Image processor for mosaic screen

Abstract

The invention discloses an image processor for a mosaic screen. The image processor comprises a plurality of video input modules and a plurality of video output modules, wherein the video input modules are used for receiving external video signal input; the video output modules are used for outputting video signals to display units of the mosaic screen; the video input modules are sequentially connected in series; the video output modules are sequentially connected in series; and the video input module of the last stage is connected in series with the video output module of the first stage. The number of the video input module can be flexibly increased or decreased according to the number of video paths to be connected, and the number of the video output modules can be flexibly increased or decreased according to the number of display units to be driven. When a certain video image processing sub-module in the video input module or video output module of a certain stage fails, data also can be transmitted through another video image processing sub-module in the video input module or video output module of the stage, so that the whole mosaic screen can run.

Description

technical field [0001] The invention relates to an image processor of a splicing screen display system. Background technique [0002] The image processor is a device used to drive the splicing display wall, which can be connected to various video format signals, including CVBS, YPBPR, VGA and DVI, etc., and output to the display wall unit through the DVI signal or VGA signal. In the existing image processor, the interaction of video data and control data between the video input card 91 and the video output card 92 is realized through the parallel exchange of the dedicated switch chip 93, and its realization principle is as follows figure 1 shown. As shown in the figure, the video input card 91 is composed of a plurality of video input modules 911 , and the video output card 92 is composed of a plurality of video output modules 921 . When the video input signal that needs to be input to a certain video input module is displayed on the splicing display wall, the switching ch...

AI Technical Summary

Problems solved by technology

Since each video input module 911 and video output module 921 occupy one video access port of the switch chip 93, the scale of video input and output is limited by the number of switch chip 93 access ports

When it exceeds the number of access ports of the switch chip, it needs to be redesigned, and when it is less than the number of access ports of the switch chip, it will cause waste

With the splicing screen image processor of this structure, if the control system or the switching chip fails in actual use, all input video signals may not be output normally, causing the entire splicing display wall to fail to display normally.

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