Video compression transmission method and system

Abstract

The invention discloses a video compression transmission method and system. The method comprises the following steps that: a compression function module compresses video data acquired from a video card into compressed video data and transmits the compressed video data to a check segmentation control module; the check segmentation control module checks the compressed video data to obtain control information to be written into the descriptor generation module, and writes the compressed video data into a plurality of random access memories at the same time; an Ethernet data link controller module obtains a descriptor generated based on the control information from a descriptor generation module through an interface conversion module, and reads compressed video data from a plurality of random access memories based on the descriptor; and the compressed video data is converted into an Ethernet frame format by the Ethernet data link controller module so as to be transmitted through a physical network card. According to the invention, the resource occupation of the video function can be reduced, and the overall performance of the substrate management control system is improved.

Description

technical field [0001] The present invention relates to the field of data transmission, more specifically, to a video compression transmission method and system. Background technique [0002] The transmission process of compressed video in the traditional baseboard management control system is: first write the compressed video data into the DDR (memory), and generate an interrupt to inform the CPU (processor) that there is already compressed video data in the DDR that can be read. Then the CPU generates corresponding descriptor information according to the format requirements of the EMAC (Ethernet Data Link Controller) (the most important thing in the descriptor is the number of data bytes to be read by the EMAC and the DDR address to be read), and Write descriptor information to DDR. The EMAC obtains the descriptor and parses it, obtains the compressed video data to be read according to the corresponding DDR address, and after processing inside the EMAC, sends it to the PH...

AI Technical Summary

Problems solved by technology

[0003] It can be seen that the prior art involves multiple interactive operations between CPU / bus / DDR (3 CPU interactions, 3 DDR interactions, and these interactions are accompanied by bus operations), which greatly occupies the CPU and DDR, resulting in Video Capabilities Seriously Limit Baseboard Management Control System Performance

[0004] There is currently no effective solution for the problem that the video function of the substrate management control system occupies too much resources and affects other functions in the prior art

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