Display Device Conditional Fingerprint Authentication
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Solution Overview
Problem
Conventional display devices automatically convert security-on information to security-off when a user selects it, exposing sensitive information to unauthorized individuals, as they rely solely on fingerprint recognition without additional authentication.
Innovation Solution
A display device and method that prevent fingerprint recognition from selection input when a predetermined security-on state is detected, maintaining the security state by not activating the sensor unit or matching fingerprints, thus ensuring power savings and preventing unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display device automatically converts security-on information to security-off when a user selects it, then the ease of operation is improved, but the security is worsened as sensitive information is exposed to unauthorized individuals
Solution Approach 1:
The patent introduces an intermediary authentication mechanism between the selection input and the security state conversion. Instead of directly converting security-on to security-off upon selection, the system first obtains fingerprint information as an intermediary verification step. Only when the fingerprint matches the stored information does the security state convert, thus preventing unauthorized access while maintaining ease of operation for authorized users.
2Reliability
If the sensor unit is activated to obtain fingerprint from selection input, then the security is improved, but the power consumption is worsened
Solution Approach 1:
The patent applies dynamics by making the sensor unit activation conditional rather than static. The sensor unit is activated only when specific conditions are met (e.g., when security-on information is selected), and deactivated otherwise. This dynamic activation strategy ensures security is maintained when needed while minimizing power consumption during normal operation.
3Reliability
If the fingerprint recognition process is performed for all selection inputs, then the security is improved, but the operation speed is worsened
Solution Approach 1:
The patent applies local quality by making fingerprint recognition applicable only to specific cases rather than universally. The system identifies which selection inputs correspond to security-on information and applies fingerprint recognition only to those specific cases. For other selections that do not require security verification, the process is skipped, thus maintaining security where needed while preserving operation speed for non-sensitive operations.
Data Source
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Figure 3
Figure 4a
AI summary
A display device includes a display unit configured to display an image and to sense a touch input; a sensor unit configured to sense a fingerprint from the touch input; a storage unit configured to store data; and a processor configured to control the display unit, the sensor unit, and the storage unit, wherein the processor is further configured to : detect a selection input for selecting first information, the first information having a security on state or a security off state; obtain the fingerprint from the selection input, and convert the first information from the security on state into the security off state when the obtained fingerprint is matched with a pre-stored fingerprint; and when a predetermined was detected before the first information is converted into the security off state, maintain the first information to the security on state by not obtaining the fingerprint from the selection input.