Head-Up Display Image Integrity Verification Circuit
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Solution Overview
Problem
Existing head-up display systems do not effectively verify image data integrity when the display image is rotated due to mounting angle tolerances, leading to potential errors in image display.
Innovation Solution
A circuit device with an image processing circuit that performs a first mapping and rotation process on input images, followed by a reverse mapping and rotation process to generate a third image for comparison with the original, allowing for error detection in the second image displayed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If image rotation is performed to compensate for mounting angle tolerance, then display image inclination is corrected, but image data integrity verification becomes difficult
Solution Approach 1:
The patent applies preliminary action by performing reverse rotation on the image data before outputting it to the head-up display. This reverse rotation compensates for the mounting angle tolerance in advance, ensuring that the displayed image is not inclined even when the mounting angle varies. By preprocessing the image data with reverse rotation, the system maintains display accuracy without requiring precise mounting control.
Solution Approach 2:
The patent uses copying by creating a copy of the image data and performing reverse rotation on the copy before outputting it to the display. The original image data and the reversed copy are both processed, allowing the system to verify image integrity while providing compensation for mounting angle variations. This copying approach enables dual functionality: verification and compensation.
2Measurement precision
If reverse mapping and reverse rotation processes are added to verify image data, then error detection capability is improved, but processing complexity increases
Solution Approach 1:
The patent merges the verification process with the existing image processing pipeline by integrating reverse mapping and reverse rotation operations into the same processing flow. Instead of adding separate verification systems, the patent combines multiple functions (mapping, rotation, reverse mapping, reverse rotation) into a unified processing sequence, reducing overall system complexity while maintaining error detection capability.
Solution Approach 2:
The patent implements feedback by comparing the results of reverse mapping and reverse rotation with the original image data. This feedback mechanism allows the system to detect errors in the image processing pipeline by verifying whether the reversed operations correctly restore the original image. The feedback loop ensures processing accuracy without requiring complex external verification systems.
Data Source
AI summary
A circuit device includes an image processing circuit and a comparison circuit. The image processing circuit performs a first mapping process and a first rotation process on an input image to generate an image for a head up display. The image processing circuit performs, on an image, a second mapping process that is a reverse mapping process of the first mapping process and a second rotation process that is a reverse rotation process of the first rotation process to generate an image. The comparison circuit performs a comparison between the image and the image and outputs a result of the comparison as information for detecting an error in the image.