Vehicle Display Frame Rate Control by Occupant Visual Field
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Solution Overview
Problem
In vehicle cockpit systems with multiple displays, the frame rates of different image contents displayed on separate displays can vary, leading to discomfort for occupants due to differences in motion and processing loads, especially when high-processing-load content is displayed.
Innovation Solution
A vehicle display system that includes a visual field detecting unit to determine the occupant's visual field range and adjusts processing loads for image contents outside this range to maintain a minimum frame rate within the visual field, prioritizing resource allocation to ensure comfortable viewing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple image contents are displayed on separate displays with different processing loads, then the display system can provide diverse information, but the frame rates vary causing occupant discomfort
Solution Approach 1:
The system applies different quality levels to different display contents based on their importance and the occupant's visual field. Critical contents within the visual field receive high frame rates (60fps), while non-critical contents outside the visual field receive lower frame rates (10fps or less), resolving the contradiction between diverse content display and frame rate consistency
Solution Approach 2:
The display system dynamically adjusts frame rates based on real-time detection of the occupant's visual field position. When the steering wheel is turned, the system identifies the new visual field range and adjusts frame rates accordingly, making the system adaptive rather than static
2Stability of the object's composition
If high processing load is allocated to maintain frame rate for critical image contents, then viewing comfort is improved, but other processes suffer from reduced processing capacity
Solution Approach 1:
The system applies excessive processing resources (60fps) only to critical image contents within the visual field, while using minimal resources (10fps or less) for non-critical contents outside the visual field. This partial application of high processing load maintains frame rate stability for important content without unnecessarily consuming resources
3Productivity
If frame rate is reduced for image contents outside visual field range, then processing load is decreased, but display quality may deteriorate
Solution Approach 1:
The system applies different quality standards to different spatial regions. Image contents within the detected visual field range maintain high frame rates (60fps) for excellent quality, while contents outside the visual field use lower frame rates (10fps or less), accepting reduced quality where it is not critical to the occupant's experience
Data Source
AI summary
A vehicle display system, by executing a computer-readable program, being configured to: display multiple image contents in separate display areas of a display device arranged in a vehicle; detect a visual field range of an occupant of the vehicle; determine whether a frame rate of a certain image content displayed in the visual field range satisfies a lowest reference, the certain image content being one of the multiple image contents; and in response to determining that the frame rate of the certain image content does not satisfy the lowest reference, reduce a processing load of a different process while maintaining a display process of the certain image content in the visual field range of the occupant.