Insertion Marker Placement on Touch Screen Displays
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Solution Overview
Problem
Portable electronic devices face challenges in designing user interfaces that allow easy interaction due to their compact size and increased functionality, leading to complex key sequences and inflexible menu systems, making it difficult for users to position and manage insertion markers, such as cursors, efficiently.
Innovation Solution
A portable multifunction device with a touch-sensitive display and graphical user interface that allows users to interact through finger contacts and gestures, enabling intuitive placement and movement of insertion markers by detecting finger contacts and movements on the screen, thereby simplifying text entry and navigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If physical pushbuttons are used to increase functionality, then the device can perform more functions, but the user interface becomes more complex and harder to operate
Solution Approach 1:
The patent replaces physical pushbuttons with a touch-sensitive display that responds to finger contacts and gestures. This substitution eliminates the need for complex menu hierarchies and key sequences, allowing users to directly interact with the display surface to position insertion markers and access functions, thereby simplifying the user interface while maintaining device versatility.
2Volume of moving object
If the screen size is reduced to make the device more compact, then the device becomes more portable, but the text entry tools and cursor become smaller and harder to position
Solution Approach 1:
The patent uses the user's finger as an intermediary tool to position the insertion marker. Instead of requiring precise targeting of a small cursor on the screen, the user simply touches the desired location directly on the touch-sensitive display. The system detects the finger contact position and places the insertion marker accordingly, effectively using the finger as a mediating instrument that bridges the gap between the user and the small on-screen elements.
3Device complexity
If conventional text entry methods are used with small cursors, then the device maintains simplicity, but users experience difficulty in efficiently positioning the insertion marker
Solution Approach 1:
The touch-sensitive display allows users to directly touch the screen at the desired insertion point, and the system automatically detects the contact position and places the insertion marker there. This self-service approach eliminates the need for complex cursor navigation commands or menu selections, allowing users to efficiently position the insertion marker simply by touching where they want to type, thereby improving text entry efficiency without increasing system complexity.
Data Source
AI summary
In accordance with some embodiments, a computer-implemented method is performed at a portable electronic device with a touch screen display. The method can include: displaying graphics on the touch screen display, detecting a finger contact on the touch screen display, and, in response to the detected finger contact, inserting an insertion marker in the graphics at a first location. The method can further include detecting a finger movement on the touch screen display and, irrespective of initial distance from finger to insertion marker on the touch screen display, moving the insertion marker in accordance with the detected finger movement from the first location to a second location in the graphics.