Media Storage Structure with Multiple Encrypted Content Pieces
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Solution Overview
Problem
Existing Digital Rights Management (DRM) systems do not allow flexible purchasing or licensing of subsets of related digital content, often requiring recipients to acquire entire sets of content or forgo access to all related content.
Innovation Solution
A method for distributing a single media storage structure with multiple pieces of encrypted content, where devices receive a set of keys allowing access to specific pieces of content based on user permissions, enabling decryption and access to one or both pieces of content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a DRM system distributes related content (e.g., song and music video) as a bundled set, then content protection and rights management are simplified, but user flexibility to purchase only desired content is lost
Solution Approach 1:
The patent segments the DRM system into separate modules: a content distribution module that distributes encrypted content, a key distribution module that distributes decryption keys, and a rights management module that tracks user permissions. This segmentation allows the system to handle multiple related content items independently while maintaining overall rights management, enabling users to purchase subsets of content without requiring complete bundle licensing.
2Ease of operation
If cryptographic keys are distributed with encrypted content, then content access is enabled, but security against unauthorized access and key theft is compromised
Solution Approach 1:
The patent introduces a rights management server as an intermediary between the content distribution and key distribution processes. The server verifies user permissions, manages digital rights, and controls key release based on licensing agreements. This intermediary layer ensures that decryption keys are only distributed to authorized users while maintaining ease of content access through automated verification processes.
3Adaptability or versatility
If multiple related content items are distributed together, then content coherence and user experience are improved, but the ability to license individual items is lost
Solution Approach 1:
The patent implements dynamic licensing where the rights management system can adaptively grant access to different subsets of related content based on user preferences and licensing agreements. The system dynamically generates and distributes appropriate decryption keys for each licensed content item, allowing users to purchase individual songs, videos, or bundles as needed, rather than requiring fixed bundled licensing.
Data Source
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AI summary
There is provided a method of a user receiving permission to access media content comprising receiving a unitary media storage structure with a plurality of protected media portions, receiving from a license authority a key for each protected media portion that the user has permission to access, and using the respective key to access each protected media portion that the user has permission to access.