Mobile Device Tilt Navigation via Inertial Sensing
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Solution Overview
Problem
Navigating large lists of data on mobile devices is time-consuming due to the need for repetitive manual input using navigation devices like thumb wheels, especially when the desired item is not on the current page.
Innovation Solution
Incorporating a direction sensing device that measures the tilt angle of the mobile device, allowing the graphical element in the user interface to be altered based on the difference between subsequent and reference tilt angles, enabling navigation through tilting instead of continuous thumb wheel rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If manual input navigation device (thumb wheel) is used to navigate through large lists, then navigation precision is maintained, but navigation time increases significantly
Solution Approach 1:
The patent replaces the mechanical thumb wheel navigation system with an inertial sensing system that detects device tilt and acceleration. The inertial sensor measures physical movements of the device, and the processor translates these movements into navigation commands, substituting manual mechanical input with automatic sensor-based detection to reduce navigation time while maintaining control precision.
Solution Approach 2:
The patent changes the input parameter from discrete thumb wheel rotations to continuous inertial sensor measurements of device tilt and acceleration. By measuring the magnitude and direction of device movement through inertial parameters, the system can determine scroll distance and direction, enabling faster navigation through large lists by mapping physical device movement directly to navigation progress.
2Productivity
If inertial sensing is added to enable tilt-based navigation, then navigation speed increases, but device complexity increases
Solution Approach 1:
The patent makes the inertial sensor serve multiple functions: it detects device tilt for positioning, measures acceleration for motion detection, and provides feedback for navigation control. By utilizing the same sensor for multiple navigation-related purposes, the system achieves enhanced navigation speed without proportionally increasing complexity, as the sensor infrastructure is shared across different navigation functions.
Solution Approach 2:
The system uses the device's existing inertial capabilities (natural tilting and movement) as the input mechanism, requiring no additional physical navigation components. The device serves itself by using its own motion characteristics, detected through built-in inertial sensors, to control navigation, thereby increasing productivity while minimizing added complexity.
3Measurement precision
If continuous thumb wheel actuation is required to reach distant items in a list, then navigation accuracy is maintained, but user fatigue increases
Solution Approach 1:
The system performs preliminary detection of the user's intended navigation direction and distance through inertial sensor measurements before executing the scroll action. By detecting the tilt and movement pattern in advance, the system can calculate the appropriate scroll distance to reach the desired list position, allowing the user to navigate to distant items with a single deliberate gesture rather than continuous actuation, thereby reducing fatigue while maintaining accuracy.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method reduces the time and effort required to navigate through lists by allowing users to scroll through data using tilting motions, enhancing user experience and efficiency, especially for large datasets.
Implementation Method 1
the sensor measures a current tilt angle of the mobile device
Data Source
AI summary
A manual input navigation device and a sensor are utilized to manipulate graphical elements in a mobile device graphical user interface. The manual input navigation device generates an input navigation signal for altering a relative position of the graphical element in the graphical user interface, and the sensor measures a current tilt angle of the mobile device. Upon the generation of the input navigation signal, the current tilt angle is stored as a reference tilt angle. The relative position of the graphical element is altered based on the difference between the current tilt angle and the reference tilt angle.