Touch Input Activation via Region of Interest Filtering
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Solution Overview
Problem
Electronic devices with touch screens often experience malfunctions due to the way users hold them, leading to unintended touch inputs and incorrect activation of events, especially when the device is held in various shapes or directions.
Innovation Solution
An electronic device with a touch screen divided into a first and second portion, equipped with a processor and memory that recognizes touch input points, separates them, and activates inputs based on location and duration criteria to differentiate intended from unintended touches, reducing malfunctions regardless of the device's orientation or shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the touch screen activates touch inputs based on any touch point on the screen, then the device responds to all user interactions, but unintended touches occur when the user holds the device in various positions
Solution Approach 1:
The patent applies local quality by defining a specific region of interest (ROI) on the touch screen where only touches within this region are activated. The processor determines whether a touch point falls within the ROI before activating the touch input, thereby distinguishing between intentional touches (within ROI) and unintentional touches (outside ROI) when the device is held in various positions.
2Productivity
If the device activates touch inputs without verifying touch location relative to a reference point, then the activation process is simple and fast, but malfunctions occur due to incorrect touch recognition
Solution Approach 1:
The patent implements preliminary action by pre-defining a region of interest (ROI) with reference to a first point on the touch screen before touch input occurs. The processor uses this pre-established ROI to quickly determine whether subsequent touch points fall within the valid activation region, eliminating the need for complex real-time calculations while ensuring accurate touch recognition.
3Device complexity
If the touch screen recognizes all touch points equally, then the system is simple to implement, but it cannot differentiate between intended and unintended touches
Solution Approach 1:
The patent applies local quality by creating a differentiated touch recognition system where the touch screen evaluates touch points based on their location relative to a predefined region of interest. Touches within the ROI are recognized as intentional, while touches outside the ROI are treated as unintentional, thereby enabling intention detection without requiring complex additional hardware.
Solution Approach 2:
The patent introduces an intermediary mechanism (the region of interest and its reference point) that mediates between the raw touch input and the activation decision. The processor uses this intermediary framework to filter and interpret touch points, distinguishing between valid and invalid touches based on their spatial relationship to the ROI, thereby improving touch intention detection accuracy.
Data Source
AI summary
An electronic device, according to an embodiment of the disclosure, may comprise: a touchscreen including a first portion and a second portion; a memory; and a processor operatively connected to the touchscreen and the memory. The memory may store instructions that, when executed, cause the processor to: recognize a first point at which a touch input is in contact with the second portion, recognize a second point at which the touch input is separated from the touch screen, recognize at least one third point at which the touch input is periodically in contact with the touch screen in a state in which the touch input is in contact with the touch screen, and activate the touch input based on whether at least one of the second point and the at least one third point is located outside a specified area having a specified radius set with respect to the first point.