Vehicular Recording Control with Sightline-Verified Voice Commands
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Solution Overview
Problem
Existing vehicular recording devices face challenges in accurately and safely performing event recording using voice commands, as drivers may struggle to provide the correct command instantly or may utter erroneous commands, leading to missed timing for event recording.
Innovation Solution
A vehicular recording control device equipped with imaging data acquisition, sightline determination, voice recognition, and output control units that recognize voice commands and ensure the driver's attention is directed to the recording device, facilitating appropriate event recording by outputting voice commands when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If event recording is performed using voice command only, then the operation complexity is reduced and ease of operation is improved, but the reliability of event recording decreases due to missed timing or erroneous commands
Solution Approach 1:
The system provides feedback by displaying the recognized voice command on the display unit and detecting whether the occupant has correctly understood the command through sightline detection. This feedback mechanism allows the occupant to confirm the recorded event information, thereby improving reliability while maintaining ease of operation through voice input
Solution Approach 2:
The display unit acts as an intermediary between the voice recognition system and the final recording action. The system displays the recognized command and waits for implicit confirmation through sightline detection, serving as a mediator that ensures accurate event capture without requiring complex manual operations
2Loss of time
If the system waits for instant voice command recognition, then the response time is reduced, but the measurement precision of the voice command decreases due to hasty or erroneous utterances
Solution Approach 1:
The system performs preliminary action by displaying the recognized voice command on the display unit before finalizing the event recording. This allows the occupant to quickly see what was recognized and confirm it through sightline detection, reducing the need for re-recognition and improving both response time and precision
Solution Approach 2:
The system provides immediate feedback by displaying the recognized command and detecting sightline direction to confirm correct recognition. This feedback loop enables quick correction of erroneous commands while maintaining fast response time for legitimate events
3Reliability
If the system adds sightline detection and display output functions, then the reliability of voice command recognition is improved, but the device complexity increases
Solution Approach 1:
The display unit serves multiple functions: it displays the recognized voice command, provides visual feedback to the occupant, and works in conjunction with the sightline detection system. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while improving reliability
Data Source
AI summary
A vehicular recording control device includes: an imaging data acquiring unit configured to acquire first imaging data from a first camera imaging surroundings of a host vehicle and second imaging data from a second camera imaging a cabin of the vehicle; a sightline determining unit configured to determine the direction of a sightline of an occupant of the vehicle from the second imaging data; a voice recognizing unit configured to recognize a voice command for instructing event recording; an output control unit configured to output information indicating the voice command to the occupant when the sightline determining unit determines that the sightline of the occupant is directed to a display unit; and a recording control unit configured to store the first imaging data as event data when the voice recognizing unit recognizes the voice command.