Wearable Wireless Device Full-Duplex Voice Control

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Solution Overview

Problem

Current radios, including wearable types, employ simplex or half-duplex communication methods, making voice input inconvenient, especially for wearable devices, and suffer from high power consumption, requiring frequent battery replacements and potential function failures due to battery depletion.

Innovation Solution

A wearable wireless communication device utilizing a full-duplex function with a time-sharing method for simultaneous transmission and reception, incorporating a controller that enables automatic voice signal transmission without a push-to-talk button and reduces power consumption through a sleep mode and auto-polling combination, along with an ergonomically designed case for comfort and a method for setting communication groups using code combinations and DTMF signals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If simplex or half-duplex communication method is used, then device complexity is reduced, but communication convenience and voice input ease deteriorate

Engineering Contradiction:

Improvevoice input convenienceVSAvoidcommunication method complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent inverts the traditional push-to-talk operation by automatically detecting voice signals and initiating transmission without requiring button press. The wearable device uses voice activity detection to automatically start and stop transmission, making voice input as convenient as speaking naturally.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The device performs self-service by automatically detecting when the user wants to speak through voice signal detection and autonomously controlling the transmission state. The system monitors microphone input and automatically activates transmission when voice is detected, eliminating the need for manual button operation.

Inventive Principle:

Principle #25Self-service

2Productivity

If full-duplex communication with simultaneous transmission and reception is implemented, then communication efficiency is improved, but device complexity and power consumption increase

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidtransmission and reception system complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent implements time-division multiplexing where transmission and reception occur in periodic time slots rather than truly simultaneously. The device alternates between transmitting and receiving states in a structured sequence, achieving full-duplex communication效果 while managing complexity through periodic operation.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system dynamically switches between transmission and reception modes based on real-time communication needs and detected voice activity. The device adapts its operational state continuously, transitioning between talk and listen modes to optimize communication efficiency while managing system complexity.

Inventive Principle:

Principle #15Dynamics

3Reliability

If continuous power supply is provided for frequent communication operations, then communication availability is improved, but battery consumption increases and requires frequent replacement

Engineering Contradiction:

Improvecommunication availabilityVSAvoidbattery consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The device enters sleep mode during periods of no voice activity and activates only when needed. Power is supplied periodically during voice detection and transmission events rather than continuously, significantly reducing overall battery consumption while maintaining communication availability when required.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system autonomously manages power states by detecting voice activity and automatically transitioning between active and sleep modes. This self-service power management ensures communication is available when needed while minimizing energy consumption during idle periods.

Inventive Principle:

Principle #25Self-service

4Ease of operation

If push-to-talk button operation is used for voice input, then device control precision is improved, but ease of operation for wearable devices deteriorates

Engineering Contradiction:

Improvevoice input easeVSAvoidvoice input control precision

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The patent replaces the mechanical push-to-talk button system with acoustic voice signal detection. The microphone and signal processing circuitry detect voice waves and automatically trigger transmission, substituting mechanical operation with acoustic sensing to improve ease of use for wearable devices.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentEP3346737B1Wearable wireless communication device and communication group setting method using the same

Publication Date: 2020.11.18 PARK(KR)

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AI summary

Discussed is a wearable wireless communication device that can set a communication group with other wireless communication devices within a limited range by converting and sending out communication group setting information into a dual tone multi-frequency (DTMF) signal or by transmitting communication group setting information including a certain received signal strength indicator (RSSI) reference value and a communication group setting method using the same.