MFP Network Interface Line Identification Overlap Control
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Solution Overview
Problem
Conventional MFPs cannot distinguish between multiple lines when the same address information is set, leading to difficulties in identifying the correct line for communication.
Innovation Solution
The MFP employs a determination unit to assess whether the network address of a sub line overlaps with that of the main line, and a control unit to disable the sub line if an overlap is detected, allowing identification of the line to be used even with the same address information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the same address information is set for multiple lines, then device complexity is reduced and ease of operation is improved, but the ability to identify and discriminate between lines is lost
Solution Approach 1:
The patent introduces a determination unit as an intermediary component that checks whether address information overlaps between main line and sub line before the control unit disables the sub line. This mediator resolves the conflict by preventing the harmful state (address overlap) from occurring, thereby maintaining both ease of operation (users can set same addresses) and reliability (line identification remains accurate through the determination mechanism)
Solution Approach 2:
The determination unit performs preliminary checking of address information overlap before the communication actually occurs. By detecting potential address conflicts in advance and preventing them through disabling the sub line, the system ensures that line identification accuracy is maintained without requiring users to manually configure different addresses, thus preserving ease of operation
2Reliability
If the sub line is disabled when address overlap is detected, then line identification reliability is improved, but device complexity increases due to addition of determination and control units
Solution Approach 1:
The determination unit and control unit are integrated into the existing network interface controller structure, allowing these components to serve multiple functions: the determination unit not only checks address overlap but also works with the control unit to manage line activation. This multi-functionality approach reduces overall device complexity while maintaining line identification reliability
3Adaptability or versatility
If both main line and sub line remain active with same address information, then adaptability is improved, but communication errors increase due to inability to identify correct line
Solution Approach 1:
The determination unit performs preliminary detection of address overlap conditions and triggers preventive action by disabling the sub line before any communication errors can occur. This preliminary anti-action eliminates the harmful effect (communication errors) while preserving adaptability, as the system can still be configured flexibly with same address information - it just prevents the problematic state from manifesting
Data Source
AI summary
An information processing apparatus which is able to identify a line to be used even if same address information is set for a plurality of lines. In the information processing apparatus, one of a wired I/F and a wireless I/F is used as a main line and the other is used as a sub line. Whether a network address of an IP address of the sub line overlaps with a network address of an IP address of the main line is determined. In a case where it is determined that the network address of the IP address of the sub line overlaps with the network address of the IP address of the main line, the sub line is disabled.