Multi-channel DVI (digital Visual Interface) image fusion correction control host

Abstract

The invention discloses a multi-channel DVI (digital Visual Interface) image fusion correction control host. The multi-channel DVI image fusion correction control host uses an ARM CPU as a management center, uses an FPGA (field programmable gate array) as an image processing unit, performs multi-channel high-resolution DVI image acquisition, and synchronizes multi-channel images for fusion output in a strict parallel way. The host comprises an ARM CPU main board and four channel boards, wherein the channel board internally comprises an FPGA programmable logic device, a double-link DVI input module, a double-link DVI output module, a QDR2 (quad data rate) data access module and a DDR2 (double data rate 2) data access module of a digital image processing circuit; all the components are distributed on an ARM core board, the main board and the four parallel-running channel boards; the ARM core board and the channel boards are connected with the main board through inter-board connectors; the channel number can be extended between hosts through cascading ports. The multi-channel DVI image fusion correction control host effectively overcomes the defects that the conventional PC computing cluster is expensive and synchronization and timeliness of output contents cannot be consistent completely; the embedded FPGA image processing unit effectively reduces space occupancy; an image output by an double-link DVI is high in resolution; different transformation parameter tables can be adapted to different projection screens.

Description

1. Technical Field [0001] The invention belongs to the field of electronic application technology, and relates to a multi-channel image fusion technology, specifically a multi-channel DVI image fusion correction control host. 2. Background technology [0002] At present, in response to the needs of large-scale projection display and LED screen display, there are more and more applications for fusing multiple display channel images into a large-scale scene image output. Mainly for high-resolution, large field of view, special-shaped curved surface projection environment, used in training centers, command and control centers, large conference display screens, financial center data display environment, manufacturing control visualization, urban management visualization environment. [0003] The currently widely adopted structure scheme for large display systems is a high-performance PC networking synchronization method, which is simple and convenient. The display system is mainly com...

AI Technical Summary

Problems solved by technology

This type of system has high requirements on the performance of hardware such as computers and graphics cards, and the cost of GPU graphics cards is high.

In addition, due to network lag, the synchronization and real-time performance of multi-channel display output content cannot be completely consistent in this networked working mode.

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