Voice-Controlled Display Power Modes With Sequential Command Recognition
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Solution Overview
Problem
Existing voice-controlled electronic devices often malfunction due to erroneous voice recognition, leading to unnecessary power consumption and user inconvenience, particularly in display devices like TVs.
Innovation Solution
A display device with an audio acquisition module and controller that recognizes sequential primary and secondary commands to control power modes, minimizing malfunctions and power consumption by switching between suspend, active-standby, and active modes, and providing notifications through light and audio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If voice recognition is used to control power remotely, then user convenience is improved, but malfunction due to erroneous recognition increases
Solution Approach 1:
The voice command recognition is divided into two separate stages: primary command recognition (wake word detection) and secondary command recognition (actual power control command). This segmentation allows the system to first activate only when a specific wake word is detected, then process the actual command, reducing erroneous activations while maintaining remote control convenience
Solution Approach 2:
The patent introduces an intermediary processing stage between wake word detection and command execution. The controller first detects the wake word, activates the device to an active-standby mode, then processes the secondary command before executing power control. This intermediary stage filters out erroneous recognitions while preserving legitimate commands
2Speed
If the display turns on due to erroneous voice recognition, then power control responsiveness is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts power modes based on recognition stage: suspend mode during wake word detection, active-standby mode during secondary command processing, and active mode only when command is confirmed. This dynamic adaptation ensures fast responsiveness when needed while minimizing power consumption during idle or erroneous states
Solution Approach 2:
The patent changes the power state parameter based on recognition progress. The controller monitors recognition status and transitions between power modes (suspend, active-standby, active) accordingly, ensuring the display only turns on when both primary and secondary commands are successfully recognized, thus avoiding unnecessary power consumption
3Reliability
If sequential command recognition is implemented, then command accuracy is improved, but system complexity increases
Solution Approach 1:
The system uses periodic action by implementing distinct recognition phases: first phase for wake word detection, second phase for command processing. Each phase has specific activation conditions and power mode requirements, making the complex logic manageable through temporal separation of functions
Solution Approach 2:
The controller performs preliminary wake word detection before activating full command processing. The wake word recognition prepares the system by transitioning to active-standby mode, and only then does the system process the secondary command. This preliminary action simplifies the overall control logic by separating activation from command execution
Data Source
AI summary
The present disclosure provides display device which allows a user to control power supply from a distance. The display device may comprise a display unit; a speech obtaining unit for recognizing speech; and a control unit for controlling a power supply mode to an active mode when both a primary command and a second command are sequentially recognized through the speech obtaining unit.