Handwriting Input Apparatus Angle-Aware Stroke Rotation
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Solution Overview
Problem
Current handwriting input systems struggle to accommodate different user settings and orientations, leading to incorrect recognition of handwritten characters when users write at various angles relative to the device.
Innovation Solution
A handwriting input apparatus that identifies and adjusts for the angle of the user's pen input, allowing for correct recognition by associating pen ID with angle information and internally rotating the stroke data to match the device's orientation, enabling proper identification of characters written at different angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the system uses a fixed recognition method for handwritten input, then the recognition process is simple, but the recognition accuracy deteriorates when users write at various angles
Solution Approach 1:
The system dynamically adjusts the recognition coordinate system based on the detected pen orientation angle. When a user writes at a specific angle, the system rotates the coordinate system to match that angle, transforming the handwritten strokes into a standardized orientation for accurate recognition. This dynamic adaptation allows the system to maintain high recognition accuracy across various writing angles without requiring multiple fixed recognition methods.
Solution Approach 2:
The system changes the parameter of coordinate system orientation based on the pen angle detection. By detecting the angle at which the user holds the pen and transforming the stroke coordinates accordingly, the system adapts the recognition parameters to match the user's writing style, thereby improving recognition accuracy without significantly increasing system complexity.
2Adaptability or versatility
If the system provides multiple function menus for pen operations and editing, then the functionality is comprehensive, but the number of操作步骤 increases
Solution Approach 1:
The system automatically detects the pen orientation angle and applies the appropriate coordinate transformation without requiring user intervention. The system self-adjusts the recognition parameters based on the detected pen angle, eliminating the need for users to manually select recognition modes or adjust settings, thereby maintaining comprehensive functionality while reducing operational steps.
Solution Approach 2:
The system provides visual feedback by displaying the detected pen angle and the transformed coordinate system orientation. This feedback mechanism allows users to understand how their writing angle affects recognition, enabling them to write more naturally while the system automatically adapts, thus reducing the need for multiple manual adjustment steps.
3Measurement precision
If the system requires users to follow a specific writing orientation, then the recognition accuracy is high, but the ease of operation deteriorates
Solution Approach 1:
The system dynamically rotates the coordinate system to match the user's pen orientation, allowing users to write at any angle while maintaining high recognition accuracy. The coordinate transformation adapts in real-time based on the detected pen angle, eliminating the need for users to conform to a fixed writing orientation.
Solution Approach 2:
Instead of requiring the user to adapt their writing to a fixed coordinate system, the system inverts the approach by adapting the coordinate system to the user's writing orientation. The recognition coordinates are transformed based on the pen angle, allowing natural writing while maintaining accurate recognition.
Data Source
AI summary
A handwriting input apparatus includes processing circuitry configured to cause control data with respect to an input device to be stored in association with identification information of the input device received from the input device; and reflect the control data associated with the identification information of the input device received from the input device in stroke data that is handwritten on the basis of a position of the input device in contact with a touch panel and displayed, and display information based on the stroke data on a display unit.