Dynamic Medical Device Security Lock Management
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Solution Overview
Problem
Current security management systems for medical image diagnostic devices face challenges such as screen lock activation hindering immediate examination, inability for non-enrolled users to access the device urgently, and inefficiencies in login and logout processes, leading to security risks and operational delays.
Innovation Solution
A security management system with an authentication unit, current operator information inquiry, authority information inquiry, lock unit, and lock control unit that allows authorized users to log in, release screen locks, and manage terminal states efficiently, enabling immediate access and reducing hindrances to medical procedures while maintaining security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screen lock is activated when operating terminal is not operated for predetermined time, then security is improved, but examination or diagnosis cannot be performed immediately
Solution Approach 1:
The patent implements dynamic security management where the lock status and release permissions change based on real-time operational context. The lock control unit dynamically adjusts who can release the screen lock - during examinations, the examining physician has release authority even when locked, while maintaining security for non-examination periods. This dynamic adaptation resolves the contradiction between security and immediate availability.
Solution Approach 2:
The system performs preliminary authentication and authority verification before allowing screen lock release during examinations. The lock control unit pre-establishes the examining physician's release permission based on their login credentials and examination status, so when the screen is locked during an examination, the physician can immediately release it without full login procedures, ensuring both security and immediate availability.
2Reliability
If only logined user can release screen lock, then security is improved, but different user cannot operate device when screen is locked
Solution Approach 1:
The patent applies local quality by granting specific release permissions to specific users based on their role and current examination context. Instead of a universal rule that only the logined user can release the lock, the system locally adapts the permission structure - the examining physician receives release permission during their examination, while other users maintain standard security restrictions. This localized permission assignment balances security with operational flexibility.
3Reliability
If device is turned off or system terminated when screen is locked, then security is improved, but examination cannot be started immediately
Solution Approach 1:
The system performs preliminary authentication and establishes the examining physician's screen lock release permission before the examination begins. This preliminary action ensures that when the screen is locked during an examination, the physician can immediately release it without requiring system restart or full login procedures, thus avoiding time loss while maintaining security through pre-verified credentials.
4Reliability
If non-enrolled user cannot login, then security is improved, but urgent examination cannot be performed
Solution Approach 1:
The patent implements dynamic permission assignment where the lock control unit can grant temporary screen lock release permission to non-enrolled users during urgent examinations. The system dynamically evaluates the situation - if an urgent examination is identified and no enrolled user is available, the system temporarily relaxes the enrollment requirement for screen lock release, allowing the urgent examination to proceed while maintaining security through controlled temporary access.
Data Source
AI summary
A security management system, comprising: an authentication unit for authenticating an operator of an operating terminal in order to determine whether the operator is permitted to log in or release a lock; a current operator information inquiry unit for inquiring for login status information and current operator information; an authority information inquiry unit for inquiring for authority information regarding the operator and that regarding the current operator; a lock unit for detecting an event, where a predetermined lock condition is satisfied, in the login status to allow the operating terminal to change to a lock status, and for allowing the operating terminal to change to an operable status in response to a login instruction or an instruction for a release; and a lock control unit for transmitting the instruction for a release to the lock unit when a predetermined condition is satisfied.