Head-Up Display Shift Logic for In-View Curve Guidance
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Solution Overview
Problem
Existing head-up display systems fail to reliably display direction-change information within the display area, particularly when the information includes curve information, leading to potential safety hazards due to drivers needing to look away from the road to check navigation systems.
Innovation Solution
The system includes a direction-information generator that shifts direction-change information, such as curve information, into the display area when it falls outside the display area, using a shift device and display system to ensure it is visible within the driver's view.
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 accurately represents the actual road layout, but the information may fall outside the display area and become invisible to the driver
Solution Approach 1:
The patent applies dimensionality change by shifting direction-change information from its original road-surface-based position to a new position within the display area. The shift device moves curve information that would otherwise fall outside the visible display area into the visible range, effectively changing the spatial dimension of information presentation while maintaining its navigational meaning
Solution Approach 2:
The system performs preliminary action by pre-shifting direction-change information into the display area before the driver needs to view it. The shift device proactively adjusts the position of curve information based on predicted display requirements, ensuring the information is already in view when the driver looks at the HUD, rather than requiring reactive adjustments
2Area of stationary object
If direction-change information is shifted into the display area, then the information becomes visible within the driver's view, but the information may no longer accurately represent its original position on the road surface
Solution Approach 1:
The patent applies local quality by making the position adjustment specific only to direction-change information that falls outside the display area, while leaving other direction information unchanged. The shift device selectively shifts only the necessary curve information into the visible area, maintaining accurate representation for information that is already within bounds
3Device complexity
If the display area is kept fixed and limited, then the system maintains simple optics and easy driver adaptation, but direction-change information may fall outside the visible area
Solution Approach 1:
The patent applies dynamics by making the display of direction-change information adaptive rather than static. The shift device dynamically adjusts the position of curve information based on real-time conditions, shifting information into the fixed display area when needed while maintaining the simplicity of the fixed optical system itself
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.