Multifunction Peripheral Storage Segmentation for Data Security

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Solution Overview

Problem

Traditional multifunction peripherals (MFPs) face security issues with shared storage units, allowing unauthorized access to private data and causing user confusion due to mixed data storage among multiple users.

Innovation Solution

A method and apparatus that divide the storage unit into user-specific areas, allowing only authenticated users to access their allocated areas, with user authentication using IDs and passwords, and dynamically allocating unallocated areas if necessary.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If a shared storage unit is used for all users, then storage space is efficiently utilized, but unauthorized access to private data occurs and user confusion increases

Engineering Contradiction:
Improvestorage space utilizationVSAvoiddata security
Core Design Contradiction:
Quantity of substanceVSReliability

Solution Approach 1:

The storage unit is divided into multiple separate user areas, with each area assigned to a specific user. This segmentation ensures that users can only access their own data while maintaining efficient storage utilization. The controller manages these divided areas by allocating specific regions to authenticated users and preventing access to other users' areas.

Inventive Principle:
Principle #1Segmentation

2Device complexity

If data of different users are mixed and stored, then storage management is simplified, but users experience confusion when using the data

Engineering Contradiction:
Improvestorage management complexityVSAvoiduser data access clarity
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

Each user area is given distinct local quality through unique identification and access control. When a user authenticates, the controller identifies their specific user area and allows access only to that localized region. This ensures that while the overall storage management remains centralized and simple, each user experiences clear, confusion-free access to their own data.

Inventive Principle:
Principle #3Local quality

3Reliability

If password authentication is implemented for each data item, then unauthorized access is partially prevented, but security is not fully ensured and system complexity increases

Engineering Contradiction:
Improvedata securityVSAvoidauthentication system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The authentication mechanism is extracted from individual data items and applied at the user area level. Instead of requiring separate passwords for each data item, the system performs single authentication at the user area boundary. The controller checks user credentials once and then manages all access control within that user's allocated area, reducing overall system complexity while maintaining comprehensive security.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentUS9015491B2Method and apparatus for managing private data in multifunction peripheral
Publication Date: 2015.04.21 HEWLETT PACKARD DEVELOPMENT COMPANY LP
  • US9015491B2 patent drawing
  • US9015491B2 patent drawing
  • US9015491B2 patent drawing

AI summary

A method and apparatus is provided for managing private data, such as a phone book, in a multifunction peripheral (MFP) used by multiple users. The method involves receiving user information and performing user authentication, and reading data stored in a user area allocated to the authenticated user in a storage unit divided into a number of user areas. Accordingly, when private data is managed in an MFP used by multiple users, by dividing a storage unit in which data is stored into a number of user areas, allocating the divided user areas to users, and allowing a user to access only a user area allocated to the user through an authentication process, the private data can be fully prevented from being accessed by other users, and it will be unlikely for a user to be confused because of other user data.