Communication Data Flow Usage Rule Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current Digital Rights Management (DRM) techniques are inadequate for protecting multimedia content generated and transmitted during real-time communications between users, as they require pre-existing content references and complex license server management, failing to provide control over usage rights during live interactions.
Innovation Solution
A method and device for controlling data stream usage during communications by determining and inserting usage rules into negotiation messages, allowing users to manage actions such as recording, modification, and sharing of multimedia content, without the need for pre-existing content references or complex server management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If DRM techniques are used to protect multimedia content, then content access control is improved, but device complexity and implementation cost increase due to license server requirements
Solution Approach 1:
The patent extracts the license server management complexity from the DRM system by implementing usage rule negotiation directly in the communication protocol between terminals. This removes the centralized license server requirement while maintaining content protection capabilities through distributed rule enforcement.
Solution Approach 2:
The system enables terminals to autonomously negotiate and enforce usage rules without external license server intervention. Each terminal self-manages the verification and enforcement of usage rules embedded in communication messages, eliminating the need for centralized license management infrastructure.
2Reliability
If DRM techniques are used to protect multimedia content, then content access control is improved, but the system becomes unsuitable for real-time communication due to pre-existing content reference requirements
Solution Approach 1:
The patent transforms the static DRM model requiring pre-existing content references into a dynamic system where usage rules are negotiated in real-time during communication establishment. This enables adaptability to live communications while maintaining protection through runtime rule verification.
Solution Approach 2:
The system performs preliminary negotiation of usage rules during the communication setup phase, before actual content transmission begins. This preliminary action embeds protection mechanisms into the communication flow itself, making real-time communication compatible without requiring pre-existing content catalogs.
3Ease of operation
If usage rules are negotiated during communication parameter negotiation, then ease of operation is improved, but message complexity increases
Solution Approach 1:
The patent merges usage rule negotiation with existing communication parameter negotiation protocols. By combining these functions into a single negotiation phase, the system achieves automatic usage control without requiring separate complex messaging protocols, thus limiting the increase in message complexity.
Data Source
Figure 1~5
Figure 2
Figure 3
AI summary
The invention relates to a method for controlling the use of a data stream transmitted during a communication established between at least a transmitting device and a destination terminal. During a phase for negotiation of the parameters of the data stream of the communication, the method comprises a step of determining at least one rule for the use of the data stream of the communication and a step of inserting the at least one determined use rule into a message for negotiation of the parameters of the data stream of the communication, said message being intended to be transmitted to the destination terminal. The invention also relates to a corresponding device using said method.