Local Activation of Activatable Rights Data
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Solution Overview
Problem
Current systems for accessing protected digital content are hindered by long cycle times for entitlement management messages (EMM), requiring users to request and wait for rights data before accessing content, leading to delays and pre-emptive requests, which can stop the sale of events prematurely.
Innovation Solution
A method for local activation of activatable rights data, allowing users to store and activate rights in a 'to be activated' state, enabling descrambling of protected content without prior requests, using a security processor with a man-machine interface for activation and secure PIN code entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rights messages EMM are transmitted cyclically to terminals, then security and controlled distribution of rights data are improved, but access time and user flexibility deteriorate due to long cycle durations
Solution Approach 1:
The patent applies preliminary action by transmitting rights data in advance to terminals before the actual content broadcast. Rights messages EMM containing entitlement data are sent to terminals ahead of time, so when users want to access content, the rights data is already available locally in the terminal's memory, eliminating the need to wait for cyclic EMM transmissions during the broadcast cycle.
Solution Approach 2:
The patent segments the rights data transmission process by separating the delivery of entitlement data from the content broadcast. The EMM messages are transmitted independently in advance, and the terminal stores these rights data locally. This segmentation allows the rights data to be prepared and available without being constrained by the content broadcast schedule or cyclic transmission intervals.
2Reliability
If users must make prior requests for rights data acquisition, then controlled access and operator management are improved, but user convenience and sales flexibility deteriorate due to processing delays and premature sale stoppages
Solution Approach 1:
The patent implements self-service by enabling terminals to automatically receive and store rights data locally without requiring users to manually request or process activation. The terminal autonomously manages the entitlement data from EMM messages, and users can directly access content using the pre-delivered rights data, eliminating complex request-processing-activation workflows.
Solution Approach 2:
The system performs preliminary delivery of rights data to terminals before users need to access content. This advance delivery eliminates the need for users to make prior requests, as the rights data is already available in the terminal when content becomes available, allowing immediate access without administrative delays.
3Reliability
If EMM rights messages are sent individually to each subscriber, then security and personalized rights management are improved, but transmission time and operational complexity deteriorate due to large subscriber numbers
Solution Approach 1:
The patent applies universality by using a single cyclic EMM transmission mechanism that serves all subscribers simultaneously. The broadcast system transmits EMM messages that can be received and processed by any terminal in the network, eliminating the need for individual dedicated transmissions to each subscriber while maintaining personalized rights management through terminal-specific processing of the universal broadcast messages.
Data Source
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AI summary
The method involves receiving an activable right message e.g. Entitlement Management Message, (301), where the message includes activable right data that adopts an activated state or a to be activated state. The data in the states is usable by a safe processor e.g. smart card, or not usable by the processor to decrypt a protected digital content (308). The data is stored (302) in the to be activated state. The data is activated in the to be activated state based on a request of a user to pass the data from the to be activated state to the activated state. Independent claims are also included for the following: (1) a computer program comprising a set of instructions for performing an activable right data activating method (2) a safe processor for locally activating activable right data to access a protected digital content (3) a system for activating a right data to access a protected digital content, comprising a safe processor.