values
Maximum image size that the Packet Resend
mechanism will handle
Enables / Disables the Packet Resend
mechanism
Enables / Disables the acceptance of images
where payload packets are missing
SMARTEK Vision | User Manual - twentynine | Doc. v1.0.2
User Manual - twentynine