Vehicle Recording Control Device User Change Detection
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Solution Overview
Problem
Dashboard cameras used in shared vehicles may record and store data from previous users, compromising security by allowing unauthorized access to video data from other users.
Innovation Solution
A recording control apparatus and method that includes a capture-data acquisition unit, event detection unit, position-information acquisition unit, and user-change determination unit to detect and manage user changes by comparing current and pre-recorded position information, ensuring secure deletion of data when user changes occur.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dashboard camera constantly records and stores capture data to memory card, then event recording completeness is improved, but security against unauthorized access to previous users' data deteriorates
Solution Approach 1:
The system performs preliminary actions by detecting user changes before unauthorized access can occur. The user-change detection unit continuously monitors position information and detects when a user change occurs, triggering automatic deletion of capture data before it can be accessed by the new user. This preliminary detection and deletion mechanism ensures that even though data is constantly recorded, only the current user's data remains accessible.
Solution Approach 2:
The system applies the discarding principle by automatically deleting capture data when a user change is detected. The capture data is discarded (deleted) when no longer needed for the current user, and the storage space is recovered for future use. This ensures that previous users' data is permanently removed and cannot be accessed, while maintaining complete event recording for the current user's usage period.
2Object-affected harmful factors
If capture data is deleted when user change is detected, then security is improved, but data retention for event analysis deteriorates
Solution Approach 1:
The system dynamically adjusts data retention based on user context. Capture data is retained during the current user's possession of the vehicle but automatically deleted when a user change is detected. This dynamic retention policy ensures that event data is preserved for as long as needed (current user's usage) while preventing unauthorized access by subsequent users. The retention period is not fixed but adapts to actual usage patterns.
3Measurement precision
If position information is continuously monitored to detect user changes, then security control accuracy is improved, but energy consumption deteriorates
Solution Approach 1:
The system uses periodic action by checking position information at predetermined intervals rather than continuously monitoring. The user-change detection unit acquires position information periodically and compares it with previously stored position data to detect user changes. This periodic checking maintains sufficient detection accuracy while significantly reducing energy consumption compared to continuous monitoring, as the system only needs to check at intervals sufficient to detect when the vehicle is returned to its starting location.
Data Source
Figure 1
Figure 2A~2C
Figure 3
AI summary
According to the present invention, there is provided a recording apparatus (1) including: a capture-data acquisition unit (101) configured to acquire capture-data items obtained by a camera (10) configured to capture surroundings of a vehicle; an event detection unit (108) configured to detect an event for the vehicle; a user-change determination unit (110) configured to determine whether or not a change of users of the vehicle has occurred; and a recording control unit (104) configured to record the capture-data items acquired by the capture-data acquisition unit (101) into a recording unit (20), configured to store one of the capture-data items as an event-record data item into the recording unit (20) when the event detection unit (108) has detected the event, the one corresponding to the event, and configured to delete the capture-data items recorded in the recording unit (20) when the user-change determination unit (110) determines that the change of the users of the vehicle has occurred.