Head-Mounted Display Voice Command Control for Hands-Free Operation
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Solution Overview
Problem
Head-mounted display (HMD) devices used as language translators or conversation support devices face operability issues when the user's hands are occupied, as they require manual startup or mode changes, which is not addressed in existing technologies.
Innovation Solution
The HMD device receives and converts speech into character strings, using specific speech commands to start or shut down programs or operation modes, allowing hands-free operation by extracting specific speech patterns associated with startup or shutdown actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation is required to start up or change operation modes, then the device can be controlled precisely, but the ease of operation deteriorates when hands are occupied
Solution Approach 1:
The patent replaces manual mechanical operations with voice-based acoustic control. The speech recognition unit detects voice commands, and the control unit interprets these acoustic signals to perform system operations, eliminating the need for manual button presses or touch interactions when hands are occupied.
Solution Approach 2:
The system enables self-service operation by automatically detecting and executing user intentions through speech recognition. The HMD device autonomously starts up programs or changes operation modes based on voice commands without requiring manual intervention, making the device serve itself in response to natural user expression.
2Ease of operation
If speech recognition is implemented for hands-free operation, then the ease of operation improves, but the device complexity increases due to additional processing units
Solution Approach 1:
The control unit serves multiple functions: it manages overall system operation, processes speech recognition results, and executes program control based on detected voice commands. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in device complexity while enabling speech-based hands-free operation.
Data Source
AI summary
Operability of head-mounted display systems is enhanced by incorporating the following: a microphone which receives an utterance input by a person and outputs voice information; a character string generation unit which generates an uttered character string by converting the voice information into a character string; a specific utterance information storage unit which stores specific utterance information that associates at least one program to be started or stopped and/or at least one operating mode to be started or stopped, with specific utterances for starting or stopping each of the programs and/or operating modes; a specific utterance extraction unit which extracts a specific utterance included in the uttered character string with reference to the specific utterance information, and generates an extracted specific utterance signal indicating the extraction result; and a control unit which starts or stops a program or an operating mode with reference to the extracted specific utterance signal.