Analog display system based on reverse bilinear interpolation

By using an analog display system based on inverse bilinear interpolation, the problem of image jitter caused by quantization errors in avionics information equipment has been solved, and a stable display effect has been achieved.

CN118072684BActive Publication Date: 2026-06-12LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
Filing Date
2023-11-09
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

In avionics information equipment, quantization errors during the conversion of analog signals to digital signals cause noticeable pixel jitter and glitches in the image, affecting the display effect.

⚗Method used

An analog display system based on inverse bilinear interpolation is adopted, including an analog-to-digital signal conversion unit, an XY coordinate mapping unit, a digital coordinate splitting unit, an inverse bilinear interpolation calculation unit, and a digital afterglow calculation unit. Through the processing of these units, the grayscale value of the 2x2 neighborhood map is calculated to achieve smooth display of the screen.

🎯Benefits of technology

It effectively avoids screen jitter caused by quantization errors, achieving a stable display effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application belongs to the technical field of avionics information equipment image processing, and particularly relates to a simulation display system based on reverse bilinear interpolation, which comprises an analog-digital signal conversion unit, an XY coordinate mapping unit, a digital coordinate splitting unit, a reverse bilinear interpolation calculation unit and a digital afterglow calculation unit. The analog-digital signal conversion unit processes received analog signals, and the processed signals are further processed by the XY coordinate mapping unit and the digital coordinate splitting unit, and then input into the reverse bilinear interpolation calculation unit. The reverse bilinear interpolation calculation unit receives data information output by the digital coordinate splitting unit, and performs calculation inside the reverse bilinear interpolation calculation unit. The reverse bilinear interpolation calculation unit inputs the calculation result into the digital afterglow calculation unit, and the result is reflected in the digital afterglow calculation unit. The digital afterglow calculation unit calculates the gray scale values of four neighborhood points in a 2x2 neighborhood, so as to realize smooth display of a picture.
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