Dynamic Scroll Bars for Touchscreen Document Positioning
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Solution Overview
Problem
Conventional user interfaces on portable devices are inflexible, complex, and inefficient, making it difficult for users to navigate and understand the position of displayed portions of electronic documents and lists, while also occupying valuable screen space.
Innovation Solution
A touch-sensitive display with a graphical user interface that uses vertical and horizontal bars to indicate the position of a displayed portion of an electronic document or list, which are dynamically displayed and removed based on user interaction, allowing intuitive navigation without reducing screen area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional user interfaces use fixed scroll bars to indicate document position, then users can understand their location in the document, but the scroll bars occupy valuable screen space and reduce the display area for content
Solution Approach 1:
The patent implements dynamic scroll bars that automatically adjust their visibility and position based on user interaction. The scroll bars are displayed temporarily when users scroll through content and automatically hidden after a predetermined condition is met, transforming the static interface element into a dynamic one that adapts to user needs without permanently occupying screen space
Solution Approach 2:
The scroll bars are displayed periodically rather than continuously - they appear when scrolling occurs and disappear after a predetermined time or condition, creating a periodic display pattern that provides necessary information only when needed, thereby minimizing screen space occupation while maintaining document position awareness
2Adaptability or versatility
If conventional user interfaces add more pushbuttons to access features, then device functionality increases, but the interface becomes more complex and requires users to memorize complicated key sequences and menu hierarchies
Solution Approach 1:
The patent merges multiple interface functions into a unified touch-sensitive display system. Instead of separate pushbuttons for navigation, scrolling, and selection, the system combines all these functions into a single touch interface where users can interact with the display surface directly, eliminating the need for complex menu hierarchies and multiple physical controls
Solution Approach 2:
The touch-sensitive display serves multiple functions simultaneously - it displays content, provides navigation controls through dynamic scroll bars, detects user interactions, and responds to touches in various locations. This universal interface replaces numerous specialized pushbuttons with a single multi-functional touch surface that adapts to different user needs
Data Source
AI summary
In a computer-implemented method, a portion of an electronic document is displayed on a touch screen display of a portable multifunction device. The displayed portion has a vertical position and a horizontal position in the electronic document. An object is detected on or near the displayed portion of the electronic document. In response to detecting the object, a vertical bar and a horizontal bar are displayed on top of the displayed portion. The vertical bar has a vertical position on top of the displayed portion that corresponds to the vertical position in the electronic document of the displayed portion. The horizontal bar has a horizontal position on top of the displayed portion that corresponds to the horizontal position in the electronic document of the displayed portion. After a predetermined condition is met, display of the vertical bar and of the horizontal bar is ceased.