Finger-Mapped Gesture Input for Rapid Touchscreen Data Entry

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Solution Overview

Problem

Current touchscreen devices face challenges in providing a rapid and accurate method for data entry, as traditional keyboards are not portable and virtual keyboards require hand movement and precise finger placement, leading to slow and error-prone input.

Innovation Solution

A finger-mapped gesture system that allows users to input data by gesturing with fingers on a touch-sensitive surface, where each finger is assigned a region and gestures involve strokes and sweeps, enabling efficient character input without requiring precise targeting of multiple keys or regions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a conventional keyboard is used for rapid data entry, then input speed is improved, but portability deteriorates

Engineering Contradiction:

Improvedata entry speedVSAvoiddevice portability

Core Design Contradiction:

ProductivityVSWeight of moving object

Solution Approach 1:

The patent extracts the essential function of a keyboard (character input) and implements it through gesture recognition on a touch-sensitive surface, removing the physical keyboard structure entirely. This allows the device to maintain rapid data entry capabilities while achieving full portability.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the mechanical keyboard system with a touch-sensitive surface and gesture recognition system. Instead of physical key presses, users perform gestures (strokes, sweeps, circles) on the touch surface, eliminating the need for a physical keyboard while maintaining input functionality.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Weight of moving object

If a virtual keyboard is used on touchscreen devices, then portability is improved, but input speed deteriorates

Engineering Contradiction:

Improvedevice portabilityVSAvoiddata entry speed

Core Design Contradiction:

Weight of moving objectVSProductivity

Solution Approach 1:

The patent segments the input process into distinct gesture types (strokes, sweeps, circles) with specific parameters (direction, length, curvature). This segmentation allows for more efficient input methods compared to sequential key pressing, as multiple characters can be input through combined gesture parameters.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces dynamic gesture parameters (direction, length, curvature) that allow users to input characters through varied motion patterns. This dynamic approach enables faster input compared to static virtual keyboard pressing, as users can leverage natural hand movements and gesture combinations.

Inventive Principle:

Principle #15Dynamics

3Measurement precision

If virtual keyboards require precise finger placement, then input accuracy is improved, but input speed deteriorates

Engineering Contradiction:

Improvecharacter input accuracyVSAvoiddata entry speed

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

The patent allows gestures to extend beyond precise targeting requirements. Instead of requiring exact finger placement on specific virtual keys, the gesture recognition system interprets broader motion patterns (strokes, sweeps, circles) with varying parameters, reducing the precision burden while maintaining input accuracy through parameter analysis.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The system provides feedback through gesture parameter recognition, where the direction, length, and curvature of gestures are analyzed to determine the intended character. This feedback mechanism allows users to input characters through natural gestures without precise finger placement, as the system interprets the gesture parameters to identify the correct character.

Inventive Principle:

Principle #23Feedback

4Productivity

If autocorrection and autocompletion are used to improve input speed, then data entry rate is improved, but error rates worsen

Engineering Contradiction:

Improveinput rateVSAvoidinput accuracy

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The gesture-based input system is inherently more accurate due to the distinctiveness of gesture parameters (direction, length, curvature), reducing the need for autocorrection. Users can input characters more reliably through natural gestures, and the system's parameter-based recognition provides built-in accuracy without requiring post-input correction mechanisms.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS10082950B2Finger-mapped character entry systems

Publication Date: 2018.09.25 LAPP JOSEPH T

AI summary

A finger-mapped gesture system is a user interface method and apparatus for rapid data input on a touch-sensitive surface. The user gestures by holding the hand stationary relative to the surface and moving the fingers primarily by extension and flexion on the surface. Each finger gestures on a gesturing area instead of selecting among keys. Individual gestures are constructed from finger actions that each independently parameterize the gesture. In combination, the particular fingers gesturing and the parameters that the fingers gesture indicate the input that the user intends. On devices that do not directly identify fingers, fingers are identified via a finger map that, after calibration to a person's hand, associates each finger with a gesturing area. Gestures are otherwise independent of where they are performed, freeing users from having to look at their fingers to target visual elements. The system is optimized for rapid character data entry.