Image Formation Device Policy Fallback Controller
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Solution Overview
Problem
In image formation devices managed by group policies, there is a risk of settings being unintentionally or negligently altered when management information cannot be acquired, leading to operational discrepancies from the intended policy settings.
Innovation Solution
The image formation device includes a controller and storage with separate areas for setting values and management information, where the controller sets values based on acquired management information from an external source when available, and falls back to stored management information when external acquisition is not possible, ensuring appropriate policy application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the image formation device relies on acquiring management information from an external management server, then the device can be centrally managed and controlled, but the device cannot operate with correct policy settings when the external server is unavailable
Solution Approach 1:
The device performs preliminary actions by acquiring and storing management information from the external management server in advance, before the actual operation is needed. This allows the device to have policy settings ready and available locally, so when the external server becomes unavailable, the device can continue operating with the previously acquired management information, thus resolving the contradiction between reliability and server dependency
Solution Approach 2:
The local storage area acts as an intermediary between the external management server and the policy application mechanism. Instead of directly depending on the external server for every policy application, the device uses the locally stored management information as a mediator, allowing continuous operation even when the external server is inaccessible, thereby improving reliability while maintaining a manageable storage structure
2Reliability
If the image formation device stores management information locally, then the device can operate independently when external information is unavailable, but the device may apply incorrect policies if the stored information is not updated
Solution Approach 1:
The device implements periodic action by repeatedly attempting to acquire management information from the external management server at regular intervals or upon specific triggers. This ensures that the locally stored management information is updated periodically, maintaining accuracy while allowing the device to operate independently between updates, thus resolving the contradiction between operational continuity and information accuracy
Solution Approach 2:
The device uses feedback mechanisms to monitor the availability of the external management server and the validity of stored policy information. When the server becomes available again, the device checks for updates and refreshes its local storage accordingly. This feedback loop ensures that the device maintains operational independence while preventing the application of outdated or incorrect policies, addressing both reliability and information accuracy requirements
Data Source
AI summary
An image formation device includes a controller, a storage, and an image former. The storage has a first storage area and a second storage area. The first storage area stores a setting value to be referred to during an operation of the image formation device. The second storage area stores management information to which a group policy is applied. The controller, when the management information was able to be acquired from an external portion, sets the setting value based on the acquired management information, and, when the management information was not able to be acquired from the external portion, sets the setting value based on the management information stored in the second storage area.