Image Reading Device Screen Inhibition for Pull Scan Security
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Solution Overview
Problem
Existing multi-function printers (MFPs) with pull scan functions lack efficient mechanisms to manage screen changes and user instructions during the image reading process, leading to potential document misappropriation and process interruptions.
Innovation Solution
An image reading device with a start unit that receives external start instructions, a display unit for showing specific screens before and after image data reading, and an inhibition unit that prevents unrelated screen changes during the reading process, ensuring continuous display of relevant screens until the process is complete.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display unit changes screens during the image reading process, then the user interface becomes more flexible and responsive to other operations, but the user cannot continuously monitor the reading status and documents become vulnerable to misappropriation
Solution Approach 1:
The inhibition unit is activated in advance at the start of the image reading process to prevent screen changes before they can occur. This preliminary action ensures that the reading status screen remains displayed throughout the entire reading process, allowing continuous monitoring while preventing document misappropriation.
Solution Approach 2:
The inhibition unit acts as an intermediary between the screen change processes and the reading status display. It selectively blocks unrelated screen changes while allowing the reading status information to remain visible, thus mediating between user interface flexibility and document security requirements.
2Adaptability or versatility
If the system allows screen changes during reading, then other processes can be accessed, but the reading process may be interrupted and user awareness of ongoing tasks is lost
Solution Approach 1:
The inhibition unit is activated before the reading process begins to preemptively prevent any screen changes that could interrupt the reading. This ensures the reading process completes without interruption while still allowing flexibility after reading concludes.
Solution Approach 2:
The system segments the operational timeline into distinct phases: during the reading process, screen changes are inhibited to ensure completion; after reading completes, the inhibition is lifted to allow other processes. This temporal segmentation resolves the contradiction between flexibility and interruption prevention.
3Speed
If multiple processes are allowed to change screens simultaneously, then system responsiveness improves, but process management complexity increases and reliability decreases
Solution Approach 1:
The inhibition unit serves as a control intermediary that manages screen change requests during the reading process. It provides a clear yes/no decision mechanism for each screen change request, simplifying process management while maintaining system responsiveness for authorized operations.
Solution Approach 2:
The screen change inhibition is dynamic rather than static - it is active only during the reading process and automatically deactivates when reading completes. This dynamic control allows high responsiveness when needed while reducing management complexity when the inhibition is not active.
Data Source
AI summary
An image reading device includes: a reading unit that reads image data of a document; a communication unit that communicates with an external apparatus; a start unit that receives a start instruction transmitted from the outside through the communication unit and starts the reading unit; a display; a first screen display unit that displays a first screen on the display before the reading unit starts; a second screen display unit that displays a second screen on the display after the reading unit reads the image data; a start instruction receiving unit that enables the start unit to receive the start instruction during the display of the first screen; and an inhibition unit that inhibits a process which involves a screen change and is not related to a process of reading the image data, while the first screen is displayed.