HUD Distortion Correction Circuit With Per-Area Error Detection
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Solution Overview
Problem
Existing head-up display systems lack the ability to detect and address distortion correction errors on a per-area basis, leading to potential display errors such as shape, size, or color discrepancies, which can compromise the integrity of the displayed information.
Innovation Solution
A circuit device with a distortion correction circuit and an error detection circuit that performs distortion correction on input image data and compares divisional areas of the input and output images to detect errors, allowing for targeted error correction on specific areas rather than the entire screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If common error detection for the entire screen is performed, then the detection process is simple, but only common processing for dealing with errors for the entire screen can be performed
Solution Approach 1:
The screen is divided into multiple divisional areas, and error detection is performed separately for each divisional area rather than treating the entire screen as a single unit. This allows the system to detect errors in specific regions independently, enabling targeted error processing for affected areas only.
2Ease of operation
If distortion correction is performed on the entire image, then the correction process is uniform, but errors in specific areas cannot be detected and corrected individually
Solution Approach 1:
The image is divided into multiple divisional areas before distortion correction. Error detection is then performed on each divisional area independently by comparing original and corrected images in that specific area. This enables precise error detection in affected regions without requiring complex processing of the entire image.
3Reliability
If error detection is performed on the entire screen, then the detection coverage is complete, but the processing efficiency is reduced due to unnecessary processing of error-free areas
Solution Approach 1:
The screen is segmented into multiple divisional areas, and error detection is performed independently on each area. This allows the system to identify and process only the specific areas where errors occur, rather than processing the entire screen uniformly, thereby improving processing efficiency while maintaining complete error detection coverage.
Solution Approach 2:
Error detection and processing are applied locally to specific divisional areas where errors are detected, rather than applying uniform processing to the entire screen. This localised approach maintains reliability by detecting all errors while improving productivity by avoiding unnecessary processing of error-free areas.
Data Source
AI summary
A circuit device is used for a head-up display apparatus. The circuit device includes a distortion correction circuit and an error detection circuit. The distortion correction circuit performs a distortion correction on input image data as image data of an input image and outputs output image data as image data of an output image after the distortion correction. Respective first divisional areas of a first divisional area group formed by division of the input image correspond to respective second divisional areas of a second divisional area group in the output image in the distortion correction. Here, the error detection circuit performs detection of a distortion correction error of the respective second divisional areas by comparing the input image data of the respective first divisional areas to the output image data of the respective second divisional areas.