Touch Screen Zoom Control via Movement Angle Detection
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Solution Overview
Problem
Portable electronic devices with touch screens face challenges in providing an intuitive user interface for zooming in and out due to limited display size and the absence of separate input devices, making it difficult for users to access and navigate various services effectively.
Innovation Solution
A method and apparatus that detect touch movements on a touch screen, determine the angle of movement, and adjust the display information accordingly, allowing for zooming in or out based on the angle and distance of the touch movement, utilizing a processor to implement this functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a touch screen is installed to improve space utilization and increase display size, then the display area is increased, but the ease of operation for zooming in/out becomes difficult without separate input devices
Solution Approach 1:
The touch screen serves multiple functions: it acts as both the display device and the input device for zooming operations. By detecting multi-point touch patterns and movement trajectories, the screen enables zooming in/out, panning, and other navigation functions without requiring separate input devices, thus achieving multi-functionality that resolves the contradiction between increased display area and ease of operation.
Solution Approach 2:
The processor acts as an intermediary that interprets complex touch gestures and translates them into meaningful zoom commands. By analyzing touch point coordinates, movement distances, and temporal patterns, the system mediates between the user's intuitive touch actions and the required zoom operations, making the interface easier to operate despite the absence of dedicated input devices.
2Ease of operation
If the display size is limited to maintain portability, then the device remains portable, but the ability to display various contents effectively is reduced
Solution Approach 1:
The system adds temporal and gestural dimensions to the interaction model. By detecting the duration, speed, and trajectory of touch movements across the screen, the system distinguishes between different user intentions (zoom vs. pan vs. select) within the limited spatial area, effectively expanding the functional capacity of the small display without compromising portability.
Solution Approach 2:
The touch screen is segmented into multiple functional zones and the touch interaction is segmented into distinct phases (initial touch, movement, release). By analyzing the sequence and characteristics of touch events across different screen regions, the system enables comprehensive content navigation and zooming capabilities that maximize the effective use of limited display space.
3Loss of information
If zooming functions are added to improve content accessibility, then content visibility is improved, but the device complexity increases
Solution Approach 1:
The system uses the touch screen's inherent capabilities (touch sensing and display) to implement zooming functions without adding separate hardware components. The processor leverages the existing touch controller and display driver to detect gestures and render zoomed content, allowing the device to service its own zooming needs using existing infrastructure, thus minimizing the increase in device complexity.
Solution Approach 2:
The zooming functionality is merged with the existing touch interface framework. The same touch detection mechanisms used for basic interaction are extended to recognize zoom gestures, and the display rendering system is enhanced to support variable scaling. This integration approach combines multiple functions (touch input, display output, gesture recognition, content scaling) into a unified system, avoiding the need for separate dedicated zoom hardware.
Data Source
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AI summary
A method and apparatus for zooming in/out and displaying display information in an electronic device are provided. The method includes detecting an angle according to a touch movement and zooming in/out display information based on the angle according to the touch movement.