NFC Data Security During Power Transitions in Image Formers
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Solution Overview
Problem
Image forming apparatuses with NFC devices face challenges in preventing external apparatuses from reading information when the power supply to these devices is stopped, as existing technologies do not effectively control NFC communication during power-off states.
Innovation Solution
The image forming apparatus includes NFC devices with controllers that can inhibit reading by external apparatuses during power-off states, using a central controller to manage the transition between reading enabled and disabled states, and changing IP addresses to ensure data security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If power supply to NFC devices is stopped during power-off states, then energy consumption is reduced, but external apparatuses can still read information from the NFC devices
Solution Approach 1:
The system performs preliminary action by changing the IP address of the NFC device before stopping power supply. This ensures that even if an external apparatus attempts to connect during the power-off state, it cannot read the information because the network address has already been changed, thus preventing data leakage while maintaining energy savings
Solution Approach 2:
The patent applies parameter changes by modifying the IP address parameter of the NFC device during the power transition state. This parameter change occurs before power supply is stopped, creating a state where the device is inaccessible to external apparatuses, thereby resolving the contradiction between energy conservation and data security
2Adaptability or versatility
If NFC devices remain accessible during power-off states, then communication functionality is maintained, but data security is compromised
Solution Approach 1:
The system performs preliminary action by changing the IP address before stopping power supply to NFC devices. This ensures that communication functionality is properly terminated and data security is maintained, as external apparatuses cannot connect to a device with a changed address
Solution Approach 2:
The patent applies dynamics by making the NFC device's network address dynamic and changeable during power transitions. The IP address is changed from a static state to a different value before power-off, preventing unauthorized access while allowing the device to resume normal communication functionality when powered back on
3Loss of information
If IP address is changed before power-off, then data security is enhanced, but communication interruption may occur
Solution Approach 1:
The system performs preliminary action by changing the IP address before stopping power supply, ensuring data security is established before communication is fully terminated. This sequencing minimizes communication interruption time while maintaining security
Solution Approach 2:
The patent applies the skipping principle by rapidly changing the IP address and immediately proceeding to power-off the NFC device. This rushes through the transition state quickly, minimizing the time period where communication might be interrupted while ensuring security is established
Data Source
AI summary
An image forming apparatus controls at least one proximity communication device in such a manner that an external apparatus is not capable of reading information from the at least one proximity communication device during a period in which power supply to the at least one proximity communication device is stopped.