Touch Key Unintentional Trigger Prevention via Direction State Detection
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Solution Overview
Problem
Smartphone touch keys are often unintentionally triggered during gaming or other operations due to accidental finger slides on the touch screen, leading to issues like returning to the desktop or interrupting applications.
Innovation Solution
A method and terminal implementation that detects the current direction state of the touch screen and determines if a touch operation on the touch key is unintentional by checking for a second touch operation within a preset time period, preventing accidental triggering by delaying the report of the first touch operation if a second touch on the screen occurs within that timeframe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the touch key is directly connected to the touch screen sensing area, then the touch key response is fast and simple, but the touch key is easily unintentionally triggered during sliding operations on the touch screen
Solution Approach 1:
The patent divides the touch sensing area into distinct regions: a first sensing area corresponding to the touch key and a second sensing area corresponding to the touch screen display area. By segmenting the sensing areas and applying different judgment logic to each region, the system can distinguish between intentional touch key presses and accidental contacts during sliding operations, thereby improving triggering accuracy while maintaining response speed.
2Measurement precision
If the touch key sensing area is enlarged to improve detection sensitivity, then the touch key becomes more responsive, but the likelihood of accidental triggering during finger slides increases
Solution Approach 1:
The patent applies different quality characteristics to different regions of the touch sensing area. The first sensing area (touch key region) has enhanced detection sensitivity with dedicated judgment logic, while the second sensing area (display region) has standard detection. This local differentiation allows the touch key to maintain high responsiveness without increasing the overall accidental triggering rate, as the enhanced sensitivity is confined to the key region only.
3Speed
If the system immediately responds to touch key detections, then the user feedback is prompt, but unintentional triggers cause immediate incorrect actions like returning to desktop or interrupting applications
Solution Approach 1:
The patent implements a feedback mechanism where the system first detects touch operations in the first sensing area, then validates whether the touch meets the specific judgment criteria for touch key activation. Only after this validation feedback confirms the touch is intentional does the system execute the corresponding action. This feedback loop maintains prompt response while ensuring operational accuracy by filtering out accidental triggers.
Data Source
AI summary
A method, a device and a terminal for preventing unintentional triggering of a touch key are disclosed. The method is applicable to a terminal having a touch key and a touch screen including a touch area. The method includes obtaining a current direction state of the touch screen. The method also includes detecting a first touch operation to a touch key when the current direction state of the touch screen is a first direction state. Furthermore, the method includes determining that the first touch operation is an unintentional operation if a second touch operation to the touch area is detected within a preset time period, when the first touch operation is detected.