Mobile Terminal Push Key and Touchscreen Voice Control

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Solution Overview

Problem

Mobile terminals with touchscreens face inconvenience due to potential damage or failure of the touchscreen, leading to issues with data input and user interaction, necessitating a solution for continued functionality even when the touchscreen is not functioning normally.

Innovation Solution

A mobile terminal design incorporating a push key and a controller that displays virtual keys and executes a speech recognition mode if no touch input is sensed after a set period, allowing users to interact through voice commands, with guidance provided audibly and the option to revert to touchscreen input when necessary.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the terminal uses a touchscreen for user interaction, then the ease of operation is improved, but the reliability deteriorates due to potential touchscreen damage or failure

Engineering Contradiction:
Improveease of operationVSAvoidreliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent changes the interaction mode parameter from touchscreen-only to multi-mode (touchscreen, voice, push key combinations). When touchscreen reliability drops, the system switches to alternative interaction parameters (voice commands, sequential push key inputs) to maintain operational capability.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent implements dynamic adaptability where the terminal automatically detects touchscreen status and adjusts the available interaction methods in real-time. If touchscreen failure is detected, the system dynamically enables voice recognition and push key-based virtual keyboard modes, ensuring continuous operational flexibility.

Inventive Principle:
Principle #15Dynamics

2Reliability

If the terminal provides multiple input methods for touchscreen failure, then the reliability is improved, but the device complexity increases

Engineering Contradiction:
ImprovereliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent makes existing components multi-functional: the push key serves both traditional navigation and as a trigger for voice recognition or virtual keyboard modes; the touchscreen can operate in full-touch mode or display virtual keys for push-key input. This universal approach adds reliability without requiring separate dedicated components for each input method.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges multiple input methods into a unified control system. Voice recognition, push key inputs, and touchscreen interactions are integrated under a single control framework managed by the controller, which automatically selects and coordinates the appropriate input method based on system state, reducing overall system complexity despite multiple input options.

Inventive Principle:
Principle #5Merging (Combining)

3Ease of operation

If the terminal automatically switches to speech recognition mode, then the ease of operation is improved for touchscreen failures, but the loss of time increases due to mode switching delays

Engineering Contradiction:
Improveease of operationVSAvoidloss of time
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The patent prepares alternative input modes in advance by displaying virtual keys on the touchscreen that can be activated through push key combinations. This preliminary setup allows immediate switching to alternative input methods without waiting for voice recognition processing, reducing time loss while maintaining ease of operation.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system provides self-service by automatically detecting touchscreen unresponsiveness and initiating alternative input modes without requiring user intervention. The controller monitors touchscreen status and autonomously switches to virtual keyboard mode or voice recognition, minimizing the time users spend dealing with mode transition delays.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP3289755B1Mobile terminal and control method therefor
Publication Date: 2019.12.25 LG ELECTRONICS INC
  • EP3289755B1 patent drawingFigure 1A
  • EP3289755B1 patent drawingFigure 1B~1C
  • EP3289755B1 patent drawingFigure 2A~2B

AI summary

Provided are a mobile terminal and a control method therefor. The mobile terminal includes: a touchscreen disposed on one side of a main body of the terminal; a push key mounted on the main body to receive a push input; and a controller that displays virtual keys associated with the settings or control of the terminal on the touchscreen when the push key is pushed, and executes functions associated with a speech recognition mode when a set period of time elapses without at least one touch input on the virtual keys being sensed.