In-Vehicle OTA Control Device Update Approval Segmentation
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Solution Overview
Problem
Users of in-vehicle devices experience frequent requests for software update approval, leading to user annoyance.
Innovation Solution
A control device and method that display an approval reception image only for the first type of software update, which temporarily stops the in-vehicle device's function during installation, allowing users to approve installation at a convenient time, while the second type of update, which does not stop the function, is installed automatically without user approval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user approval is requested for every software update phase, then update reliability is improved, but user annoyance increases due to frequent inquiries
Solution Approach 1:
The patent segments software updates into two categories: first updates that require user approval and temporary function stoppage, and second updates that automatically install without stopping functions. This segmentation allows the system to maintain reliability for critical updates while improving user convenience for less intrusive updates, resolving the contradiction between update reliability and user convenience.
Solution Approach 2:
The patent applies different quality characteristics to different types of updates. First updates (requiring approval and function stoppage) are treated with higher caution and user involvement, while second updates (automatic installation without function stoppage) are treated with higher automation. This local differentiation allows the system to optimize both reliability where needed and convenience where appropriate.
2Ease of operation
If automatic installation is implemented for all updates, then user convenience is improved, but user awareness of function stoppage is reduced
Solution Approach 1:
Instead of automatically installing all updates and then notifying users of function stoppage, the patent inverts the approach by requiring user approval first for updates that will stop functions. This ensures users are aware of the impending function stoppage before it occurs, maintaining information transparency while still providing automatic installation for updates that don't require function stoppage.
3Measurement precision
If frequent approval inquiries are made, then update control precision is improved, but user annoyance increases
Solution Approach 1:
The patent applies partial action by requesting user approval only for first updates (those requiring function stoppage) rather than for all updates. This selective approach maintains sufficient control precision for critical updates while reducing unnecessary inquiries for less critical updates, thereby improving user convenience without sacrificing essential update control.
Data Source
AI summary
The OTA master that controls the HMI that displays the information regarding the software update of the in-vehicle device mounted on the vehicle displays, on the HMI, a permission reception image indicating that the permission reception operation for executing the installation is performed by the user of the vehicle before the installation is started, solely in a case of the first update among two kinds of software updates including the first update accompanied by the temporary stop of the function of the in-vehicle device in executing the installation of the update software and the second update accompanied by the temporary stop of the function of the in-vehicle device in executing the installation of the update software.