Touch-Screen Document Translation and Scaling Gestures
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Solution Overview
Problem
Conventional user interfaces on portable electronic devices with touch-screen displays are inflexible and cumbersome for scrolling lists, translating, rotating, and scaling electronic documents, leading to user frustration due to complex key sequences and menu hierarchies, and the small size of display screens.
Innovation Solution
A touch-sensitive device with a graphical user interface that detects finger movements to scroll, translate, rotate, and scale electronic documents intuitively, displaying areas beyond document edges and reversing direction when edges are reached, allowing seamless navigation and adjustment of document size through gestures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional user interfaces with pushbuttons and menu systems are used, then device functionality can be accessed, but user interaction becomes complex and frustrating due to multiple key sequences and menu hierarchies
Solution Approach 1:
The patent replaces mechanical pushbutton interfaces with a touch-sensitive display that detects finger movements. This substitution eliminates the need for physical buttons and complex menu navigation, allowing users to directly manipulate the display surface to scroll lists, translate, rotate, and scale electronic documents through intuitive gestures rather than memorized key sequences
Solution Approach 2:
The touch-sensitive display enables users to directly interact with and manipulate document content through finger movements on the display surface itself. The interface responds naturally to user gestures, allowing direct control of scrolling, translating, rotating, and scaling operations without requiring intermediate menu selections or command sequences
2Length of moving object
If the display screen size is reduced for portable devices, then device portability is improved, but document navigation becomes more difficult due to limited display area
Solution Approach 1:
The patent utilizes the touch-sensitive display surface as an interactive control plane, allowing finger movements across the display to control document manipulation. This transforms the limited display area from a passive viewing surface into an active control interface, enabling comprehensive document navigation (scrolling, translating, rotating, scaling) within the constrained physical dimensions of portable devices
Solution Approach 2:
The touch-sensitive display serves multiple functions simultaneously: it displays document content while also serving as the control interface for all document manipulation operations. The same surface used to view documents also detects finger movements to execute scrolling, translating, rotating, and scaling commands, eliminating the need for separate control mechanisms
3Ease of operation
If touch-sensitive display is used for document manipulation, then ease of operation is improved, but the interface must handle multiple gestures and movements which increases processing complexity
Solution Approach 1:
The patent segments document manipulation into distinct gesture types (scrolling, translating, rotating, scaling), each detected and processed by specific algorithms. This segmentation allows the system to handle complex interactions by breaking them down into manageable, recognizable patterns that can be processed efficiently through dedicated detection routines
Data Source
AI summary
In accordance with some embodiments, a computer-implemented method for use in conjunction with a device with a touch screen display is disclosed. In the method, a movement of an object on or near the touch screen display is detected. In response to detecting the movement, an electronic document displayed on the touch screen display is translated in a first direction. If an edge of the electronic document is reached while translating the electronic document in the first direction while the object is still detected on or near the touch screen display, an area beyond the edge of the document is displayed. After the object is no longer detected on or near the touch screen display, the document is translated in a second direction until the area beyond the edge of the document is no longer displayed.