Head-Up Display Lane Change Cues for Driver Control-State Awareness
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Solution Overview
Problem
Current display control systems for automatic driving, such as lane changes, do not effectively inform drivers of the processes being performed by the control system, limiting their ability to perceive the control state.
Innovation Solution
A display control method and device that utilize a head-up display and meter display to show a first and second information image, including icons and character strings, to visually inform the driver of the control system's processes and intentions during automatic lane changes, using a controller with image generation and display control units to update the display based on the control system's actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a head-up display is used to show lane change information, then driver awareness is improved, but the complexity of the display system increases
Solution Approach 1:
The patent combines the head-up display and meter display into a unified display system that shows complementary information. The head-up display shows graphical lane change information while the meter display shows text-based control process status, creating a merged system that improves driver awareness without overwhelming complexity through standardized integration protocols.
Solution Approach 2:
The display information is segmented into two distinct parts: visual graphical information displayed on the head-up display showing lane change trajectory and target lane, and textual status information displayed on the meter display showing control process stage. This segmentation allows each display component to focus on specific information types, reducing overall system complexity while maintaining comprehensive driver awareness.
2Loss of information
If multiple display components are used to show control process information, then driver understanding is improved, but the device complexity increases
Solution Approach 1:
The display control device is designed with multi-functionality to manage multiple display components through a unified control architecture. The controller can selectively activate and coordinate the head-up display, meter display, or both simultaneously based on the control process stage, allowing a single device to perform multiple display functions without proportionally increasing complexity.
3Loss of information
If detailed control process information is displayed, then driver perception of control state is improved, but the information processing complexity increases
Solution Approach 1:
The display system applies local quality by showing different levels of information detail in different display locations. The head-up display provides simplified graphical representations of lane change trajectory and target lane for quick visual processing, while the meter display provides detailed text-based control process stage information. This local differentiation optimizes information processing by matching display complexity to the specific informational needs of each display location.
Data Source
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AI summary
In a display control method, if a control system proposes an automatic lane change to a driver of a host-vehicle, an arrow icon (41e) for guiding an automatic lane change is displayed on a head-up display, and a display method for the arrow icon (41e) is switched depending on a plurality of processes in the control performed by the control system.