DRM Terminal Control via Inventory Management
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Solution Overview
Problem
Current digital rights management systems for video-on-demand services lack comprehensive protection mechanisms, particularly for high-definition content, and do not effectively revoke or exclude non-compliant playback or recording devices, leading to potential unauthorized access and reduced protective properties.
Innovation Solution
A device and method that utilize an inventory management unit to manage terminals based on usage rights metadata, selectively controlling terminals to ensure only compliant devices can play encrypted content, with a clearing house providing decryption metadata for additional security and flexible billing, and a rights management unit adapting metadata formats for secure distribution in telecommunications networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If content is provided in unencrypted form for home entertainment solutions, then ease of operation is improved, but reliability of content protection deteriorates
Solution Approach 1:
The content is pre-encrypted before distribution to terminals. The encryption is performed in advance by the content provider or rights management system, so that when the content reaches the terminal, it is already in protected form. This preliminary encryption action ensures that content protection is maintained without requiring complex user operations.
2Reliability
If content is provided in encrypted form with key information, then reliability of content protection is improved, but device complexity increases
Solution Approach 1:
The key information and decryption metadata are extracted and provided separately from the encrypted content. The terminal receives the encrypted content through one channel (e.g., optical disc or network download) and the decryption keys through another channel (e.g., authorized server or secure interface). This separation reduces the complexity burden on any single device while maintaining overall system security.
3Reliability
If digital rights management standards are implemented for high-definition content, then reliability of content protection is improved, but adaptability of system deteriorates
Solution Approach 1:
The system is designed to handle multiple content formats and delivery methods through a universal interface. The terminal device can process both optical disc-based content and network-delivered content using the same decryption and playback mechanisms. The rights management system supports various DRM standards and can adapt to different content protection schemes while maintaining a consistent user experience.
4Reliability
If comprehensive inventory management and terminal control are implemented, then reliability of content protection is improved, but device complexity increases
Solution Approach 1:
A central inventory management system and rights management server act as intermediaries between the content providers and terminal devices. These intermediary systems handle the complex tasks of tracking terminal inventories, managing decryption keys, and enforcing usage rights. The terminal devices themselves remain relatively simple, relying on the intermediary systems to perform the complex management functions.
Data Source
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AI summary
The invention relates to an apparatus and a method for securely distributing contents in a telecommunication network, where an inventory management unit (1) manages terminals (3) with at least one functional unit (4) on the basis of use rights metadata (NMD) associated with an encrypted content (VN) and a terminal actuation unit (2) actuates the terminals (3) as appropriate. In this case, the inventory management unit (1) compares the use rights metadata (NMD) with a functional unit inventory list, the terminal actuation unit (2) selectively actuating the respective terminal for a respective encrypted content if the comparison ascertains a functional unit (4) which is not enabled for the content.