High-security graph generation device based on FPGA

Abstract

The invention provides a high-security graph generation device based on an FPGA. The high-security graph generation device comprises an FPGA chip, a graph drawing processor, a character memory, a video memory, a graph monitoring processor and a monitoring template memory. The FPGA chip comprises a bus receiving buffer area, a synchronous handshake module, a drawing instruction buffer area, a graph drawing module, a security monitoring setting module, an ECC verification module, a display output adjustment module, a display output CRC module, a monitoring data extraction module and a monitoring data comparison module. According to the invention, the graph generation process in the high-security-level field such as aviation can be effectively monitored, the correctness of graph drawing is ensured, the security design of a display system is improved, misleading of picture display error information to a pilot is avoided, and the high-security-level target of the display system is met.

Description

technical field [0001] The invention relates to an FPGA-based high-security graphic generation device, which belongs to the field of graphic display security design. Background technique [0002] Safety is an important characteristic of aviation products. It affects the life safety of aircraft and passengers, and is an inherent attribute of aircraft. The safety design work is a design analysis work that must be carried out in the development process of civil airborne products, and it runs through all stages of the product from conceptual design to design verification. [0003] The airborne display system is an important part of the aircraft avionics system. It is the window for the flight to obtain the flight attitude parameters and control the flight control. Therefore, the design assurance level is generally the highest level (A level), and the graphics generation device is the onboard display. It is the core of the system, so it is very necessary to carry out security mo...

AI Technical Summary

Problems solved by technology

[0004] At present, the graphic generation device of the airborne display system generally does not have safety monitoring measures, and it is necessary to add a safety monitoring circuit to ensure the correctness of the generated graphics, and this idea will increase the burden of the circuit and the monitoring coverage process will appear incomplete question

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