Radiographic Apparatus Authentication via Time-Limited Visual Codes
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Solution Overview
Problem
Existing radiographic systems face security challenges when using portable terminal apparatuses to operate radiographic apparatuses, as they can be operated outside designated rooms, leading to potential unauthorized access and authentication issues, especially with IDs, passwords, ID cards, and biometric authentication being compromised by factors like masks, gloves, age, or injuries.
Innovation Solution
A control system that includes a controlled apparatus with an authentication code generating unit and a portable terminal apparatus with a code input and transmission unit, where the controlled apparatus determines if the input code matches the generated authentication code and checks if the first period has elapsed since its generation, permitting control only if the code is valid and not expired, thereby ensuring secure operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional authentication methods (IDs, passwords, ID cards, biometric authentication) are used for portable terminal apparatus, then security can be strengthened, but authentication becomes difficult when a person wears masks or gloves, becomes old, or is wounded or injured
Solution Approach 1:
The patent replaces mechanical authentication systems (physical ID cards, biometric sensors requiring physical contact) with an optical code-based authentication system. The authentication code is displayed as a visual pattern that can be captured by a camera or imaged by the portable terminal, eliminating the need for physical interaction with authentication devices or exposure of biometric data.
Solution Approach 2:
The patent uses a visual representation (image or code pattern) of the authentication code that can be captured and transmitted. Instead of requiring the original physical authentication medium (ID card, biometric data), the system creates a visual copy that can be imaged and verified, making authentication accessible to anyone who can capture the image regardless of their physical condition.
2Adaptability or versatility
If portable terminal apparatus is used to operate radiographic apparatus, then flexibility and mobility are improved, but security risks increase as the terminal can be operated outside designated rooms
Solution Approach 1:
The system performs preliminary authentication before allowing operation of the radiographic apparatus. The portable terminal captures and transmits the authentication code in advance, and the radiographic apparatus verifies this code before permitting control. This preliminary verification ensures that only authenticated users can operate the system, regardless of their location.
Solution Approach 2:
The system implements a feedback mechanism where the portable terminal transmits the captured authentication code back to the radiographic apparatus for verification. The radiographic apparatus then provides feedback by confirming or rejecting the authentication, allowing the system to maintain security through continuous verification of the user's authorization status.
Data Source
AI summary
A control system includes a controlled apparatus and a portable terminal apparatus that controls the controlled apparatus. The controlled apparatus includes an authentication code generating unit that generates an authentication code and an authentication code output unit that outputs the generated authentication code. The portable terminal apparatus includes a code input unit that inputs a code and a code transmitting unit that transmits the input code to the controlled apparatus. The controlled apparatus further includes a determining unit that determines whether the code transmitted from the code transmitting unit is the authentication code output from the authentication code output unit and whether a first period has elapsed since generation of the authentication code and a permission unit that permits control using the portable terminal apparatus in response to determination that the transmitted code is the output authentication code and the first period has not elapsed.