Mobile Device Speech Recognition Trigger Word Detection

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Solution Overview

Problem

Existing mobile computing devices require physical activation or manual input to initiate voice command interfaces, which can deplete battery power and limit usability, especially when the device is connected to an external power source.

Innovation Solution

A mobile computing device system that detects coupling to an external power source and automatically activates a speech recognition mode with a trigger word detection subroutine, allowing voice command control without physical button presses or manual activation, and deactivates when powered by a battery.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the device continuously operates speech recognition and detection algorithms, then voice command control is always available, but battery power is rapidly depleted

Engineering Contradiction:

Improvevoice command control availabilityVSAvoidbattery power consumption

Core Design Contradiction:

Ease of operationVSUse of energy by moving object

Solution Approach 1:

The system dynamically adjusts its operational state based on power availability. When external power is detected, the device transitions to a state where continuous speech recognition operates. When battery power is detected, the system transitions to a manual activation state, changing its behavior according to the power source available

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The device automatically detects the power source type (external vs. battery) and self-adjusts its operational mode without user intervention. The system monitors its own power state and autonomously switches between continuous speech recognition and manual activation modes

Inventive Principle:

Principle #25Self-service

2Use of energy by moving object

If the device requires manual activation of voice command interface, then battery power is conserved, but ease of use is reduced especially when device is out of reach

Engineering Contradiction:

Improvebattery power conservationVSAvoidvoice command activation convenience

Core Design Contradiction:

Use of energy by moving objectVSEase of operation

Solution Approach 1:

The device automatically detects when it is connected to an external power source and autonomously activates continuous speech recognition mode, eliminating the need for manual button presses. The system serves itself by monitoring its own power state and adjusting its operational convenience accordingly

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS8452597B2Systems and methods for continual speech recognition and detection in mobile computing devices

Publication Date: 2013.05.28 GOOGLE LLC

AI summary

The present application describes systems, articles of manufacture, and methods for continuous speech recognition for mobile computing devices. One embodiment includes determining whether a mobile computing device is receiving operating power from an external power source or a battery power source, and activating a trigger word detection subroutine in response to determining that the mobile computing device is receiving power from the external power source. In some embodiments, the trigger word detection subroutine operates continually while the mobile computing device is receiving power from the external power source. The trigger word detection subroutine includes determining whether a plurality of spoken words received via a microphone includes one or more trigger words, and in response to determining that the plurality of spoken words includes at least one trigger word, launching an application corresponding to the at least one trigger word included in the plurality of spoken words.