Motion Sensor Privacy Protection for Image Forming Apparatus
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Solution Overview
Problem
Multifunction printers face the challenge of unauthorized access to setting screens when users leave them unattended, as existing technologies do not effectively secure the settings without compromising user convenience.
Innovation Solution
An image forming apparatus equipped with a motion sensor, a login-logout processor, and an on-hold setting receiver that automatically saves or cancels partially entered settings, and switches the screen to a secure mode when the user is not detected, preventing unauthorized access while maintaining user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the setting screen is left open when the user leaves, then user convenience is maintained, but security is compromised as unauthorized persons can peek at the setting screen
Solution Approach 1:
The system dynamically changes the display state based on real-time motion detection. When motion is detected, the setting screen remains visible for convenience. When no motion is detected, the system automatically switches to a secure state, creating a dynamic response that adapts to user presence and resolves the contradiction between convenience and security.
Solution Approach 2:
The motion sensor provides continuous feedback about user presence to the control unit. This feedback mechanism enables the system to automatically adjust its behavior - maintaining the setting screen when the user is present and securing it when absent - thereby resolving the contradiction without requiring manual user intervention.
2Object-affected harmful factors
If the system automatically switches the setting screen when the user is not detected, then security is improved, but user convenience deteriorates as partially entered settings may be lost
Solution Approach 1:
The system performs preliminary actions by automatically saving the current setting screen state before switching to the secure state. This preliminary save operation ensures that partially entered settings are preserved, eliminating the risk of data loss while maintaining the security switch functionality.
Solution Approach 2:
The system provides a cushioning mechanism by storing the setting screen content in memory before the secure state transition. This beforehand preparation acts as a safety buffer that prevents loss of user input, cushioning against the potential harm of setting loss while enabling secure switching.
3Ease of operation
If the system stores and restores setting values, then user convenience is improved, but device complexity increases
Solution Approach 1:
The system creates a simple copy of the setting screen data in memory for restoration purposes. This copying approach enables the restore functionality with minimal complexity, as it only requires storing and retrieving data structures without complex processing or additional hardware components.
Data Source
AI summary
An image forming apparatus, includes: an image generator; a motion sensor; a login-logout processor; a display; a console; a memory; an on-hold setting receiver that receives a setting to either hold or cancel a set value not completely entered, when the motion sensor is not able to detect the user; and a controller that controls the image generator, the motion sensor, the login-logout processor, the display, the console, the memory, and the on-hold setting receiver. The controller causes the memory to store the set value not completely entered and switches a setting screen if the on-hold setting receiver is set to hold the setting not completely entered when the motion sensor is not able to detect the user while the display displays the setting screen, and cancels the set value not completely entered and switches the setting screen if the on-hold setting receiver is set to cancel the setting not completely entered.