Vehicle Display Prompting for Reliable Steering Takeover
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Solution Overview
Problem
Existing vehicle display systems annoy occupants with frequent requests to grip the steering wheel, affecting their ability to react appropriately and ensuring safe driving.
Innovation Solution
A vehicle display control device that adjusts the prominence of the inducement image based on the need for the occupant to grip the steering wheel, displaying it more prominently before switching from autonomous to manual driving mode or before a vehicle event, and less prominently when the vehicle is already in autonomous mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the inducement image is displayed prominently to ensure the occupant grips the steering wheel, then the reliability of manual takeover is improved, but the occupant becomes annoyed and their reaction ability deteriorates
Solution Approach 1:
The patent applies local quality by varying the display prominence of the inducement image based on the specific situation. When manual takeover is required, the image is displayed prominently in the center of the meter display. When manual takeover is not required, the image is displayed less prominently at the lower left or right positions. This localized adjustment of display quality resolves the contradiction by making the image conspicuous only when necessary.
Solution Approach 2:
The patent implements dynamics by making the display state of the inducement image changeable based on operational conditions. The display control unit dynamically adjusts between prominent central display and less prominent peripheral display according to whether manual takeover is required. This dynamic adaptation allows the system to maintain reliability when needed while reducing annoyance during autonomous operation.
2Reliability
If the inducement image is displayed frequently to maintain occupant awareness, then the reliability of driving mode switching is improved, but the occupant's ability to appropriately react deteriorates due to annoyance
Solution Approach 1:
The patent uses local quality to differentiate display prominence based on situational context. The inducement image is displayed prominently only in situations where manual takeover is required, while being displayed less prominently when autonomous driving continues. This selective prominence maintenance ensures reliability without causing continuous annoyance that would impair reaction ability.
Solution Approach 2:
The patent converts the potential harm of frequent display into benefit by strategically timing the prominent display only when manual takeover is required. The frequent but subdued displays during autonomous operation serve as gentle reminders without causing annoyance, while the prominent displays at critical moments ensure reliable takeover. This transforms what could be harmful frequent interruption into a beneficial adaptive notification system.
3Loss of information
If the inducement image is displayed prominently to convey urgency, then the information transmission effectiveness is improved, but the occupant experience deteriorates due to increased annoyance
Solution Approach 1:
The patent applies local quality by positioning the inducement image differently based on urgency. When urgent manual takeover is needed, the image is displayed prominently in the center. When less urgent, the image is displayed at the lower left or right positions with reduced prominence. This spatial and visual quality differentiation ensures effective information transmission only when necessary while minimizing annoyance during less critical periods.
Data Source
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AI summary
A vehicle display control device (10), includes a memory (32); and a processor (30) coupled to the memory. The processor (30) is configured to cause a display unit (24, 26) provided in a vehicle cabin to display an inducement image requesting that an occupant grip a steering wheel in a case in which it is necessary for the occupant to grip the steering wheel, and cause the display unit (24, 26) to display the inducement image more prominently in a case of requesting that the occupant grip the steering wheel before the vehicle switches from an autonomous driving mode to a manual driving mode as the vehicle is continuing to drive autonomously, than in a case of requesting that the occupant continue to grip the steering wheel as the vehicle is continuing to drive autonomously.