Pivoting Input Element Freewheeling for Fast Haptic Scrolling
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Solution Overview
Problem
Existing input devices, such as mouse wheels and steering wheel controls, provide insufficient feedback for users, making it time-consuming to navigate through long documents or lists, and the ratcheting action can be beneficial but not intuitive.
Innovation Solution
A method simulates a freewheeling state in input devices by detecting angular position changes and outputting a signal independent of the position, allowing continuous scrolling without actual rotation, using a magnetorheological braking device to adjust mobility based on input conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the user turns the mouse wheel many times to advance through long documents, then the user can navigate through the document, but the operation becomes time-consuming and requires constant user input
Solution Approach 1:
The system dynamically changes the friction characteristics of the mouse wheel based on the scrolling state. During inertial scrolling, the friction is reduced to allow the wheel to coast freely, while during precision positioning, friction is increased to provide tactile feedback. This dynamic adjustment enables both fast navigation and precise control without manual intervention for every movement.
Solution Approach 2:
The system provides tactile feedback through controlled friction to indicate scrolling progress and provide haptic cues to the user. The friction modulation creates perceptible resistance patterns that help users understand their navigation state and provide natural feedback for when to release the wheel for inertial scrolling versus when to maintain contact for precision control.
2Productivity
If the user increases the rotational speed of the mouse wheel to navigate faster, then the navigation speed increases, but the ratcheting action provides periodic resistance that disrupts the user experience
Solution Approach 1:
The friction characteristics are dynamically adjusted based on rotational speed. At higher speeds, the system reduces friction to eliminate ratcheting resistance and allow smooth inertial scrolling. At lower speeds or during positioning, friction is increased to provide necessary tactile feedback. This speed-dependent friction control resolves the contradiction between fast navigation and smooth operation.
3Measurement precision
If the input device provides a tactile grid for haptic feedback, then the user can control the input device more precisely, but the user must constantly reposition and apply force to navigate through long lists
Solution Approach 1:
The system dynamically modulates friction to provide tactile grid feedback only when needed for precision control, while allowing inertial coasting during transit through long lists. The friction is increased at specific angular positions to create tactile cues for item boundaries, but reduced during movement to minimize user effort. This enables precise control when necessary while maintaining ease of operation during bulk navigation.
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
Enables intuitive and efficient navigation through long lists or documents with enhanced haptic feedback, reducing user effort and errors, and providing adaptable input control.
Implementation Method 1
using a magnetorheological braking device to adjust mobility based on input conditions
Data Source
Figure 1a~1f
Figure 2a~2b
Figure 3a~3b
AI summary
The invention relates to a method for operating an input device (800) and to an input device. An input element (802) of the input device (800) is manually operated and pivoted to perform an input into the with the input device (800). A change in the angular position (837) of the input element (802) is detected by means of a sensor device (5). A signal (842) is output, which is influenced by the change in the angular position (837) of the input element (802). A signal (842) is output, which is influenced by the change in the angular position (837). A freewheeling state (850) of the pivotable input element (802) is simulated from a starting time (853). From the starting time (852), a signal (842) is output in the freewheeling state (850), which signal is independent of the angular position (837) of the input element (802).