Handwriting Input Display Apparatus with Automatic Candidate Recognition

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Solution Overview

Problem

Current handwriting input systems require complex procedures for recognizing character strings, especially when recognition fails, leading to frequent mode switching and reduced efficiency in communication settings where time is limited.

Innovation Solution

A handwriting input display apparatus that automatically displays recommended recognition candidates for a predetermined time, allowing users to select and convert them into character strings without interrupting the input process, and reverts to displaying the original handwritten object if not selected.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If handwriting recognition is performed automatically, then character string input efficiency is improved, but recognition accuracy deteriorates when characters are difficult to read

Engineering Contradiction:

Improvehandwriting input efficiencyVSAvoidrecognition accuracy

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The system performs handwriting recognition in advance and displays candidate character strings before the user completes their input. This allows the user to see recognition results immediately and make quick corrections or selections, improving both efficiency and accuracy by providing head start on the recognition process.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system provides visual feedback by displaying multiple candidate character strings based on the handwritten input. This feedback mechanism allows users to verify recognition accuracy and select the correct character string, thereby maintaining high recognition accuracy while improving input efficiency through automatic recognition.

Inventive Principle:

Principle #23Feedback

2Reliability

If complex recognition procedures are implemented to improve accuracy, then recognition reliability is improved, but operation complexity increases

Engineering Contradiction:

Improverecognition reliabilityVSAvoidoperation complexity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The system automatically performs handwriting recognition and generates candidate character strings without requiring user intervention. This self-service approach maintains high recognition reliability through automated processing while keeping operation simple, as users only need to review and select from displayed candidates rather than navigating complex procedures.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system pre-processes handwritten input to generate recognition candidates before user review. This preliminary recognition action allows the system to perform complex analysis in the background while presenting simple selection options to the user, thereby maintaining reliability without increasing operational complexity.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If mode switching is required when recognition fails, then recognition accuracy is maintained, but time consumption increases

Engineering Contradiction:

Improverecognition accuracyVSAvoidtime for mode switching

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system merges handwritten character recognition with candidate display in a single integrated process. By combining recognition and presentation of alternatives into one step, the system maintains recognition accuracy while eliminating the need for separate mode switching operations, thereby reducing time consumption.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The system performs recognition and prepares candidate character strings in advance, before the user needs to review them. This preliminary preparation eliminates the need for subsequent mode switching or additional processing steps, maintaining accuracy while minimizing time loss.

Inventive Principle:

Principle #10Preliminary action

4Speed

If handwriting is displayed continuously without interruption, then input speed is maintained, but recognition opportunities are reduced

Engineering Contradiction:

Improvehandwriting input speedVSAvoidcharacter string conversion efficiency

Core Design Contradiction:

SpeedVSProductivity

Solution Approach 1:

The system implements periodic display of recognition candidates at appropriate intervals during handwriting input. This periodic intervention maintains overall input speed by not continuously interrupting the user, while still providing regular opportunities for character string conversion and recognition verification, thereby balancing speed with productivity.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS11250253B2Handwriting input display apparatus, handwriting input display method and recording medium storing program

Publication Date: 2022.02.15 RICOH CO LTD

AI summary

A handwriting input display apparatus causes display means to display a stroke generated by an input made by using input means to a screen as a handwritten object. The apparatus includes display control means for causing the display means to display character string candidates including a handwriting recognition candidate when the handwritten object does not change for a predetermined time. When the handwriting recognition candidate is selected, the display control means causes the display means to erase a display of the character string candidates and a display of the handwritten object, and causes the display means to display a character string object at a position where the erased handwritten object was displayed. When selection of the handwriting recognition candidate is not performed for a predetermined time and the display of the character string candidates is erased, the display control means causes the handwritten object to be kept displayed.