Touch Screen Frame Cropping via Dual Touch Detection
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Solution Overview
Problem
Current touch screen technologies require complex gestures to crop screen frames, which complicates user operations and increases the burden on users, especially in space-constrained portable devices where screen size is limited.
Innovation Solution
A method and apparatus that detect two user touches on a touch screen, defining a cropping area based on touch positions and displacements, allowing for simplified cropping of screen frames and storing the cropped frames as image or text files using character recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional keyboard is disposed on the portable electronic apparatus, then the input function is provided, but the surface area and cost increase
Solution Approach 1:
The patent merges the keyboard and screen into a single touch screen interface, where the touch screen serves both as display and input device. This integration eliminates the need for a separate physical keyboard, reducing surface area while maintaining input functionality through touch gestures.
Solution Approach 2:
The touch screen is designed to perform multiple functions: it serves as both the display screen and the keyboard input interface. By making the touch screen universal, the device eliminates dedicated keyboard space while preserving text input capability through virtual keyboard gestures.
2Measurement precision
If complex gestures are required to crop screen frames, then precise control is achieved, but user operation complexity increases
Solution Approach 1:
The cropping operation is segmented into distinct touch gestures: a first touch to initiate cropping mode, a second touch to select the cropping area, and a third touch to confirm. This segmentation breaks down the complex cropping task into simple, sequential steps that are easy to execute while maintaining precision.
Solution Approach 2:
The system enters a preliminary cropping selection mode after the first touch, where the user can preview and adjust the cropping area before final confirmation. This preliminary action allows users to precisely define the cropping region without committing immediately, reducing operation complexity while ensuring accuracy.
Data Source
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AI summary
A screen frame cropping method, a screen frame cropping apparatus, and a computer program product adapted to an electronic apparatus having a touch screen are provided. In the screen frame cropping method, a frame is displayed on the touch screen, and a first touch and a second touch performed by a user on the touch screen are detected. When the first touch and the second touch satisfy a predetermined condition, a cropped frame of the frame is stored as an image file. The cropped frame is determined according to at least one first touch position of the first touch and at least one second touch position of the second touch.