Head-Up Display Position Correction Using Vehicle State Data
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional head-up display systems fail to provide adequate display when positional information related to display items is temporarily unavailable, leading to incomplete or inaccurate information for drivers.
Innovation Solution
A head-up display device and method that includes a display item information acquisition unit, travel information acquisition unit, and state information acquisition unit, which work together with a display controller to specify display positions based on acquired data, even when position information is missing, by using correction positions estimated from state information such as vehicle speed and steering angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the system uses travel information for specifying display position, then display accuracy is improved, but when positional information is temporarily unavailable, display reliability deteriorates
Solution Approach 1:
The system performs preliminary actions by acquiring state information (vehicle speed, steering angle, acceleration) that can be used to predict and correct display position even when travel information is temporarily unavailable. This prepares compensatory data in advance to maintain display continuity.
Solution Approach 2:
State information acts as an intermediary between the unavailable travel information and the display position specification. The display control unit uses state information as a mediator to estimate and correct display positions when direct travel information is not available, bridging the information gap.
2Reliability
If the system acquires multiple types of information (display item information, travel information, state information), then display robustness is improved, but device complexity increases
Solution Approach 1:
The display control unit performs multiple functions: it specifies display positions using travel information when available, and switches to using state information for correction when travel information is unavailable. This multi-functionality reduces the need for separate systems for different operating conditions.
Solution Approach 2:
The system changes the parameters used for display position specification based on data availability. When travel information is available, it uses position coordinates; when unavailable, it switches to using state information parameters (vehicle speed, steering angle, acceleration) to calculate corrected positions.
Data Source
AI summary
A HUD device that allows an occupant of a moving body to view a virtual image by projecting an image on a display medium includes a display item information acquisition unit that acquires display item information showing position and display content of display item, a travel information acquisition unit that acquires travel information indicating position of the moving body at predetermined time intervals, and a state information acquisition unit that acquires state information indicating state of the moving body, and specifies at display timings display position on the basis of position indicated by display item information and position indicated by travel information acquired last. The HUD device includes a display controller that specifies display position on the basis of position indicated by display item information and correction position obtained by correcting position indicated by travel information acquired last in accordance with state indicated by state information and displays an image showing display content indicated by display item information at the specified display position on the display medium when a predetermined condition is satisfied.