Co-adapted Model for Devolved Handwriting Motion Recognition

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Solution Overview

Problem

Conventional textual input systems are inefficient and do not allow users to produce text at speeds comparable to speaking, as they require precise button pressing or touch-sensitive interactions.

Innovation Solution

The system uses a co-adapted machine-learning model to identify devolved sequences of handwriting motions that are simpler and less constrained by legibility criteria, allowing users to input target characters, emojis, or strings with fewer motions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional textual input systems are used, then input precision is maintained, but input speed is limited and productivity is reduced

Engineering Contradiction:
Improveinput speedVSAvoidinput efficiency
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The patent replaces conventional mechanical button-pressing or touch-sensitive interaction systems with a machine-learning-based handwriting motion recognition system. The co-adapted model processes sensor data (from cameras, depth sensors, or other input devices) to identify handwriting motions and translate them into text inputs, enabling faster input speeds while maintaining accuracy through intelligent pattern recognition rather than mechanical precision

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system changes the fundamental parameters of input detection by moving from precise spatial coordinates and pressure data (conventional typing parameters) to temporal-spatial motion patterns and sequence representations. The model analyzes the sequence, duration, and trajectory of handwriting motions to identify characters, allowing for more efficient input by leveraging temporal patterns rather than requiring pixel-perfect replication of each stroke

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If rigidly defined input systems are used, then system stability is maintained, but adaptability to user needs is reduced

Engineering Contradiction:
Improveco-adaptation capabilityVSAvoidsystem flexibility
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The co-adapted input-detection model performs self-service by automatically learning and adapting to individual user's handwriting patterns, preferences, and evolution over time. The system monitors user interactions and continuously refines its understanding of that specific user's motor patterns, eliminating the need for manual reconfiguration or programming while increasing adaptability to each user's unique needs

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system implements feedback mechanisms where the model receives feedback from sensor data, compares it against learned patterns, and adjusts its interpretation accordingly. This feedback loop enables the system to adapt to variations in user handwriting style, improve recognition accuracy, and evolve its detection capabilities based on actual usage patterns, thereby increasing versatility without requiring complex manual adjustment

Inventive Principle:
Principle #23Feedback

3Productivity

If precise handwriting motions are required, then input accuracy is maintained, but the number of motions increases and productivity decreases

Engineering Contradiction:
Improvewords per minuteVSAvoidtime for handwriting motions
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent applies partial action by requiring only the essential components of handwriting motions rather than complete precise executions. The co-adapted model learns to identify characters from partial strokes or simplified motion patterns, allowing users to input text faster by not completing every stroke perfectly. The system tolerates and even prefers simplified, quicker motions over deliberate, precise handwriting, thereby reducing the time required for input while maintaining accuracy through intelligent pattern matching

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentUS20250117131A1Methods for identifying devolved sequences of handwriting motions for generating target inputs using a co-adapted input-detection model, and devices and systems therefor
Publication Date: 2025.04.10 META PLATFORMS TECHNOLOGIES LLC
  • US20250117131A1 patent drawing
  • US20250117131A1 patent drawing
  • US20250117131A1 patent drawing

AI summary

A method of identifying devolved sequences of handwriting motions is described. The method includes obtaining, via sensors of a wearable device of a computing system, data corresponding to a user attempting to perform a sequence of handwriting motions associated with one or more target inputs while wearing the wearable device. The method includes identifying, based on at least (i) the data corresponding to the user attempting to perform the sequence of handwriting motion and (ii) the one or more target inputs associated with the sequence of handwriting motions, a devolved sequence of handwriting motions to suggest to the user for inputting a respective target input of the one or more target inputs. The devolved sequence of handwriting motions is a different sequence and includes fewer handwriting motions as compared to the sequence of handwriting motions. And the method includes presenting a representation of the devolved sequence of handwriting motions.