Vehicle Display Layout Using Optical Flow and Gravity Cues
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Solution Overview
Problem
Conventional display technologies in vehicles fail to adequately reduce motion sickness by not providing clear visual cues for both the moving direction and gravity direction, leading to sensory confusion between visual and vestibular inputs.
Innovation Solution
A display device that simultaneously displays an optical flow image and a gravity or horizontal direction image, allowing occupants to visually grasp the vehicle's motion and orientation, with adjustable display positions and rates to minimize sensory conflict.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only an optical flow image is displayed, then the device complexity is reduced, but the motion sickness reduction effect is insufficient
Solution Approach 1:
The patent combines multiple visual elements (optical flow image, horizontal direction indicator, gravity direction indicator) into a single integrated display system. This merging of multiple information sources provides comprehensive visual cues that address sensory confusion more effectively than any single element alone, resolving the contradiction between display simplicity and motion sickness reduction effectiveness.
Solution Approach 2:
The display device is designed to serve multiple functions simultaneously: displaying optical flow information, indicating horizontal direction, indicating gravity direction, and reducing motion sickness. This multi-functionality allows a single display system to address various aspects of sensory confusion, improving motion sickness reduction without requiring multiple separate devices.
2Reliability
If multiple images are displayed simultaneously, then the motion sickness reduction effect is improved, but the device complexity increases
Solution Approach 1:
The display content is segmented into distinct functional components: optical flow information, horizontal direction indication, and gravity direction indication. Each segment serves a specific purpose in addressing sensory confusion. This segmentation allows the system to provide comprehensive motion sickness reduction while maintaining clear, organized visual information that is easier to process than undifferentiated complex displays.
Solution Approach 2:
The patent adds new dimensions to the display by incorporating horizontal direction and gravity direction indicators alongside the traditional optical flow image. This dimensional expansion provides additional visual cues in different spatial orientations, creating a more comprehensive reference system that helps occupants orient themselves and reduce sensory confusion without requiring a completely new display system.
3Measurement precision
If the display shows detailed movement information, then the visual cue accuracy is improved, but the occupant's ability to watch content images is reduced
Solution Approach 1:
Different regions of the display are assigned different functions with appropriate levels of detail. The optical flow image provides detailed movement information in specific areas, while other regions provide directional references. This local differentiation allows detailed visual cues to be provided where needed without overwhelming the entire display, maintaining content viewing comfort while improving visual cue accuracy in critical areas.
Solution Approach 2:
The system provides partial visual information about vehicle movement and orientation rather than complete detailed data. By displaying key directional indicators and optical flow patterns without showing all possible movement parameters, the system provides sufficient visual cues to reduce motion sickness while leaving adequate display space and visual simplicity for content viewing comfort.
Data Source
AI summary
A display device for a vehicle comprises a display fixed to a vehicle; and a display controller configured to control the display, wherein the display controller is configured to simultaneously display, on the display, a first image indicating an optical flow and a second image indicating a direction of gravity or a horizontal direction perpendicular to the direction of gravity.