AR Maneuver Markings for Clear Long-Range Vehicle Navigation
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Solution Overview
Problem
Current head-up display technologies for vehicles are limited in presenting navigation information in a way that is easily readable and interpretable, especially at greater distances, as markings can be difficult to see due to small pixel formation and are not effectively implemented in current display sizes, which can increase cognitive demands on drivers in complex navigation scenarios.
Innovation Solution
An augmented reality display device for vehicles that generates target maneuver markings, which are projected vertically onto the road where the maneuver is to be performed, allowing for clear direction indication, with features such as increasing size as the vehicle approaches, superimposition on objects, and animation to enhance visibility and clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If navigation markings are projected onto the road surface using conventional head-up display, then the driver can see navigation information, but the markings become difficult to see at greater distances due to small pixel formation and limited display size
Solution Approach 1:
The patent transitions from projecting navigation markings on a 2D head-up display surface to projecting them directly onto the 3D road surface in the driver's field of view. This dimensional change allows the markings to be displayed at their full scale on the road, eliminating the pixelation and size limitations of conventional HUDs while maintaining high visibility at all distances.
2Ease of operation
If conventional head-up display is used for navigation, then the display can be implemented with current technology, but the driver must interpret and apply the information to the actual situation which increases cognitive demands
Solution Approach 1:
The system projects navigation markings directly onto the road surface at the location where the maneuver should be executed, preparing the driver in advance with spatially accurate guidance. The markings are displayed at the exact position and orientation needed, so the driver can immediately execute the maneuver without cognitive interpretation, reducing mental workload and reaction time.
Solution Approach 2:
The patent uses color and brightness variations in the projected markings to convey different navigation states and priorities. By encoding information through visual properties like color intensity and patterns directly on the road surface, the system provides intuitive, easily distinguishable navigation cues that reduce cognitive processing requirements.
3Loss of time
If navigation information is displayed below the driver's primary field of vision, then the driver looks away from the street for less time, but the information must be interpreted and applied to the actual situation
Solution Approach 1:
The patent moves navigation information from a 2D display below the driver's view into the 3D road environment itself. By projecting markings directly onto the road surface in the driver's forward field of view, the system eliminates the need to shift gaze to a separate display while simultaneously providing spatially contextualized information that requires minimal interpretation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides reliable and early visibility of upcoming maneuvers, reducing cognitive load on drivers by projecting clear and dynamic navigation information directly onto the road, ensuring the driver can focus on the actual scenario without needing to interpret small or distant markings.
Implementation Method 1
Light beams from a display built into a dashboard are deflected via numerous mirrors and lenses, and reflected via a projection surface to the eyes of the driver
Data Source
AI summary
Technologies and techniques for controlling a display of an augmented reality display device for a motor vehicle. A maneuver scheduler determines a target maneuver of the motor vehicle. An execution location of the target maneuver is determined. A graphics generator generates a target maneuver marking for a display by the augmented reality display device on the basis of the information. The target maneuver marking is outputted for display by the augmented reality display device. The target maneuver marking is displayed in such a way that the target maneuver marking is displayed in a stationary manner in the region of the execution location of the target maneuver perpendicularly on a lane to be travelled by the motor vehicle.