Vehicle Caution Mark Overlay With Motion-Based Position Correction
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Solution Overview
Problem
Existing display systems for vehicles, such as head-up displays, experience positional misalignment between caution marks and actual targets due to processing time lags and vehicle velocity, leading to inadequate caution mark placement.
Innovation Solution
A display control device that acquires positional and velocity information, offsets the caution mark position based on the approach direction and processing time, and adjusts the mark size according to distance, ensuring accurate overlay display of caution marks relative to targets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the caution mark is displayed at the detected target position without correction, then the display processing is simple and fast, but positional misalignment occurs between the caution mark and the actual target due to processing time lag and vehicle velocity
Solution Approach 1:
The patent applies preliminary action by calculating and applying the offset distance before displaying the caution mark. The offset section computes the positional correction based on detected target position, vehicle velocity, and processing time, then applies this correction in advance to ensure the caution mark is displayed at the correct position relative to the actual target.
Solution Approach 2:
The patent implements feedback by continuously monitoring vehicle velocity and processing time, then using this information to dynamically adjust the offset distance. The system measures the actual processing time from target detection to mark display, and uses this feedback to calculate the appropriate positional correction, creating a closed-loop control system that maintains accuracy despite varying processing speeds.
2Manufacturing precision
If the offset distance is increased to compensate for processing time, then positional alignment improves, but the caution mark may be displayed too far from the actual target position
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the offset distance based on multiple variables including vehicle velocity, processing time, and target distance. Rather than using a fixed offset, the system calculates the optimal offset distance by considering how each parameter affects the positional relationship between the caution mark and the actual target, allowing precise compensation without over-correction.
3Manufacturing precision
If correction processing is applied to all detected targets, then positioning accuracy is maintained, but processing time increases
Solution Approach 1:
The patent applies local quality by selectively applying offset correction based on the specific conditions of each target detection case. The system evaluates factors such as target distance, velocity, and urgency to determine the appropriate level of correction, applying more precise correction only where necessary while using simpler display for less critical targets, thus optimizing the balance between accuracy and processing speed.
Data Source
AI summary
A display control device comprises a memory; and a processor coupled to the memory. The processor is configured to acquire positional information related to a position of a target based on detection information of the target detected in surroundings of a vehicle, acquire velocity information related to a velocity of the vehicle, acquire an approach direction along which the target approaches the vehicle, offset the positional information in the approach direction based on the velocity information, and generate a mark urging caution with respect to the target for overlay display on a display area provided in a cabin of the vehicle based on the positional information that has been offset.