Vehicle Recording Control Device Dual Standby Period Storage Optimization
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Solution Overview
Problem
Existing recording control systems for vehicles burden memory storage with unnecessary video data retention, as they save video for a predetermined period before an incident, potentially including irrelevant events, leading to inefficient use of storage capacity.
Innovation Solution
The system introduces a dual standby period approach, where marking events are recorded without immediate saving, and video data is saved only when a trigger event occurs within a defined period after the marking event, using a ring buffer scheme to manage storage efficiently, allowing for ex-post relevance determination of minor events to potential incidents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If video data is saved for a predetermined period before an incident, then the likelihood of capturing relevant event data is improved, but storage capacity is wasted by retaining irrelevant events
Solution Approach 1:
The system performs preliminary recording of video data during a standby period before an actual incident occurs. This preliminary action ensures that data is already captured and ready when the incident happens, improving the reliability of event data capture without requiring continuous long-term storage.
Solution Approach 2:
The system dynamically adjusts the recording strategy by switching between standby mode (recording minimal data) and recording mode (recording comprehensive data) based on detected events. This dynamic approach allows the system to capture relevant events while minimizing unnecessary storage consumption during normal operation.
2Loss of information
If video data is saved purposelessly for long period of time, then all potential incident data is captured, but memory card capacity is depleted wastefully
Solution Approach 1:
The system extracts and saves only the necessary video data segments related to actual incidents rather than continuously saving all video data. By identifying and extracting only relevant portions (those within a predetermined period before and after detected events), the system preserves incident data while avoiding wasteful consumption of storage capacity.
Solution Approach 2:
The system discards unnecessary video data that does not relate to detected events, thereby freeing up storage capacity. Meanwhile, it recovers and preserves only the essential data segments that are likely to contain incident information, optimizing the balance between data preservation and storage efficiency.
3Ease of operation
If a single standby period is used for recording, then the system is simple to operate, but it cannot distinguish between minor events and potential incidents
Solution Approach 1:
The system segments the standby period into multiple sub-periods (first standby period and second standby period) with different recording strategies. This segmentation allows the system to apply different levels of monitoring and recording to different time intervals, improving the ability to distinguish between minor events and potential incidents while maintaining operational simplicity.
Solution Approach 2:
The system applies different recording qualities and strategies to different time periods. During the first standby period, minimal data is recorded, while during the second standby period (when events are detected), comprehensive data is recorded. This local differentiation of recording quality enables reliable event relevance determination without complicating overall system operation.
Data Source
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AI summary
In a recording control apparatus, an event detection unit 18 detects that an event occurs, when a save-triggering event, which is defined to trigger saving of the video data, occurs or when an event not triggering saving, which is different from the save-triggering event and for which it is defined that a point of time of detection thereof should be recorded, occurs. A recording control unit 20 records, when the event not triggering saving is detected, the point of time of detection of thereof. When the save-triggering event is detected within a standby period defined in association with the event not triggering saving after detection of the event not triggering saving, it is defined that video data including a video at the point of time of detection of the event not triggering saving and a video at a point of time of detection of the save-triggering event should be saved.