Head-Up Display Arrow Height Control for Clear Turn Guidance
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Solution Overview
Problem
Existing vehicle display systems fail to clearly and intuitively convey target points such as intersections and guidance directions, and obstruct the viewer's field of view by positioning virtual objects at the center of the display, causing annoyance.
Innovation Solution
A display control device that adjusts the height of virtual objects on different routes leading to a target point, varying their position relative to the viewer's perspective to clearly convey guidance directions and avoid obstructing the field of view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the arrow mark is positioned at the center of the angle of view to clearly convey guidance direction, then the guidance visibility is improved, but the front field of view is blocked causing annoyance
Solution Approach 1:
The patent applies dimensionality change by moving the virtual object from the center of the angle of view to the upper side of the angle of view in the vertical dimension. This spatial repositioning allows the guidance information to remain visible while no longer blocking the driver's forward view, thus resolving the contradiction between guidance visibility and field of view obstruction
Solution Approach 2:
The patent applies local quality by differentiating the display position based on the vehicle's route phase. When approaching the target point, the virtual object is displayed on the upper side of the angle of view to avoid obstruction, while maintaining visibility. This localized adjustment of display position according to specific operational conditions optimizes both guidance effectiveness and driver comfort
2Device complexity
If the arrow mark height remains constant to simplify display control, then the device complexity is reduced, but the target point and guidance direction cannot be clearly conveyed
Solution Approach 1:
The patent applies dynamics by making the virtual object's display position dynamic rather than static. The vertical position of the arrow mark changes based on the vehicle's distance to the target point and route phase, allowing the system to convey more information (target point approach, guidance direction) without increasing overall device complexity. The control unit automatically adjusts position based on detected parameters
Data Source
AI summary
A display control device including a control unit that performs display control in a case where a virtual object indicating a guidance direction at a target point is displayed in advance so as to move along a road surface, the virtual object is positioned at the target point, and the virtual object VOB is visually recognized by a viewer 4 aboard a vehicle as if the virtual object is present at a predetermined real space position in front of the vehicle, wherein the control unit performs control of displaying the virtual object such that a height of the virtual object on a first route when moving to the target point as viewed from the viewer is different from a height of the virtual object on a second route when approaching from the target point as viewed from the viewer.