Vehicle Display Region Control for Stable Driver Eye Tracking
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Solution Overview
Problem
Existing display systems for vehicles can cause discomfort to drivers when the position of their eyes moves vertically, as the image displayed adjusts accordingly, leading to potential discomfort and processing delays.
Innovation Solution
A display controlling device that includes a position detecting unit to track the driver's head and eye position, a region adjusting unit to adjust the image's position based on these detections, and a display controlling unit to display the image in a way that prevents vertical adjustments of the image's position, ensuring it moves only in the crosswise and front/rear directions when the driver's head moves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the image position is adjusted to correspond to the vertical movement of the driver's eye, then the display follows the eye position accurately, but the driver feels uncomfortable due to unintended vertical image movement
Solution Approach 1:
The patent applies different adjustment rules to different spatial dimensions of the displayed image. Specifically, the image position is adjusted in the horizontal direction (left-right) based on eye position changes, but intentionally NOT adjusted in the vertical direction (up-down) when head position changes occur. This selective, dimension-specific approach resolves the contradiction by maintaining horizontal tracking accuracy while eliminating uncomfortable vertical movements.
2Speed
If the image position adjusts to every eye position change, then the display responds dynamically to driver movement, but processing time increases and system complexity rises
Solution Approach 1:
The patent extracts and isolates the vertical dimension adjustments from the overall image position adjustment process. By removing the vertical adjustment component while maintaining horizontal adjustments, the system reduces the computational burden and processing time required for image repositioning, thereby addressing the time loss issue while preserving essential responsiveness.
Solution Approach 2:
Instead of adjusting the image position to follow all eye movements (the conventional approach), the patent inverts the logic by deliberately preventing adjustment in the vertical direction while maintaining adjustment in the horizontal direction. This inverted approach simplifies processing and reduces computational time while still providing useful display functionality.
Data Source
AI summary
A display controlling device includes a position detecting unit for detecting a position of the head of a driver and a position of an eye of the driver; a region adjusting unit for adjusting the position of a region, to be displayed on a display, in an outside image, depending on the detection result by the position detecting unit; and a display controlling unit for displaying, on the display, a region corresponding to the region of the position adjusted by the region adjusting unit. When there is a change in the position of the head so as to move in both the vertical direction in the crosswise direction of the vehicle, the region adjusting unit prevents adjustment of the position of the region to a position corresponding to the change, in the vertical direction, of the position of the eye, and adjusts the position of the region to a position corresponding to a change in the position of the eye in the crosswise direction and/or the front/rear direction.