Access Controller for Secure Content Sharing Across Terminals

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Solution Overview

Problem

Existing information processing systems lack efficient control mechanisms for accessing and managing content across multiple terminals, particularly in collaborative environments where access rights and temporal constraints are critical.

Innovation Solution

An information processing apparatus with an access controller that issues and manages PIN-CODEs for accessing icons and content, allowing access only when the content is opened on a first terminal and within predetermined time slots, while ensuring secure access rights management across connected terminals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If access control mechanisms are implemented to secure content across terminals, then security is improved, but device complexity increases

Engineering Contradiction:

ImprovesecurityVSAvoidaccess control mechanism complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent introduces a server as an intermediary component that manages access control between terminals and content. The server stores access control information and mediates access requests, preventing direct complex control logic from being embedded in each terminal device. This resolves the contradiction by centralizing security management externally while keeping individual terminals relatively simple.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent moves access control logic from the terminal dimension to the server dimension. Instead of implementing complex access control mechanisms within each terminal, the system shifts the control plane to a separate server layer, allowing terminals to remain simple clients while security management occurs in a different operational dimension.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Measurement precision

If real-time access control is implemented to allow content access only when opened on first terminal, then access control precision is improved, but information loss increases due to synchronization requirements

Engineering Contradiction:

Improveaccess control timing precisionVSAvoidsynchronization information loss

Core Design Contradiction:

Measurement precisionVSLoss of information

Solution Approach 1:

The system implements feedback mechanisms where the server continuously monitors the state of content on the first terminal and uses this feedback to control access on the second terminal. When content is opened or closed on the first terminal, this state information is fed back to the server, which then adjusts access permissions accordingly. This ensures precise timing-based access control while maintaining synchronization across terminals.

Inventive Principle:

Principle #23Feedback

3Reliability

If strict access control is implemented to prevent unauthorized access, then security is improved, but ease of operation deteriorates due to multiple verification steps

Engineering Contradiction:

ImprovesecurityVSAvoidcontent access convenience

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The system performs preliminary actions by pre-establishing access control rules and relationships between terminals and content before actual access attempts. The server pre-configures which terminals can access which content under what conditions, so that when access is needed, the verification is based on pre-established rules rather than requiring complex real-time decisions. This reduces operational friction while maintaining security.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11556663B2Information processing apparatus and non-transitory computer readable medium storing information processing program

Publication Date: 2023.01.17 FUJIFILM BUSINESS INNOVATION CORP

AI summary

An information processing apparatus includes an access controller that performs control for enabling a content to be accessed on a second terminal in a case where an icon storing the content is presented and the content is opened in a first terminal.