Mobile Terminal Multi-Screen Touch Coordinate Mapping
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Solution Overview
Problem
Mobile terminals with extended display regions through external devices or foldable designs struggle to recognize multi-touch inputs when users interact with different display areas, leading to individual touch inputs being misidentified rather than processed as multi-touch events.
Innovation Solution
A mobile terminal with a controller that combines first and second touch events to generate a multi-touch event, mapping coordinates and determining starting points to process touch inputs from different devices or display regions as a unified input, enabling functions like screen enlargement or rotation based on pinch-in or pinch-out inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display region is extended through an external device interworking with the mobile terminal, then the display area is increased, but the multi-touch input recognition fails when users touch different displays simultaneously
Solution Approach 1:
The patent merges the coordinate systems of the mobile terminal display and external device display into a unified coordinate system. The controller integrates touch coordinates from both devices, mapping them to a single reference frame that enables recognition of multi-touch inputs across different physical displays as if they were one continuous surface.
Solution Approach 2:
The controller acts as an intermediary that receives touch inputs from both the mobile terminal and external device, processes their coordinates through mapping and transformation, and generates unified multi-touch events. This intermediary processing layer reconciles the separate coordinate systems into a coherent input representation.
2Ease of operation
If each display is treated as a separate device, then each touch is processed independently, but multi-touch inputs such as pinch-in or pinch-out cannot be recognized
Solution Approach 1:
The controller implements a universal touch processing mechanism that handles both individual touch inputs on separate displays and multi-touch inputs across displays. By establishing a unified coordinate system, the system gains the versatility to recognize various multi-touch gestures including pinch-in, pinch-out, and other gestures that require coordination between multiple touch points on different displays.
3Adaptability or versatility
If execution screens of different applications are displayed in different regions, then each region processes touch inputs locally, but multi-touch inputs from both hands cannot be entered
Solution Approach 1:
The patent introduces a virtual unified coordinate space that transcends the physical separation of different display regions and applications. By mapping coordinates from multiple displays and application windows into this higher-dimensional unified space, the system enables multi-touch gestures to be recognized across different application contexts, allowing users to perform gestures involving elements in different applications simultaneously.
Data Source
AI summary
The present invention relates to a mobile terminal which has a touch screen including a plurality of regions classified by software, or which is linked to another touch screen, the mobile terminal comprising: a first touch screen for displaying screen image information about an application being executed; a communication unit for performing a communication connection with a second touch screen linked to the first touch screen; and a control unit which generates a multi-touch event by combining a first touch event formed by a first touch input and a second touch event formed by a second touch input when the second touch input is applied to either the first or second touch screen in a state in which the first touch input is applied to the other one of the first and second touch screen, and which performs a function according to the multi-touch event with respect to the screen image information displayed on the touch screen to which the first touch input has been applied.