Device License Transfer via Signed Timeout Indicators
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Solution Overview
Problem
Existing media distribution systems restrict direct transfer of media files between client devices due to exclusive licensing, requiring users to obtain files from the media distribution system instead of sharing them directly.
Innovation Solution
A method involving device initialization, where a license request is generated for a personal media device, combined with a timeout indicator to form a device license, which is digitally signed, enabling secure and authorized sharing of media content between devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If media data files are licensed for exclusive use on a specific client electronic device, then the usage rights are secured and protected, but the media data file cannot be directly transferred to another device
Solution Approach 1:
The patent segments the licensing system into device-specific licenses and transferable license components. The device license is divided into a device identifier portion and a media license portion, allowing the media rights to be separated from the specific device constraint, enabling transferability while maintaining licensing security.
Solution Approach 2:
The patent introduces a license transfer server as an intermediary that facilitates the transfer process. This server verifies the source device's authorization, validates the target device, and coordinates the license reassignment, enabling secure transfer without direct peer-to-peer sharing.
2Reliability
If users must obtain media files from the media distribution system instead of sharing directly, then licensing control is maintained, but the process becomes time-consuming and inconvenient
Solution Approach 1:
The patent implements preliminary authorization where devices are pre-registered and authorized with the media distribution system before transfer is needed. The license server maintains a database of authorized devices, so when transfer is initiated, the system already has the necessary authorization information ready, eliminating the need for time-consuming re-authentication.
Solution Approach 2:
The license transfer server acts as an intermediary that streamlines the acquisition process by automatically handling license validation, device verification, and transfer coordination in a single integrated operation, reducing the time users would otherwise spend navigating multiple separate steps.
3Ease of operation
If direct transfer between devices is enabled, then sharing convenience is improved, but licensing compliance and security may be compromised
Solution Approach 1:
The patent introduces a license transfer server as an intermediary that mediates all transfer operations. This server verifies licensing compliance, validates device authorization, and approves transfers only when compliance conditions are met, maintaining security while enabling convenient direct transfer between authorized devices.
Solution Approach 2:
The system implements feedback mechanisms where the license transfer server continuously monitors transfer operations, verifies licensing status in real-time, and provides authorization feedback to the transferring devices. This ensures compliance is maintained throughout the transfer process while keeping the operation simple for users.
Data Source
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AI summary
A device initialization method includes generating a license request for a personal media device. A timeout indicator may be obtained for a subscription associated with the personal media device. The license request and the timeout indicator may be combined to form a device license for the personal media device. The device license may be digitally-signed to form a signed device license.