On-vehicle Recording Control Apparatus for External Voice Capture
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Solution Overview
Problem
Existing vehicle recording systems struggle to accurately capture and record voice data outside the vehicle cabin, especially during events like collisions, due to difficulties in appropriately recording external voices and handling inappropriate responses from passengers of other vehicles.
Innovation Solution
An on-vehicle recording control apparatus that includes a video data acquiring unit, a voice data acquiring unit for outside-vehicle-cabin voice collection, an event detecting unit, a stop detecting unit, and a person detecting unit, which stores first and second event recording data based on video and voice data when an event occurs and the vehicle stops, allowing for objective recording of external voices and responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dashboard camera is installed inside a vehicle cabin to record video and voice data, then video recording capability is improved, but the ability to appropriately record voice outside the vehicle cabin deteriorates
Solution Approach 1:
The patent divides the voice collection system into separate components: an inside-vehicle-cabin voice collecting unit and an outside-vehicle-cabin voice collecting unit. This segmentation allows each unit to specialize in capturing voice data from its specific location, with the outside unit positioned to collect external voices while the inside unit captures internal conversations, thereby resolving the limitation of a single dashboard camera positioned inside the vehicle cabin
Solution Approach 2:
The patent introduces an outside-vehicle-cabin voice collecting unit as an intermediary device positioned external to the vehicle cabin. This intermediary unit collects voice data from outside the vehicle and transmits it to the recording control apparatus, enabling the system to capture external voices that would otherwise be inaccessible to an internally positioned dashboard camera
2Speed
If only video data is recorded at the time of event occurrence, then recording speed is improved, but the ability to capture subsequent responses and explanations deteriorates
Solution Approach 1:
The patent performs preliminary actions by continuously collecting both video data and voice data from multiple sources (inside and outside vehicle cabins) before the event occurs. The system pre-positions the outside-vehicle-cabin voice collecting unit to capture subsequent responses and explanations, ensuring that when the event happens, all relevant audio and visual data is already being collected and can be correlated with the event timing
Solution Approach 2:
The patent maintains continuous collection of video and voice data from multiple sources throughout the relevant time period, rather than activating recording only at the moment of the event. The recording control apparatus continuously monitors for events while simultaneously collecting audio and video data, ensuring uninterrupted capture of the complete sequence including pre-event context, the event itself, and post-event responses
3Reliability
If the system records voice data continuously, then the completeness of event recording is improved, but the amount of data to be processed and stored increases
Solution Approach 1:
The patent implements dynamic control of the recording process based on real-time event detection. The recording control apparatus monitors for event occurrences and adjusts the recording state accordingly - continuously collecting data when normal conditions exist, but activating comprehensive multi-source recording only when events are detected. This dynamic approach ensures complete event recording while minimizing overall data volume by avoiding continuous recording during non-event periods
Solution Approach 2:
The patent employs feedback mechanisms where the event detecting unit continuously monitors conditions and provides feedback to the recording control apparatus. When an event is detected, the system receives feedback and activates comprehensive recording of both video and voice data from multiple sources. This feedback-driven approach ensures that extensive data collection occurs only when necessary, balancing completeness with data volume management
Data Source
AI summary
An on-vehicle recording control apparatus includes a video data acquiring unit to acquire video data of surroundings of a vehicle; a voice data acquiring unit to acquire outside-vehicle-cabin voice data from an outside-vehicle-cabin voice collecting unit; an event detecting unit to detect an event for the vehicle; a stop detecting unit to detect a stop of the vehicle; a person detecting unit to detect a person in a vicinity of the vehicle from the video data; and a recording control unit to store, when the event is detected, first event recording data based on the video data and to store, when the person is detected after the stop of the vehicle is detected within a predetermined time period after the event is detected, second event recording data based on the video data and the outside-vehicle-cabin voice data until a predetermine time period has elapsed after the person is detected.