A DVI Image Distortion Correction Device Anti-Single Event Flip

Abstract

The invention proposes a DVI image distortion correction device that resists single particle flipping, including an FPGA unit, an ARM monitoring unit, a non-volatile memory FLASH and a cache SRAM with ECC verification; the FPGA completes the distortion correction of the image, and the ARM completes the distortion correction of the image. Monitor the running status of each module in the FPGA. In order to ensure the anti-single particle flipping of DVI distortion correction, error correction and error detection codes are added during the data transmission and storage process, and monitoring sequences are added to the algorithm data stream, including: Multivariate error correction and error detection codes are used to read and write lookup table data in FLASH RS code; select cache SRAM with ECC verification; DVI data is cached, read and written in the FPGA internal DRAM using ECC verification; insert a monitoring sequence into the DVI image VESA timing line synchronization blanking period to monitor the status of the algorithm data flow; ARM monitors each of the above operating states in real time and reconfigures the FPGA when an exception occurs. The present invention not only enables data sources and redundant information to have self-protection functions, but also has the advantages of high resource utilization, good real-time performance, and strong operability compared with other existing technologies.

Description

technical field [0001] The invention relates to a DVI image distortion correction device capable of resisting single-event reversal, and belongs to the field of image distortion correction. Background technique [0002] Large field of view optical devices are widely used in aerospace vehicles, which have significant advantages such as wide viewing range and high resolution. However, due to the large off-axis angle of the objective lens of this type of equipment, the display screen is seriously distorted, causing specific changes in the size and shape of the image, and reducing the display quality and display accuracy. Therefore, it is necessary and necessary to correct the distorted image. [0003] The current distortion correction technology is usually completed by using FPGA. The geometric correction between the corrected image and the original image is realized by a look-up table, and then the gray scale reconstruction of the corrected points is completed through bilinea...

AI Technical Summary

Problems solved by technology

Scrubbing technology will increase the complexity of system design, and its method itself cannot verify whether the stored content is subject to SEU; ECC information redundancy detection and correction technology redundant information itself does not have self-protection function, which has limitations; and three-mode redundancy It will greatly consume system resources

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