Display-Based Hidden Handwriting Input for Confidential Text
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Solution Overview
Problem
Conventional display apparatuses that allow multiple users to input information by handwriting face issues with confidentiality, as handwritten information can be viewed by others, compromising sensitive data like passwords.
Innovation Solution
A display apparatus that inputs handwritten data without displaying it, performing character recognition and conversion to prevent visibility of the input information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If handwritten data is displayed on the touch panel for input, then the ease of operation is improved, but the security of confidential information deteriorates
Solution Approach 1:
The patent segments the input process into two distinct phases: a private input phase where handwriting is captured without display, and a public conversion phase where recognized text is displayed. This segmentation allows the system to maintain both ease of input (through handwriting recognition) and security (by not displaying the actual input strokes), resolving the technical contradiction between operational convenience and information protection.
Solution Approach 2:
The patent introduces an intermediary component - the handwriting recognition system - that acts as a mediator between the user's handwriting input and the display output. This intermediary converts private handwriting strokes into public text representations without displaying the original input, thereby enabling easy input while preventing information leakage to other users.
2Adaptability or versatility
If multiple users can view the display panel, then the adaptability is improved, but the security of confidential information deteriorates
Solution Approach 1:
The patent applies local quality by making the display content user-specific and context-dependent. Each user sees only their own converted text output, while the raw handwriting input remains hidden from all other users. This localized display quality allows multiple users to share the same physical display panel while maintaining individual confidentiality, resolving the contradiction between multi-user adaptability and information security.
3Productivity
If handwritten input is processed through character recognition, then the productivity is improved, but the device complexity increases
Solution Approach 1:
The patent applies preliminary action by performing handwriting recognition and text conversion in advance, before the user completes their input. The system continuously processes handwriting strokes as they are input, converting them to text representations that can be displayed immediately. This preliminary processing enables high productivity through efficient input conversion while managing complexity by performing recognition operations in the background during the input process rather than as separate complex steps.
Data Source
AI summary
A display apparatus 2 for displaying handwritten data that is input with an input unit 2500, wherein in a predetermined case, the display apparatus 2 does not display the handwritten data that is input with the input unit 2500, and receives an input of a character string converted from the handwritten data that is not displayed.