Echo Image Display Device Interpolation
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Solution Overview
Problem
Radar image display devices experience coarse changes in the echo image when the detection range or surrounding situation changes, leading to an odd transition of the display screen, which can be uninformative for users.
Innovation Solution
An echo image display device comprising a receiver, information memory, and intermediate image production component that produces and displays an intermediate image by linear or curve interpolation using detection information from previous scans, allowing for smoother representation of changes in the detection object or region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the radar antenna rotates 360° to refresh the display screen, then the display is updated with new detection information, but the transition of the display screen becomes coarse and looks odd to the user
Solution Approach 1:
The system performs preliminary actions by storing detection information from multiple past scans (N-1, N-2, N-3 scans) before the current scan is complete. This allows the system to prepare intermediate images in advance, so when the display needs updating, smooth transitions are already ready to be shown, eliminating the coarse transition effect.
Solution Approach 2:
The patent introduces an intermediary element - the intermediate image - that mediates between the discrete radar scans. By generating intermediate images through interpolation between past scans, the system creates a continuous visual transition rather than abrupt jumps, thus smoothing the display transition while maintaining detection accuracy.
2Measurement precision
If the radar antenna rotates slowly to ensure detection accuracy, then detection information is reliable, but the display refresh rate is low causing coarse transitions
Solution Approach 1:
The system creates copies of past detection information from multiple previous scans (N-1, N-2, N-3 scans) and uses these copies to generate intermediate images. This allows the display to show multiple updated frames based on copied data while the actual radar antenna continues rotating at its original slow speed for accurate detection.
Solution Approach 2:
The system performs preliminary processing by storing and preparing detection information from multiple past scans before they are needed for display. This preliminary action enables the generation of intermediate images that can be displayed at a higher rate than the actual scan rate, effectively decoupling detection speed from display refresh rate.
3Ease of operation
If intermediate images are generated by interpolation between past scans, then display transitions become smooth, but computational complexity increases
Solution Approach 1:
The patent segments the detection information into multiple distinct past scans (N-1, N-2, N-3 scans) stored separately in memory. This segmentation allows the system to selectively use only the necessary past scans for intermediate image generation, rather than processing all available data, thus reducing computational complexity while maintaining smooth transitions.
Data Source
AI summary
An echo image display device includes a receiver, an information memory, an intermediate image production component, and a display component. The receiver is configured to receive a reception signal that is a reflection of a transmitted signal. The information memory is configured to store detection information about the reception signal received by the receiver and position information about the reception signal in association with each other. The intermediate image production component is configured to produce an intermediate image based on at least the detection information for the reception signal at an N-th scan, and the detection information for the reception signal at an N−1-th scan having the same position information as the position information for the reception signal at the N-th scan. The display component is configured to display the intermediate image produced by the intermediate image production component.