Scroll Wheel Lateral Cursor Control via Interlayer Sensing
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Solution Overview
Problem
Existing pointing devices struggle with precise control of lateral cursor movement on a display screen due to the large volume and excessive swing amplitude of the scroll wheel assembly, which is exacerbated by the placement of sensing members on the peripheries of the scroll wheel.
Innovation Solution
A pointing device design featuring a scroll wheel assembly with a rotatable member covered by a soft member and a sensing member arranged between the rotatable member and the soft member, allowing for precise control of cursor movement through deformation of the soft member, which generates control signals for leftward and rightward cursor movement without increasing the device's overall volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the sensing member is arranged on bilateral sides or peripheries of the scroll wheel assembly, then the lateral movement control function is achieved, but the overall volume of the pointing device increases
Solution Approach 1:
The sensing member is integrated between the rotatable member and the soft member, merging the sensing function into the existing scroll wheel structure rather than adding separate sensing components on the periphery. This integration maintains the lateral movement control capability while reducing the overall device volume.
Solution Approach 2:
The sensing member is positioned in the radial dimension between the rotatable member and soft member, rather than on the lateral periphery. This dimensional repositioning allows the sensing function to be achieved within the existing footprint of the scroll wheel assembly, reducing the overall device volume.
2Ease of operation
If the scroll wheel assembly is laterally stirred to control cursor movement, then the cursor lateral movement is achieved, but the swing amplitude becomes excessive making precise control difficult
Solution Approach 1:
The soft member serves as an intermediary element between the user's input and the sensing member. When the user applies lateral force to the soft member, it deforms and transmits the force to the sensing member in a controlled manner, filtering out excessive swing amplitudes and enabling precise cursor control.
Solution Approach 2:
The soft member changes its deformation parameter in response to user input, transforming the lateral stirring motion into controlled displacement of the sensing member. This parameter transformation allows precise control of cursor movement while dampening excessive swing amplitudes.
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 precise control of lateral cursor movement on a display screen with reduced device volume, improving user control and reducing swing amplitude, allowing for efficient scrolling and data processing operations.
Implementation Method 1
The sensing member is actuated in response to deformation of the soft member
Data Source
AI summary
A pointing device is communicated with a computer system for controlling movement of a cursor shown on a display screen of the computer system. The pointing device includes a housing and a scroll wheel assembly. The housing has an opening therein. The scroll wheel assembly is positioned within the opening of the housing and a portion thereof protrudes away from the outer surface of the housing. The scroll wheel assembly includes a rotatable member, a soft member covering the rotatable member, and a sensing member arranged between the rotatable member and the soft member. The sensing member is actuated in response to deformation of the soft member when a lateral force is applied on the soft member, thereby controlling lateral movement of the cursor.