Vehicle Display Control for World-Fixed Head-Motion Compensation
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Solution Overview
Problem
Existing vehicle display systems fail to provide a world-fixed display of information for occupants, leading to relative movement between the vehicle and the occupant's head movement, which can cause discomfort and motion sickness.
Innovation Solution
A control device and method that adjusts the position and orientation of display information on a vehicle display unit in real-time to compensate for the relative movement between the vehicle and the occupant's head movement, using sensor data to predict and counteract vertical, lateral, and rotational movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display information is shown in a fixed position on the display unit, then the device complexity is low, but the display information moves relative to the occupant's head movement causing discomfort and motion sickness
Solution Approach 1:
The display information position is made dynamic by continuously adjusting it based on detected head movement and vehicle movement data. The control device modifies the display position in real-time to compensate for relative motion between the occupant and the display unit, transforming a static display system into an adaptive one that maintains world-fixed appearance.
Solution Approach 2:
The system implements feedback by detecting the occupant's head movement and vehicle movement, then using this information to adjust the display information position. The control device continuously monitors the relative movement and compensates by repositioning the display content, creating a closed-loop control system that maintains comfort.
2Stability of the object's composition
If the position of display information is adjusted in real-time to compensate for vehicle movement and head movement, then the display stability for the occupant is improved, but the computational requirements and processing time increase
Solution Approach 1:
The system performs preliminary calculations by determining the predicted position of display information based on current head movement and vehicle movement data. By pre-calculating the compensation needed and applying it proactively, the system reduces real-time processing delays and maintains stable display appearance without significant time loss.
3Measurement precision
If sensor data is used to predict and counteract movements, then the accuracy of compensation is improved, but the measurement and detection complexity increases
Solution Approach 1:
The control device utilizes existing sensors in the vehicle (such as accelerometers, gyroscopes, and cameras) for multiple purposes. These sensors originally designed for vehicle dynamics monitoring or driver assistance are repurposed to detect head movement and vehicle movement for display compensation, avoiding the need for dedicated specialized sensors and reducing overall system complexity.
Data Source
AI summary
A control device and a method for controlling a display unit arranged in a vehicle, such that the control device comprises a processor configured to receive first data representing an environment of a vehicle; determine a driving trajectory of the vehicle using the first data; receive second sensor data representing a head movement of an occupant of the vehicle; determine a time-dependent relative movement between the head movement of the occupant and a vehicle movement according to the driving trajectory using a speed of the vehicle; determine a time-dependent change in a position of display information to be displayed on a display unit disposed in the vehicle such that the change in the position of the display information compensates for all or part of the relative movement; and generate control instructions for controlling the display unit to display the display information in accordance with the time-dependent change in the position.