Handwriting Input Display With Hidden Strokes for Confidential Entry

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Solution Overview

Problem

Conventional display apparatuses that allow users to input information by handwriting expose confidential information to other users, compromising security.

Innovation Solution

A display apparatus that inputs handwritten data without displaying it, performing character recognition to convert handwritten input into character strings and masking the original input.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If handwritten data is displayed on the touch panel, then the user can input information by handwriting, but the confidential information input by the user can be viewed by other users

Engineering Contradiction:

Improvehandwriting inputVSAvoidconfidential information exposure

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the harmful display function from the handwriting input process. By using character recognition technology, the system captures the essential information (character strings) without displaying the original handwritten data, thus separating the input function from the display function to prevent confidential information exposure

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces character recognition as an intermediary between handwriting input and information processing. Instead of directly displaying handwritten data, the system converts it to character strings through recognition, acting as a mediator that preserves information while eliminating the harmful display of original handwriting

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If multiple users use the display apparatus in a meeting, then collaborative work is enabled, but confidential information input by one user can be viewed by other users

Engineering Contradiction:

Improvemulti-user collaborationVSAvoidinformation security

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent extracts the display function from the input process, allowing multiple users to collaborate while preventing any user from viewing another user's confidential input. The system captures handwriting as character strings without displaying the original input, maintaining security in multi-user environments

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Character recognition serves as an intermediary that enables information transfer between users without exposing confidential data. The system converts handwriting to character strings that can be processed and displayed without revealing the original input method, ensuring security during collaborative use

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20250390213A1Display apparatus, input method, and program

Publication Date: 2025.12.25 RICOH CO LTD

AI summary

A display apparatus for displaying handwritten data that is input with an input unit, wherein in a predetermined case, the display apparatus does not display the handwritten data that is input with the input unit, and receives an input of a character string converted from the handwritten data that is not displayed.