Force Vector Cursor Control via Pressure Sensing
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Solution Overview
Problem
Touchpads/clickpads are inefficient for tasks requiring long cursor movements and precise gestures, as they rely on spatial mapping and require repeated movements and awkward multi-finger gestures.
Innovation Solution
A system using a force sensor and touch sensor to measure force vectors, translating force magnitude into cursor velocity and direction, allowing for efficient cursor control through pressure-based interactions, and dynamically switching between position-based and pressure-based control modes based on user input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If touchpads use spatial mapping for cursor control, then the device structure remains simple, but cursor control efficiency deteriorates for long-distance movements
Solution Approach 1:
The patent changes the control parameter from positional displacement to applied force magnitude and direction. The force sensor detects force vectors applied by the user, which are then translated into cursor velocity and movement direction, enabling more efficient long-distance cursor control without complex mechanical structures
Solution Approach 2:
The patent replaces the traditional mechanical spatial mapping system with a force sensing system. Instead of relying on finger movement across the touchpad surface, the system uses force sensors to detect applied forces and converts them into cursor motion, eliminating the need for complex mechanical tracking mechanisms
2Loss of time
If touchpads require repeated movements for long-distance cursor control, then the device structure remains simple, but user interaction time increases
Solution Approach 1:
The patent enables continuous cursor movement through sustained force application. Instead of requiring discrete repeated movements, the user applies a continuous force vector that propels the cursor across the screen in a single continuous action, significantly reducing interaction time for long-distance movements
Solution Approach 2:
The system translates force magnitude directly into cursor velocity, establishing a preliminary relationship between applied force and movement speed. This allows the cursor to immediately respond to force application with appropriate velocity, eliminating the need for incremental positioning adjustments
3Measurement precision
If touchpads use spatial mapping for precise gestures, then the device structure remains simple, but gesture precision deteriorates
Solution Approach 1:
The patent changes the measurement parameter from positional coordinates to force vector characteristics (magnitude and direction). Force sensors detect subtle variations in applied force, providing precise control for gestures such as scrolling, zooming, and navigation without requiring complex positional tracking systems
Solution Approach 2:
The patent replaces mechanical positional encoding systems with force sensing technology. The force sensors detect directional force components, enabling precise gesture recognition through force vector analysis rather than through complex mechanical position detection
4Ease of operation
If touchpads require awkward multi-finger gestures, then the device structure remains simple, but ease of operation deteriorates
Solution Approach 1:
The patent changes the input parameter from multi-finger positional gestures to single or multiple force vector inputs. Users can perform gestures by applying force in different directions and magnitudes, which are naturally interpreted by the force sensors, creating more intuitive and less awkward interaction patterns
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 more efficient cursor control for long-distance movements and precise gestures by converting force inputs into cursor velocity and direction, improving user interaction efficiency and reducing the need for repetitive movements.
Implementation Method 1
a force sensor operatively coupled to a surface, a processor, and a memory that stores code executable by the processor to: measure a force vector input by a user touch at the surface, the force vector including a magnitude and a direction
Implementation Method 2
translate the magnitude into a cursor velocity, and control movements of a cursor based on the cursor velocity and the determined direction
Data Source
AI summary
For controlling a cursor using a force vector input by a user touch, an apparatus is disclosed. A system, method, and program product also perform the functions of the apparatus. The apparatus for controlling a cursor using a force vector input by a user touch includes a force sensor operatively coupled to a surface, a processor, and a memory that stores code executable by the processor to: measure a force vector input by a user touch at the surface, the force vector including a magnitude and a direction, translate the magnitude into a cursor velocity, and control movements of a cursor based on the cursor velocity and the determined direction.