Menu Tab Unlock Control for Password-Protected MFP Screens
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Solution Overview
Problem
Existing multifunction peripherals (MFPs) require repeated password authentication when switching between tabs, degrading operability.
Innovation Solution
A control apparatus with a locking unit that maintains a tab in an unlocked state after initial password authentication, allowing seamless transitions between menu screens without re-authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If password authentication is required for each tab selection, then security is improved, but operability deteriorates
Solution Approach 1:
The system performs preliminary action by maintaining an unlocked state flag for a selected tab after initial authentication. When a user selects a tab, the system sets the unlocked state flag to true, allowing subsequent selections of the same tab without re-authentication. This preliminary state change enables seamless transitions while maintaining security through initial authentication requirements.
2Reliability
If the control apparatus locks after initial authentication, then security is improved, but ease of operation deteriorates due to repeated authentication requirements
Solution Approach 1:
The system applies dynamics by making the locked/unlocked state changeable based on user interactions. The unlocked state flag transitions from false to true when a user selects a tab, and remains true until the user selects a different tab or the system determines a lock condition is met. This dynamic state management allows the system to adapt between security and ease of operation based on real-time user behavior.
3Reliability
If the system maintains locked state after tab switching, then security is improved, but productivity deteriorates due to repeated authentication steps
Solution Approach 1:
The system ensures continuity of useful action by maintaining the unlocked state flag across tab selections within the same session. Once a tab is selected and the unlocked state is activated, subsequent selections of the same tab continue the useful action without interruption for re-authentication. This continuous state persistence eliminates redundant authentication steps and improves operational efficiency.
Data Source
AI summary
A control apparatus includes a first display controller that displays selection areas on a display unit, a locking unit that controls the control apparatus in a locked state, a changing unit that changes the state of the control apparatus from the locked state to a released state based on input of a password in the state of the control apparatus controlled in the locked state, a second display controller that displays a second menu screen corresponding to a second selection area on the display unit based on selection of the second selection area, and a third display controller that displays the second menu screen without the input of the password in a case where the second menu screen is displayed after the change from the locked state to the released state and the first selection area is selected after the display of the second menu screen.