Adaptive Scroll Wheel with Electromagnetic Variable Force Control
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Solution Overview
Problem
Conventional computer mouse scroll wheels have fixed, pre-defined scroll steps, which can be inefficient and unintuitive for user interaction with computers, as they do not adapt to different contexts or list lengths.
Innovation Solution
An adaptive scroll wheel system that modifies the force applied to the scroll wheel based on the number of elements in a list, using a stator with an electromagnet to provide dynamic and customizable scrolling experiences, including changing ratchet steps, resistance, and stopping the scroll wheel at list ends, through processors and communication with the host computer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed pre-defined scroll steps are used, then device complexity is reduced, but adaptability to different contexts and list lengths deteriorates
Solution Approach 1:
The scroll wheel transitions from a static fixed-step mechanism to a dynamic adaptive mechanism. The stator applies variable electromagnetic forces to the rotatable member based on real-time detection of list length and scroll position, enabling the scroll wheel to automatically adjust its behavior (scroll step size, resistance, stopping points) to match the current context without requiring manual configuration or complex mechanical adjustments.
Solution Approach 2:
The system changes operational parameters (scroll step size, resistance force, stopping positions) dynamically based on detected list characteristics. The processor detects the number of elements in the list and modifies the electromagnetic force parameters applied by the stator to the rotatable member, allowing the same hardware to deliver context-appropriate scrolling behavior for lists of varying lengths and types.
2Productivity
If fixed scroll steps are used, then manufacturing precision requirements are reduced, but user interaction efficiency deteriorates
Solution Approach 1:
The patent replaces traditional mechanical scroll wheel mechanisms with an electromagnetic system. Instead of relying on fixed mechanical ratchet structures with predetermined step sizes, the system uses a stator with electromagnetic coils to generate controllable forces on the rotatable member. This substitution allows software-controlled adjustment of scroll parameters without requiring precision-machined mechanical components for each possible scroll step configuration.
Solution Approach 2:
The scroll wheel transitions from a static fixed-step mechanism to a dynamic adaptive mechanism. The stator applies variable electromagnetic forces to the rotatable member based on real-time detection of list length and scroll position, enabling the scroll wheel to automatically adjust its behavior (scroll step size, resistance, stopping points) to match the current context without requiring manual configuration or complex mechanical adjustments.
3Measurement precision
If conventional scroll wheels are used, then ease of operation is maintained, but context-dependent precision deteriorates
Solution Approach 1:
The system implements a feedback loop where the processor detects the current scroll position and the number of elements in the list, then uses this information to dynamically adjust the electromagnetic force applied by the stator to the rotatable member. This feedback mechanism enables the scroll wheel to provide context-appropriate precision (larger steps for long lists, smaller steps for short lists) while maintaining intuitive operation, as the user simply rotates the wheel without needing to understand or configure the underlying adaptive behavior.
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
Enhances user interaction by providing context-dependent scrolling speeds, precision, and feedback, allowing users to navigate lists more efficiently and intuitively without visual confirmation, improving overall user experience in various applications like gaming and document navigation.
Implementation Method 1
a stator integrated with the housing, wherein the stator is configured to apply a force to the rotatable member
Data Source
AI summary
A peripheral device with an adaptive scroll wheel can be used to provide additional control of a host computing device. A variable force is used to change friction on the adaptive scroll wheel for different situations. Examples include stopping a scroll wheel at an end of a document, changing a number of ratchet steps based on a number of items on a list, and changing scroll profiles based on application, such as a scroll profile for document processing and a scroll profile for gaming.