Mobile Touchscreen Partial Region Capture Using Dual-Touch Hold

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Solution Overview

Problem

Conventional mobile terminals cannot capture or record specific partial regions of the screen information without first capturing the entire region and then editing it, limiting user convenience and efficiency.

Innovation Solution

A mobile terminal that allows users to select and set a partial region on the touch screen using dual touch inputs maintained for a reference time, enabling functions like capturing or recording the selected region through preset conditions applied via touch inputs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the entire region of screen information is captured or recorded, then the complete screen content is obtained, but the user cannot selectively capture or record only the desired partial region

Engineering Contradiction:
Improveease of capturing partial regionVSAvoidtime for capturing and editing
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The patent divides the screen capture function into two stages: first, the user selects a partial region of interest on the touch screen; second, the system captures or records only that selected region. This segmentation allows users to obtain only the necessary information without capturing the entire screen, thereby improving operational ease and reducing time loss.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent requires the user to perform a preliminary selection action by touching and holding the start point, then moving to and touching the end point to define the partial region before initiation of the capture or recording operation. This preliminary action enables precise region specification, allowing the system to subsequently capture only the desired area without requiring post-capture editing.

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If the user selects a partial region by touching and holding points, then the desired region can be captured, but the operation becomes more complex

Engineering Contradiction:
Improveease of selecting partial regionVSAvoidcomplexity of touch input method
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent enables the touch screen to automatically interpret and execute region selection based on simple user touch patterns. When a user touches and holds a start point, then moves to and touches an end point, the system automatically defines the partial region without requiring additional manual configuration or complex interface interactions. This self-service mechanism simplifies the operation while maintaining precise region selection capability.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP3570154B1Mobile terminal and method for controlling the same
Publication Date: 2026.04.15 LG ELECTRONICS INC
  • EP3570154B1 patent drawingFigure 1A
  • EP3570154B1 patent drawingFigure 1B~1C
  • EP3570154B1 patent drawingFigure 2

AI summary

Disclosed are a mobile terminal having a display unit for outputting screen information and capable of enhancing a user's convenience related to the screen information, and a method for controlling the same. The mobile terminal includes: a touch screen configured to display screen information; and a controller configured to select a region of the touch screen based on first and second touch inputs when the first and second touch inputs applied to different points of the touch screen are maintained for a reference amount of time without being released, and configured to execute a function related to the selected region when a touch input corresponding to a preset condition is applied to the touch screen while the first and second touch inputs are maintained without being released.