Distributed screen splicing control system and control method

Abstract

The invention provides a distributed screen splicing control system and a control method. A server of the system outputs a splicing instruction to a linked video processing unit through a switch according to received screen splicing information; the video processing unit is connected with m video sources through video lines, is linked with the server through the switch, obtains video data according to the splicing instruction and the information of the video sources, carries out image segmentation, encoding and package to the video data in a splicing mode, and outputs packaged code streams according to addresses of display processors; n display processors are connected with n sub-screens through the video lines, and any one display processor is linked with the server and receives the packaged code stream corresponding to the address of the display processor from the switch, analyzes and decodes the packaged code stream and then outputs the packaged code stream to the sub-screen connected with the display processor to display. With the adoption of the method and the system, the expandability can be increased, the distance limit of transmitting an analog signal is eliminated, and the cost of transmitting the analog signal is reduced.

Description

technical field [0001] The invention relates to the field of video monitoring, in particular to a distributed screen splicing control system and control method. Background technique [0002] At present, in the video surveillance industry, a centralized screen splicing control system is usually used to realize large-screen control display. figure 1 It is a structural schematic diagram of an existing centralized screen splicing control system. Combine now figure 1 , to describe the existing centralized screen splicing control system, as follows: [0003] The existing centralized screen splicing control system connects a*b sub-screens, analog monitoring point 101, network monitoring point 103, digital video recorder (Digital Video Recorder, DVR) / network video server (Digital Video Server, DVS) 104 and VGA (Video Graphics Array) / DVI (Digital Visual Interface) signal source 105, the existing centralized screen splicing control system includes: video matrix processor 102, multi...

AI Technical Summary

Problems solved by technology

[0005] The structure of the existing centralized screen splicing control system is completely determined by the number of connected sub-screens and the splicing method. Once the number and splicing method of the sub-screens that complete a screen splicing are determined, the hardware structure of the centralized screen splicing control system It is determined that it is not easy for subsequent expansion applications, and the scalability is poor; for non-network access video sources, such as BNC video sources, VGA video sources, DVI video sources, etc., it can only transmit analog signals through video cables. For long-distance transmission, not only the access distance will be limited by the video cable, but also the hardware cost of the system will be affected by the access distance of non-network access video sources

To sum up, the existing centralized screen splicing control system has poor scalability, the distance of transmitting analog signals is limited, and the cost of transmitting analog signals is high, which needs further improvement

Images