Touch Screen Invalid Area Detection for Accidental Touch Prevention
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Solution Overview
Problem
Accidental touch operations on thin-framed mobile phones are common due to edge screen interactions, leading to unintended functions being triggered, especially in interfaces like call records and SMS, which complicates user operations and can result in improper function activation.
Innovation Solution
A method and apparatus that detect touch points on a touch screen and determine if they are within an invalid touch area, preventing responses to such points to avoid accidental triggers, by setting specific areas around the edges or elsewhere as non-responsive zones based on user or system-defined settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the touch screen area is increased to provide more display space, then the display area is improved, but the frame becomes thinner which increases the likelihood of accidental edge touches
Solution Approach 1:
The patent applies local quality by creating a dead zone (invalid touch area) at specific locations around the edge of the touch screen. This dead zone is positioned at a predetermined distance from the touch screen edges, making the edge regions non-responsive to touch inputs. This allows the main display area to remain large while preventing accidental touches at the periphery where users commonly grip the device.
2Reliability
If screen locking methods are used to prevent accidental operations, then reliability is improved, but user operation complexity increases
Solution Approach 1:
The patent segments the touch screen into two distinct regions: a valid touch area and an invalid touch area (dead zone). The invalid touch area is positioned at the edges of the screen at a predetermined distance from the boundaries. This segmentation allows the system to differentiate between intentional touches within the valid area and accidental touches in the edge region, preventing accidental operations without requiring screen locking or increasing operational complexity.
Data Source
AI summary
Method and apparatus for preventing an accidental touch operation. The method includes determining, when detecting a touch point in a display area on a touch screen, whether the touch point is within an invalid touch area based on the detected touch point in the display area; and making a response to the touch point only if it is determined that the touch point is not within the invalid touch area. If it is determined that the touch point is within the invalid touch area, no response to the touch point is made.