Handwriting Correction Calculator for Overlapping Stroke Coordinates
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing inductive digitizer systems face challenges in accurately processing handwritten documents, particularly when the stylus locus deviates from the displayed line, leading to character overlap, and require costly and weight-increasing modules for stylus inclination feedback, making calibration cumbersome across different usage environments.
Innovation Solution
An electronic apparatus with a display processor and correction calculator that calculates and applies correction directions and quantities based on recognizable handwritten characters to correct stylus coordinates, allowing for real-time display and storage of handwritten documents as time-series information, enabling effective handling of overlapping characters without the need for additional stylus modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If calibration is performed for each usage environment, then the accuracy of handwriting input is improved, but the ease of operation deteriorates due to the troublesome calibration process
Solution Approach 1:
The system pre-calculates and stores correction values for multiple usage environments (sitting position, lying position, held state, placed state) before actual handwriting input occurs. When a user writes, the system automatically selects and applies the appropriate pre-calculated correction values based on the current environment, eliminating the need for users to perform calibration procedures manually.
2Measurement precision
If a module for performing communication with the stylus is added to feed back inclination of the stylus, then the accuracy of handwriting input is improved, but the device complexity and cost increase
Solution Approach 1:
The patent extracts and eliminates the need for complex stylus communication modules and inclination sensing hardware. Instead of adding feedback mechanisms to the stylus, the system uses software-based correction that processes handwriting data after input, removing the harmful complexity while preserving the beneficial accuracy improvement through algorithmic correction.
Solution Approach 2:
The patent replaces the mechanical/hardware-based stylus inclination feedback system with a software-based correction system. Instead of using physical sensors and communication modules in the stylus to detect and feedback inclination, the system uses image processing and coordinate correction algorithms to achieve the same accuracy improvement without the mechanical complexity.
3Measurement precision
If a module for performing communication with the stylus is added to feed back inclination of the stylus, then the accuracy of handwriting input is improved, but the weight of the stylus increases
Solution Approach 1:
The patent removes the need for weight-increasing components such as inclination sensors, communication modules, and additional batteries in the stylus. By using software-based correction instead of hardware-based feedback, the stylus can remain lightweight while still achieving accurate handwriting input through post-processing coordinate correction.
Data Source
AI summary
According to one embodiment, an electronic apparatus includes a display processor, and a correction calculator. The display processor is configured to display strokes corresponding to coordinates of loci of contact points on a display. The correction calculator is configured to calculate a correction direction and a correction quantity to correct a coordinate, by using a position of a first handwritten character recognizable from the strokes and a position of a second handwritten character recognizable from the strokes.