Video interface expansion device and method based on FPGA

Abstract

The invention provides a video interface expansion device based on an FPGA. The device comprises the FPGA, a plurality of video interface receiving conversion chips, a first memory, and a CPU. The output end of each video interface receiving conversion chip is connected to the input end of the FPGA. The first memory is connected to the FPGA. The FPGA is connected to the CPU. The invention furtherprovides a video interface expansion method based on the FPGA. The device and the method have the advantages that a video interface can be expanded at a low cost, and the multi-channel video is simultaneously input.

Description

Technical field [0001] The invention relates to a video interface expansion device and method, in particular to a video interface expansion device and method based on FPGA implementation. Background technique [0002] With the advancement of information technology, people are increasingly using video conferencing to conduct remote discussions and improve work efficiency. Video conference refers to a conference in which people located in two or more locations conduct online conversations through communication equipment and the network. Multiple video sources need to be connected to the video conference equipment in real time and in high definition and transmitted to the end. [0003] However, most of the existing CPUs do not integrate video input interfaces such as HDMI and VGA. If you need to use the video function, there are two traditional methods as follows: One is to transfer through the MIPI, BT1120 and other interfaces on the CPU. Then, the second is to use multiple CPU sol...

AI Technical Summary

Problems solved by technology

[0003] However, most of the existing CPUs do not integrate video input interfaces such as HDMI and VGA. If you need to use video functions, the traditional method has the following two methods: one is to transfer through the MIPI, BT1120 and other interfaces on the CPU. The second is to use multiple CPU solutions for processing, and the third is to connect to an external video matrix

But the traditional method has the following defects: the interface of the CPU is limited in the first method, and there are few CPUs with more interfaces. When multiple HDMI and VGA inputs are needed, the problem that one CPU cannot handle; the second method has complex design, The cost is high, and the delay of the video image will be longer after multi-CPU processing, which will affect the user experience; the third method has the problem of high cost and inconvenient control of the CPU

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