Head-Up Display Annoyance Control via Adaptive Update Frequency
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Solution Overview
Problem
Existing head-up display systems cause driver annoyance during intense vehicle movements and high-speed changes in the forward view, as guidance images may be significantly displaced from actual positions, leading to discomfort.
Innovation Solution
A head-up display system that includes a display unit, vehicle information acquisition, forward view information acquisition, display object detection, display control, and display form setting units, which calculate an annoyance value based on vehicle and forward view information to set the guidance image display form within a predetermined appropriate range, ensuring the image is not overly distracting during intense movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the guidance image is updated continuously to maintain accurate positioning, then the positioning accuracy is improved, but the driver annoyance increases during intense vehicle movements
Solution Approach 1:
The patent applies dynamics by making the update frequency of the guidance image adaptive rather than fixed. The control unit dynamically adjusts the update frequency based on detected vehicle movement intensity - using higher frequencies during stable conditions for accuracy, and lower frequencies during intense movements to reduce driver annoyance from rapid image changes
Solution Approach 2:
The patent changes the parameter of update frequency based on vehicle movement conditions. By monitoring acceleration and other movement parameters, the system adjusts the guidance image update rate to match driving conditions, balancing positioning accuracy with driver comfort by reducing update frequency when movement intensity exceeds thresholds
2Object-affected harmful factors
If the update cycle is extended to reduce driver annoyance during intense movements, then the driver annoyance is reduced, but the guidance image becomes significantly displaced from the actual position
Solution Approach 1:
The system dynamically adjusts update frequency based on real-time vehicle movement detection. During intense movements, the update cycle is extended to reduce annoyance, while during stable conditions, the update frequency increases to maintain accurate positioning, creating a dynamic balance between both requirements
3Adaptability or versatility
If the guidance image follows the forward view changes at high speed, then the guidance information remains relevant, but the rapid movement of the guidance image becomes disturbing to the driver
Solution Approach 1:
The patent implements periodic action by updating the guidance image at controlled intervals rather than continuously tracking forward view changes. The update period is adjusted based on vehicle speed and movement intensity, providing guidance information at relevant moments without creating continuous rapid movement that disturbs the driver
Data Source
AI summary
A head-up display includes a display unit displaying images in a display region defined on a vehicle windshield, a vehicle information acquisition unit acquiring vehicle information, a forward view information acquisition unit acquiring forward view information, a display object detection unit detecting a display object for which guidance information is required to be displayed in the display region, a display control unit, and a display form setting unit. The display control unit generates a guidance image indicating the guidance information of the detected display object and displays the generated guidance image over the display object in superimposed manner on the windshield. The display form setting unit calculates an annoyance value indicative of an annoyance level felt by a vehicle occupant when displaying the guidance image in superimposed manner, and sets a display form of the guidance image so that the calculated annoyance value is within a predetermined appropriate range.