In-Vehicle Event Recording Using Speech-State Adaptive Video Windows
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing drive recorders may fail to appropriately record events when a voice command is not spoken in a calm state, leading to missed recordings of sudden events or events not immediately recognized.
Innovation Solution
An on-vehicle recording control apparatus that includes a camera, microphone, and control device to capture and process video data, detect speech states of voice commands, and adjust the period of event data recording based on the speech state, duration, recognition rate, volume, or multiple speakers to ensure accurate event capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed period is used for event data extraction, then the system is simple to operate, but sudden events or unrecognized events may be missed
Solution Approach 1:
The patent applies dynamics by making the event data extraction period variable rather than fixed. The recording period is dynamically adjusted based on the speech state detection results, allowing the system to adapt to different situations (calm vs. urgent) and improve event recording accuracy without requiring complex manual configuration
Solution Approach 2:
The system performs self-service by automatically detecting the speech state and adjusting the recording period without user intervention. The detection unit and recording controller work together to autonomously determine the appropriate extraction period based on whether the voice command was spoken in a calm or urgent state
2Reliability
If the recording period is extended to capture all possible events, then event capture reliability improves, but data storage and processing complexity increases
Solution Approach 1:
The patent applies local quality by differentiating the recording period based on the specific situation (speech state). Instead of using a uniformly extended recording period for all cases, the system applies different extraction periods locally - a longer period when urgency is detected and a standard period when the situation is calm, thus capturing necessary events while avoiding excessive data storage
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An on-vehicle recording control apparatus includes: a captured data acquisition unit configured to acquire video data captured by a camera that captures an image of surroundings of a vehicle; an operation controller configured to receive voice operation based on a voice command instructing event recording; a detection unit configured to detect a speech state of the voice command of the voice operation received by the operation controller; and a recording controller configured to: record the video data acquired by the captured data acquisition unit; generate event data while changing, based on the speech state of the voice command detected by the detection unit when the operation controller receives the voice operation for event recording, a period of the event data that is extracted from the video data; and store the generated event data.