Touch Screen Navigation Indicator Magnification
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Solution Overview
Problem
Portable electronic devices with touch screen displays face challenges in user interaction due to limited screen size and space constraints, necessitating improvements in touch screen control methods to enhance usability and functionality.
Innovation Solution
A method for controlling portable electronic devices with touch screen displays involves providing a graphical user interface, detecting touch events, and using navigation indicators that move based on touch movement, allowing for scrolling and selection without additional icons or menus, utilizing a processor and touch-sensitive overlay to manage user input effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the screen size of portable electronic devices is decreased to improve portability, then the device becomes more portable and easier to carry, but the available area for user input and output devices is reduced
Solution Approach 1:
The patent combines multiple functions (display, input, navigation, scrolling) into a single touch-sensitive overlay, eliminating the need for separate physical buttons, scroll wheels, or other input devices. This merging allows the device to maintain full functionality while using a smaller screen area for user interaction.
Solution Approach 2:
The touch-sensitive overlay serves multiple functions simultaneously: it acts as a display surface, an input device for text entry, a navigation interface for scrolling through content, and a selection mechanism. This multi-functionality compensates for the reduced screen area by maximizing the utility of every pixel on the display.
2Ease of operation
If additional input devices like scroll wheels or buttons are added to improve navigation capability, then user interaction becomes more capable, but the device complexity and space requirements increase
Solution Approach 1:
The patent extracts the navigation and scrolling functions from separate physical devices (buttons, scroll wheels) and integrates them directly into the touch-sensitive overlay. This extraction eliminates unnecessary components while preserving the essential navigation capability, reducing device complexity without sacrificing ease of operation.
Solution Approach 2:
The patent replaces mechanical input devices (physical buttons, scroll wheels) with an electronic touch-sensitive overlay that detects finger movements and translates them into navigation commands. This substitution eliminates mechanical complexity while maintaining or enhancing navigation capability through software-based control.
3Volume of moving object
If the screen area is reduced to decrease device size, then portability is improved, but the precision of touch input and selection accuracy deteriorates
Solution Approach 1:
The patent implements different interaction modes and visual feedback mechanisms in different areas of the touch-sensitive overlay. When a user touches a specific region, the system provides localized feedback (highlighting, animation, or immediate response) that helps the user precisely identify the selected element, thereby maintaining selection accuracy despite the reduced overall screen area.
Solution Approach 2:
The system provides immediate visual feedback when a user touches or moves their finger across the screen. The touch-sensitive overlay detects finger movement and provides real-time feedback through visual indicators, allowing users to precisely control selection and navigation even on a smaller display. This feedback loop compensates for the reduced screen real estate by enhancing the precision of touch input through responsive visual cues.
Data Source
AI summary
A method of controlling a portable electronic device that has a touch screen display includes providing a graphical user interface on a touch screen display, detecting a touch event at a first location on the touch screen display, providing a navigation indicator in the graphical user interface in response to detecting the touch event at the first location, and in response to detecting movement of the touch event from the first location to a second location while touch contact is maintained on the touch screen display, changing the position of the navigation indicator in the graphical user interface by a distance that is greater than a distance of movement of the touch event on the touch screen display, a direction of change of position of the navigation indicator is based on a direction of movement of the touch event on the touch screen display.