A network port filter driving method based on gige Vision

Abstract

The invention discloses a network interface filter driving method based on GigE Vision. The method comprises the following steps: a network filter driver is installed, and data frame filter criteria are registered in the Windows kernel through the network filter driver, wherein the filter criteria comprises data frame source addresses, data frame destination addresses, data frame transmission types, and data frame port models; and the network filter driver judges whether each data frame arriving at a network interface complies with the filter criteria, the data frames complying with the filtercriteria are directly stored in a pre-registered image buffer area, and the data frames not complying with the filter criteria are forwarded to an upper driver, wherein sequence detection is carriedout on each data frame arriving at the network interface before the data frames are directly stored in the pre-registered image buffer area. The method disclosed by the invention has the advantages that the CPU load is lower, and the phenomena of data frame losses and disorders can be effectively avoided.

Description

technical field [0001] The invention relates to the technical field of network transmission, in particular to a network port filter driving method based on GigE Vision. Background technique [0002] At present, the communication methods of industrial cameras mainly include 1394 interface, USB interface, ameraLink interface and Gigabit network interface. The transmission distance of the 1394 interface, USB interface, and ameraLink interface is limited, while the Gigabit network interface communication has been widely used because of its long transmission distance, high transmission speed, large number of networking devices, and no need for data acquisition cards. . Mainstream industrial camera manufacturers, foreign countries such as Balser in Germany, JAI in Japan, E2V in the United Kingdom, Dalsa in Canada, Vieworks in South Korea, and domestic companies such as Daheng, Jiaheng Zhongzi, and Weishi Image, all have a variety of industrial camera products for Gigabit network ...

AI Technical Summary

Problems solved by technology

Although the GigE Vision protocol can provide reliability, flow control or error recovery functions, the Socket communication that comes with Windows will poll the current network frame transmitted by GigE Vision, so when the data transmission increases, the CPU usage will be significantly increased. GigE Vision occupies relatively high CPU resources, and in the case of fluctuating network conditions or network congestion, data frames may be lost or out of order, and there is no corresponding retransmission mechanism to process data frames, so that the received Frame loss and garbled frames appear in the data frame

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