Optical Media License Binding via Controller ID
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Solution Overview
Problem
The digitalization of audio visual media content has led to widespread unauthorized dissemination and use, depriving providers of economic benefits, as existing technologies struggle to balance widespread dissemination with effective protection against piracy.
Innovation Solution
A system and method for portably binding license rights to content stored on optical media, using encryption and unique identifiers to ensure that content can only be played back with authorized decryption keys, allowing secure distribution and playback while preventing unauthorized use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If digital media content is made widely accessible and easily disseminated, then the ease of operation and user convenience improve, but unauthorized use and piracy increase, causing loss of economic benefits
Solution Approach 1:
The patent introduces a license server as an intermediary between content distributors and playback devices. The license server manages decryption keys and authorization, mediating access to digital content. This allows widespread dissemination of encrypted content while controlling unauthorized use through centralized key management and authorization protocols.
Solution Approach 2:
The patent replaces physical media protection mechanisms with digital encryption and licensing systems. Instead of relying on physical security features of optical media, the system uses cryptographic encryption of content and decryption keys managed by license servers, enabling both wide digital dissemination and controlled access.
2Object-generated harmful factors
If encryption and license management systems are implemented to prevent piracy, then protection against unauthorized use improves, but device complexity and system requirements increase
Solution Approach 1:
The patent segments the protection system into separate functional components: content encryption, license server management, playback device authorization, and decryption. This modular segmentation allows each component to be optimized independently and distributed across different systems, reducing overall complexity while maintaining comprehensive protection.
Solution Approach 2:
The license server provides self-service authorization by automatically managing decryption keys and granting access rights based on licensing terms. Playback devices automatically authenticate and obtain necessary decryption keys without manual intervention, reducing the operational complexity for users while maintaining strong protection.
Data Source
AI summary
There is provided a method for use by a playback system to play back encrypted content associated with a first globally unique identifier (ID). The method includes storing an encrypted content in a memory being under control of a memory controller having a second globally unique ID, storing the first globally unique ID, transmitting a request from the memory controller to a license server, the request comprising the first globally unique ID, the second globally unique ID and a request for a content license to play back the encrypted content, receiving the content license enabling a right for the playback of the encrypted content, the content license including content keys and being encrypted to be decryptable according to a memory controller secret associated with the second globally unique ID, decrypting the content license, according to the memory controller secret to recover the content keys to a playback module.