Rights Object Transfer Between Device and Portable Storage

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Solution Overview

Problem

Existing Digital Rights Management (DRM) technologies do not provide adequate methods for safely transferring and copying Rights Objects (ROs) between devices and portable storage devices, nor do they effectively handle errors that occur during these transfers.

Innovation Solution

A method and device for securely transferring ROs between a device and a portable storage device, involving installation, withdrawal, and error recovery processes, using message requests and responses to ensure integrity and confidentiality, with modules for transmission, reception, and error recovery.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If DRM encrypts digital content and requires a predetermined license, then digital content protection is improved, but the ability to safely transfer rights between devices deteriorates

Engineering Contradiction:
Improvedigital content protectionVSAvoidrights transfer capability
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent implements a copying mechanism for Rights Objects between devices. When a user requests to transfer content to a portable storage device, the system creates a copy of the RO from the first device to the second device. This copy mechanism enables rights transfer while maintaining security through controlled duplication rather than direct sharing of original licenses.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent introduces a rights object management system as an intermediary between devices and digital content. This intermediary manages the creation, transfer, and validation of ROs between different devices, enabling secure rights transfer without requiring direct device-to-device license sharing. The intermediary ensures that each device receives proper authorization through controlled RO distribution.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If unlimited access to digital content is allowed, then ease of operation is improved, but digital content security deteriorates

Engineering Contradiction:
Improvecontent access convenienceVSAvoiddigital content security
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent implements dynamic rights management where access permissions are not static but can be transferred and modified. The RO system allows rights to be dynamically allocated to different devices based on user actions. When content is transferred to a portable device, the RO is copied to that device, creating dynamic access rights that adapt to the new device context while maintaining security constraints.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent applies local quality by device-specific rights allocation. Each device receives ROs tailored to its specific context and capabilities. The rights are not universally applied across all devices but are locally optimized for each device's storage capacity, processing capabilities, and security features, enabling convenient access while maintaining appropriate security levels for each device.

Inventive Principle:
Principle #3Local quality

3Device complexity

If no error handling is implemented during RO transfer, then device complexity is reduced, but transfer reliability deteriorates

Engineering Contradiction:
Improvetransfer process simplicityVSAvoidtransfer success rate
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent implements preliminary error checking and validation before RO transfer operations. The system performs preliminary checks to ensure the portable storage device is properly connected, has sufficient space, and is authorized to receive the content. These preliminary actions prevent transfer failures and ensure reliability without adding significant complexity to the user-facing interface.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent incorporates feedback mechanisms during RO transfer operations. The system continuously monitors the transfer process and provides feedback on the status of operations. If errors occur during transfer, the system receives feedback about the error condition and can take corrective actions such as retrying the transfer, notifying the user, or rolling back changes to maintain data integrity.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS9152772B2Device and portable storage device which are capable of transferring rights object, and a method of transferring rights object
Publication Date: 2015.10.06 SAMSUNG ELECTRONICS CO LTD
  • US9152772B2 patent drawing
  • US9152772B2 patent drawing
  • US9152772B2 patent drawing

AI summary

A device and a portable storage device which are capable of transferring a rights object (RO) and a method of transferring an RO are provided. The method includes enabling a device to transmit an installation request message to a portable storage device for installing a copy of an original RO present in the device in the portable storage device, enabling the device to install the copy of the original RO in the portable storage device, and enabling the device to receive an installation response message indicating that the copy of the original RO has been successfully installed in the portable storage device from the portable storage device.