AR Head-Up Navigation Display for Lane Change Guidance
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Solution Overview
Problem
Current navigation system displays in vehicles require high cognitive effort as users must constantly compare graphical representations with real-world traffic situations, and head-up displays struggle to provide a wide field of view, especially during lane changes, due to limited installation space and increased cognitive load.
Innovation Solution
A method for controlling a display device that uses augmented reality with a head-up display to provide navigation instructions by positioning a reference line within the user's field of view through the vehicle window, allowing lane boundaries to be displayed at a lateral distance from the actual lane boundary, reducing the need for a wide field of view and minimizing cognitive load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a head-up display is used to show navigation instructions, then the user can see the information in their field of vision, but the field of view must be very wide to realistically depict lane markings, which is problematic due to limited installation space
Solution Approach 1:
The patent creates a two-dimensional reference line that copies the essential information of the three-dimensional lane boundary. Instead of attempting to display the full width of the lane boundary in the limited head-up display field of view, the system projects a simplified reference line that represents the lane boundary's position and orientation, enabling navigation instructions to be displayed with reduced field of view requirements
Solution Approach 2:
The patent transforms the three-dimensional lane boundary into a two-dimensional reference line representation on the head-up display. This dimensional reduction allows the navigation system to convey lane boundary information effectively within the constrained field of view of the head-up display, eliminating the need for a very wide field of view while maintaining accurate spatial representation
2Area of stationary object
If a large head-up display is installed to provide a wide field of view, then lane markings can be realistically depicted, but the required space is not available in many vehicles
Solution Approach 1:
The patent creates a two-dimensional reference line that copies the essential information of the three-dimensional lane boundary. Instead of attempting to display the full width of the lane boundary in the limited head-up display field of view, the system projects a simplified reference line that represents the lane boundary's position and orientation, enabling navigation instructions to be displayed with reduced field of view requirements
Solution Approach 2:
The patent transforms the three-dimensional lane boundary into a two-dimensional reference line representation on the head-up display. This dimensional reduction allows the navigation system to convey lane boundary information effectively within the constrained field of view of the head-up display, eliminating the need for a very wide field of view while maintaining accurate spatial representation
3Measurement precision
If navigation information is displayed in an instrument cluster or central vehicle screen, then high-resolution display and large display area are available, but the user must look away from the surroundings, increasing cognitive effort
Solution Approach 1:
The patent merges the navigation information display with the driver's existing field of view through the windshield. By projecting the reference line and navigation instructions onto the windshield or head-up display, the system combines the navigational guidance function with the driver's natural forward viewing direction, eliminating the need to shift attention to separate displays and thereby reducing cognitive effort
Solution Approach 2:
The patent introduces the head-up display or windshield as an intermediary medium that delivers navigation information directly into the driver's field of view. This intermediary allows high-resolution navigation display without requiring the driver to redirect their gaze, as the information is presented through the existing optical path to the road
Data Source
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AI summary
The invention relates to a method for controlling a display device (101) of a navigation system (100) of a vehicle (F), in particular during a lane change by the vehicle (F), the method comprising: - detecting a lane change request, - determining a lane boundary (200) for the lane change request, - providing a reference line (201) for the lane boundary (200) in a field of view (10) of the display device (101), - providing a lane change instruction (202) using the reference line (201) on the display device (101), wherein the reference line (201) is arranged in a field of view (10) of the display device (101) such that the reference line (201) is positioned in a field of view (20) through a vehicle window (S) of the vehicle (F) at a specific lateral distance (A) to the lane boundary (200).