Mobile Terminal Touchscreen Grip Zone Control
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Solution Overview
Problem
Users face inconvenience and malfunctions when photographing with mobile terminals due to frequent touchscreen interactions while gripping the device, which affects the grip feeling and can lead to unintended touch inputs.
Innovation Solution
A mobile terminal with a controller that determines the state of a pointer on the touchscreen, ignoring touch inputs within a designated grip zone to prevent malfunctions and enhance grip feeling, while also changing photograph modes based on subject motion or terminal posture for improved photography experiences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the touchscreen is made larger to enhance display performance, then the display area is improved, but the grip stability deteriorates because the touchscreen occupies more space in the hand-held area
Solution Approach 1:
The touchscreen is divided into multiple functional regions: a grip zone along the edge for stable holding, a preview region for displaying captured images, and a shutter button region for taking photos. This segmentation allows the grip zone to maintain stability while the preview and shutter regions provide full touchscreen functionality.
2Area of stationary object
If the bezel is made thinner to increase display-to-body ratio, then the display performance is improved, but the structural strength deteriorates making the terminal more prone to damage
Solution Approach 1:
The grip zone is merged with the bezel structure, combining the functional grip area with the structural support element. This integration allows the bezel to maintain sufficient thickness for strength while still providing a comfortable grip surface, and the grip zone serves dual purposes of both structural support and touch input recognition.
3Measurement precision
If the camera performance is enhanced to improve photographing quality, then the photographing function is improved, but the device complexity increases
Solution Approach 1:
The camera system is integrated with multiple functions: it serves as the primary photographing device, provides live preview display on the touchscreen, enables video recording, and supports panorama mode. The same camera hardware performs multiple functions, reducing the need for separate components and managing complexity through software-based functionality.
4Ease of operation
If the touchscreen sensitivity is increased to improve touch response, then the ease of operation is improved, but the reliability deteriorates due to false touch inputs during gripping
Solution Approach 1:
Different regions of the touchscreen have different sensitivity characteristics. The grip zone has reduced sensitivity to ignore accidental touches during holding, while the preview and shutter button regions maintain high sensitivity for intentional inputs. This local differentiation allows the touchscreen to be both responsive and reliable in different areas.
Data Source
AI summary
A method of controlling a mobile terminal, and which includes entering, via a controller controlling a camera of the mobile terminal, a camera photograph mode; determining, via the controller of the mobile terminal, a position of a first pointer contacting a touchscreen in the camera photograph mode and whether the first pointer is in a first state or a second state when the first pointer is located in a preset region on the touchscreen; ignoring a touch input through the pointer, when the first pointer is determined as being in the first state; and performing a function corresponding to the touch input through the pointer, when the first pointer is determined as being in the second state.