Image Processing Device Dynamic Data Invalidation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Digital multifunctional devices face security issues when processing confidential document data, as previously stored image data remains unless overwritten or forcibly erased, and the erasure process is time-consuming, delaying new data processing.
Innovation Solution
The image processing device interrupts the invalidation process of preceding image data when new data is input, allowing it to be stored in the same memory region, and repeats the invalidation process according to a set security level to ensure data confidentiality without delaying new data processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the image data invalidation process is repeated multiple times to enhance security, then the confidentiality of image data is improved, but the processing time for new data is delayed
Solution Approach 1:
The system dynamically adjusts the invalidation process based on real-time conditions. When new image data is detected during invalidation, the system suspends the current invalidation operation and prioritizes storing the new data, then resumes invalidation afterward. This dynamic response allows the system to maintain security through repeated invalidation while adapting to time-sensitive new data requirements.
Solution Approach 2:
The invalidation process is executed periodically multiple times to ensure thorough data destruction, with the system monitoring for interruptions. Each periodic invalidation cycle can be suspended and resumed based on whether new data arrives during the cycle, allowing systematic security measures while accommodating timely data processing needs.
2Productivity
If the invalidation process is suspended to accept new data, then the processing efficiency is improved, but the security level of the preceding data may be compromised
Solution Approach 1:
The system dynamically manages the conflict between security and efficiency by monitoring the invalidation process state in real-time. When new data arrives during invalidation, the system dynamically suspends the current operation to accommodate the new data, then resumes invalidation afterward. This ensures both efficient new data processing and maintained security through subsequent invalidation cycles.
Solution Approach 2:
The system performs preliminary invalidation actions before new data arrives, ensuring that some level of security measure is already in place. When new data interrupts the process, the preliminary invalidation that occurred before the interruption still provides a baseline security level, and further invalidation occurs after the new data is stored.
3Quantity of substance
If new image data is stored in the same memory region as preceding data, then the storage efficiency is improved, but the risk of data leakage increases
Solution Approach 1:
The system performs preliminary invalidation of the memory region before storing new data. By executing the invalidation process (suspending it temporarily when new data arrives) before the new data is written, the system ensures that the memory region is cleared and safe for new data storage, preventing leakage of preceding data while maintaining efficient storage utilization.
Data Source
AI summary
A digital multifunctional device 1 comprises an image reading unit 2, a hard disk 12, an image forming unit 6 and a device control unit 8. When there is input of a new image data through the image reading unit 2 while the device control unit 8 is invalidating a preceding image data stored in the hard disk 12, the invalidation by the device control unit 8 of the preceding image data in the hard disk 12 is interrupted, and the new image data being input is utilized to invalidate the preceding image data.