Handwriting Recognition on Limited Display Screens
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Solution Overview
Problem
Existing electronic devices struggle with accurately recognizing handwriting input, particularly when characters are overlapped, leading to errors due to noise from fingertip or pen tip contact and limited screen size.
Innovation Solution
An electronic device with a processor configured to receive user touch input in a handwriting area, output successive input strokes, determine stroke groups, recognize characters, and move recognized characters to an output area, allowing continuous handwriting input without hand movement and reducing errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If handwriting input is performed by moving the hand across the screen, then continuous writing is possible, but noise occurs due to unintentional contact of fingertip or pen tip
Solution Approach 1:
The screen is divided into a handwriting area and an output area. The handwriting area is further segmented into multiple character input regions arranged in a grid pattern, allowing users to write characters in discrete locations rather than continuously moving across the screen, thereby reducing noise from unintentional contact.
2Area of stationary object
If the screen size is limited, then portability is improved, but handwriting input is restricted due to insufficient space
Solution Approach 1:
The system utilizes the vertical dimension of the screen by arranging multiple character input regions in a grid pattern both horizontally and vertically. This allows users to input multiple characters in sequence within a limited screen area, effectively increasing the handwriting input capacity without requiring a larger display.
3Quantity of substance
If multiple characters are overwritten on a limited screen, then more information can be displayed, but it becomes difficult to distinguish and separate the characters
Solution Approach 1:
The handwriting area is segmented into multiple distinct character input regions arranged in a grid. Each region is designed to accommodate one character, providing clear spatial boundaries that facilitate automatic separation and recognition of individual characters even when multiple characters are input in sequence on a limited screen.
4Measurement precision
If handwriting recognition processes all strokes sequentially, then accuracy is maintained, but recognition speed decreases due to unnecessary operations
Solution Approach 1:
The system performs preliminary classification of strokes by identifying whether they belong to the same character or different characters based on their spatial locations in the grid-patterned character input regions. This preliminary grouping allows the recognition system to process strokes more efficiently by reducing unnecessary sequential analysis while maintaining accuracy.
Data Source
AI summary
According to certain embodiments, an electronic device may include a display, a memory, and a processor operatively connected to the display and the memory. The processor may be configured to, while receiving user's touch input in a handwriting area of the display, the user's touch input comprising successive input stokes: output the successive input strokes in the handwriting area on the display; determine a first stroke group including some of the successive input strokes, to determine a first character corresponding to the first stroke group, to output the first stroke group in an output area adjacent to the handwriting area on the display, to determine a second stroke group including at least another input stroke received after the some of the successive input strokes, to determine a second character corresponding to the second stroke group, and to output the second stroke group in the output area, move the first stroke group to on one side of the second stroke group on the display.