Vehicle HUD Direction Shift for Off-Screen Turn Guidance
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Solution Overview
Problem
Existing head-up display (HUD) systems fail to reliably display direction-change information within a display area, particularly when the information includes direction-change information, leading to potential safety risks due to driver distraction.
Innovation Solution
The HUD system includes a direction-information generator, a shift device, and a display system that determines whether direction-change information is outside the display area and shifts it into the display area if necessary, ensuring it is displayed as a virtual image within the visible range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direction-change information is displayed according to its original position on the road surface, then the information represents accurate spatial relationship, but the information may fall outside the display area and fail to be visible to the driver
Solution Approach 1:
The system performs preliminary determination to check whether direction-change information falls outside the display area before final display. When such information is detected, the system proactively shifts it into the display area in advance, ensuring visibility before the driver needs to act on the navigation instruction.
Solution Approach 2:
The system introduces an intermediate processing step that acts as a mediator between the original direction-change information position and the final display position. This intermediary mechanism determines whether shifting is needed and executes the position adjustment, ensuring information remains visible while maintaining spatial accuracy.
2Ease of operation
If the display area is kept fixed and limited, then the HUD system maintains simple structure and easy operation, but direction-change information may fall outside the visible range
Solution Approach 1:
The system introduces dynamic adjustment capability to the display area. Instead of keeping the display area fixed, the system can dynamically shift and expand the display area to include direction-change information that would otherwise fall outside the visible range, while maintaining the simplicity of the overall HUD operation.
Data Source
AI summary
A head-up display (HUD) including a direction-information generator, a shift device, and a display system. The direction-information generator generates direction information to be superimposed on a road surface ahead of a vehicle on which the HUD is mounted. The direction information represents a direction of travel to be followed by the vehicle. The shift device shifts at least some of the direction-change information into the display area when the direction information includes direction-change information to represent a change in the direction of travel and the direction-change information falls outside a display area. The display system displays the direction information within the display area as a virtual image.