Mobile Terminal Bezel Touch Blocking via Grip Detection
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Solution Overview
Problem
Touch-caused malfunctions occur in mobile terminals when users grip them, causing unintended inputs on the touch screen's bezel region, leading to operational errors.
Innovation Solution
The mobile terminal's controller detects and blocks touch inputs on the bezel region by setting a grip pattern based on predefined coordinates and touch areas, preventing malfunctions by distinguishing between intentional touches and gripping actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the touch screen is used as the only input device, then the device structure is simplified and space is saved, but touch-caused malfunctions occur when users grip the device
Solution Approach 1:
The touch screen area is segmented into multiple regions including a bezel region and a touch-sensitive region. By dividing the touch screen into distinct functional zones, the system can differentiate between touches on the bezel (caused by gripping) and intentional touches on the display area, thereby preventing malfunctions while maintaining the simplified touch-only structure.
Solution Approach 2:
Different regions of the touch screen are assigned different functions and sensitivity characteristics. The bezel region is configured with different touch response properties compared to the main display area, allowing the system to ignore touches in the bezel region during gripping while remaining responsive to intentional inputs on the display.
2Ease of operation
If the bezel region is made touch-sensitive to enable navigation, then user interaction is improved, but unintentional touches during gripping cause operational errors
Solution Approach 1:
The touch sensitivity of the bezel region is made dynamic rather than static. The system adjusts the touch response state of the bezel region based on the detected touch pattern, duration, and pressure. During gripping conditions, the bezel region temporarily reduces or disables touch response, while maintaining responsiveness during intentional user interactions.
Solution Approach 2:
The system performs preliminary analysis of touch patterns before executing commands. By detecting the duration, pressure, and location of touches in advance, the system can determine whether a touch on the bezel region is caused by gripping or intentional user input, and accordingly决定是否 to respond with the intended command.
3Reliability
If touch input blocking is implemented on the bezel region, then malfunction is prevented, but intentional touches on the bezel for navigation are blocked
Solution Approach 1:
The system implements feedback-based touch processing where touch parameters such as duration, pressure, and movement are continuously monitored and fed back to the control system. Based on this feedback, the system dynamically adjusts whether to block or respond to bezel region touches, allowing intentional navigation inputs to be recognized while blocking gripping-induced malfunctions.
Solution Approach 2:
The system changes touch response parameters such as threshold duration, pressure levels, and response sensitivity based on the detected touch context. By adjusting these parameters dynamically, the system can distinguish between brief light touches during gripping and deliberate navigation inputs, selectively blocking only the former while maintaining the latter.
Data Source
AI summary
Disclosed is a device for controlling a mobile terminal, including a touch sensor that detects a touch input with respect to a specific region of a touch screen, and a controller that determines whether the touch input continues to be received for reference time for which a state in which the mobile terminal is gripped by a user is recognized and that, when the touch input continues to be received for the reference time, blocks touch information corresponding to the touch input.