Image Processing Device Storage Segmentation for Security-Speed Trade-off
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Solution Overview
Problem
Digital multi-functional devices face delays in processing urgent data due to the time-consuming process of invalidating image data stored in hard disk devices, which persistently keep job data until it is no longer required and then compulsively delete it, affecting security and efficiency.
Innovation Solution
An image processing device and method that allows suspension of invalidation operations by directing and permitting suspension through a certified user input, enabling immediate resumption of data processing without completing the deletion process, thus preventing data reproduction and maintaining security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If compulsive deletion of image data is performed to ensure security, then security is improved, but processing speed and productivity deteriorate due to time-consuming invalidation operations
Solution Approach 1:
The patent segments the image data storage area into multiple regions (first storage area and second storage area) with different security levels. The first storage area stores image data that requires invalidation for security, while the second storage area stores image data that can be reused without invalidation. This segmentation allows the system to maintain security for sensitive data while improving overall processing speed by allowing faster access and reuse of data in the second storage area.
2Reliability
If compulsive deletion of image data is performed to ensure security, then security is improved, but device complexity increases due to additional control mechanisms
Solution Approach 1:
The patent divides the storage area into multiple segments with different security requirements, allowing selective invalidation only in the first storage area while the second storage area can be freely reused. This reduces the overall complexity compared to invalidating entire storage areas, as the control mechanism only needs to manage invalidation for the first storage area.
Solution Approach 2:
Instead of performing complete invalidation of all image data storage areas, the patent applies invalidation only partially to the first storage area where security is critical. The second storage area is excluded from invalidation operations, allowing the system to achieve adequate security with reduced processing overhead and simpler control mechanisms.
3Quantity of substance
If image data is persistently kept in storage until no longer required, then storage utilization is improved, but security risks increase due to prolonged data retention
Solution Approach 1:
The patent segments the storage system into a first storage area where image data is invalidated after processing to maintain security, and a second storage area where image data can be retained and reused without invalidation. This allows the system to maintain high storage utilization by freely using the second storage area while ensuring security through invalidation in the first storage area.
Solution Approach 2:
The patent implements selective discarding of image data through invalidation in the first storage area after processing, while the second storage area allows data to be retained and recovered for reuse. This approach balances security requirements with storage utilization efficiency, as the system can recover and reuse data in the second storage area without security risks.
Data Source
AI summary
The subject invention offers data deletion operation with respect to the area storing image data for security purpose, and also offers a function for suspending the deletion operation by a specific condition so as to accept a request of processing new image data. The image processing device includes image data inputting means for inputting image data; image data storing means for storing the image data inputted by the image data inputting means; image data processing (outputting) means for processing (outputting) the image data stored in the image data storing means; image data invalidating (deleting) means for performing invalidation (deletion) of the image data stored in the image data storing means; directing means for directing cutoff of the invalidation performed by the image data invalidating means; and permitting means for permitting the cutoff of the invalidation directed by the directing means.