Head-Up Display Rendering With Dynamic Delay Correction
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Solution Overview
Problem
Existing rendering systems for head-up displays struggle with accurately projecting virtual images due to delays in detecting objects and updating display positions, leading to displacement issues caused by the movement of the moving body, which affects the precision and design flexibility of the system.
Innovation Solution
A rendering system comprising a first obtainer for position information, a second obtainer for movement information, a renderer for creating the display image, an estimator for calculating the delay period, and a corrector for adjusting the display position, which dynamically updates the delay period and corrects displacements based on movement data, eliminating the need for fixed delay values and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed delay value is used for display position correction, then system design is simplified, but accuracy of correcting display position displacements deteriorates due to movement variations
Solution Approach 1:
The patent applies dynamics by transitioning from a fixed delay value to a dynamically updated delay period. The delay period is continuously updated based on actual detection delays and movement information, allowing the system to adapt to varying movement conditions and maintain high accuracy in display position correction without requiring overly complex preset configurations.
Solution Approach 2:
The patent implements feedback by using the estimated delay period to correct display positions and then updating the delay period based on subsequent detection results. This closed-loop feedback mechanism continuously refines the delay estimation, improving correction accuracy while the system learns from actual operational data rather than relying solely on preset values.
2Adaptability or versatility
If preset delay values are used for all conditions, then device complexity is reduced, but adaptability to different movement states deteriorates
Solution Approach 1:
The system dynamically adjusts the delay period based on real-time movement information and detection delays, enabling adaptation to different movement states without requiring multiple preset delay values for various conditions. This dynamic adjustment mechanism provides versatility while keeping processing requirements manageable.
Solution Approach 2:
The system performs self-service by automatically updating the delay period based on its own operational data and detected movement patterns. Rather than requiring external configuration or complex preset tables, the system learns and adjusts its own parameters through continuous operation, improving adaptability with minimal additional processing burden.
3Manufacturing precision
If delay period is not updated dynamically, then processing load is reduced, but accuracy of virtual image projection deteriorates due to displacement errors
Solution Approach 1:
The patent implements dynamic updating of the delay period based on actual detection delays and movement information, significantly improving the precision of virtual image projection. The delay period is updated only when necessary based on changes in movement patterns, which maintains high precision while avoiding excessive processing operations during stable conditions.
Solution Approach 2:
The system employs periodic updates of the delay period rather than continuous updates, balancing precision requirements with processing load. The delay period is updated at appropriate intervals based on movement changes and detection cycles, ensuring accurate virtual image projection without imposing excessive processing demands on the system.
Data Source
AI summary
A rendering system includes a first obtainer, a second obtainer, a renderer, an estimator, and a corrector. The first obtainer obtains position information indicating a position of an object from a detector. The second obtainer obtains movement information indicating a movement state of the moving body. The renderer renders a display image including a content related to the object. The estimator estimates a delay period by comparing the position information to estimated-position information indicating an estimated position of the object estimated based on the movement information of the object. The corrector corrects displacement of a display position of the content on the display image which is caused by movement of the moving body over the delay period.