Voice Interface Display Control for Command Category Guidance
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Solution Overview
Problem
Conventional agent devices select agent function units based on commands in utterances, leading to poor operability for users unfamiliar with appropriate commands.
Innovation Solution
A display control device and method that includes displaying an operating state image and category screen with grouped commands, changing screens based on voice recognition outcomes and errors, enhancing user interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If agent function units are selected based on commands in utterance content, then the system can automatically respond to user inputs, but operability deteriorates for users unfamiliar with appropriate commands
Solution Approach 1:
A display control device acts as an intermediary between the voice recognition system and the user. When voice recognition fails or is incomplete, the device displays a category screen showing grouped command categories, serving as a visual mediator that guides users who are unfamiliar with the required command format.
Solution Approach 2:
The system implements feedback by displaying the operating state image that shows the current processing status and the category screen that provides visual feedback on recognized content. This feedback loop helps users understand what the system has captured and what is expected, improving operability for command selection.
2Ease of operation
If the display shows detailed command information, then user guidance is improved, but device complexity increases
Solution Approach 1:
The display information is segmented into distinct functional components: an operating state image showing processing status and a category screen displaying grouped command categories. This segmentation allows the system to provide comprehensive guidance without overwhelming the user with undifferentiated information.
Solution Approach 2:
The display control device dynamically adjusts what information is shown based on the voice recognition outcome. When recognition succeeds, only the operating state image is displayed. When recognition fails or is incomplete, the category screen is automatically displayed to provide additional guidance, making the system adaptable rather than static.
3Loss of information
If the system handles voice recognition errors by showing error messages, then user understanding is improved, but productivity decreases due to additional interaction steps
Solution Approach 1:
The system converts the harmful effect of voice recognition errors into a beneficial opportunity for user guidance. Instead of merely displaying error messages that stop interaction, the system displays a category screen that shows grouped command categories, transforming the error state into a helpful moment that guides users toward correct input while maintaining the interaction flow.
Data Source
AI summary
A display control device includes a controller having a voice recognition unit and a display control unit. The voice recognition unit detects voice input from an occupant and recognizes the voice by voice processing of the detected voice. The display control unit causes a display to display a main screen including an operating state image indicating the operating state of a dialogue system, and a category screen including a category image in which commands are grouped. The controller causes the display to display the main screen before the voice recognition unit detects the voice, causes the display to display the category screen when the voice processing is not completed normally, and changes the display screen from the category screen to another screen when a category is selected in a state in which the category screen is displayed.