Peer-to-Peer Metadata Distribution Nodes

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Solution Overview

Problem

Current multimedia service providers face challenges in efficiently distributing metadata across peer-to-peer networks, particularly in IPTV systems, where synchronized metadata distribution is crucial for content guides and user experiences, but existing methods often result in inefficiencies and security vulnerabilities.

Innovation Solution

The proposed solution involves a peer-to-peer metadata distribution network architecture that utilizes distribution nodes to collect, track, and deliver relevant metadata to client devices, synchronizing metadata streams with content and employing multicast protocols to ensure simultaneous delivery, while also incorporating security measures to authenticate and verify user access.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional centralized metadata distribution is used, then system control is simplified, but distribution efficiency and scalability deteriorate

Engineering Contradiction:
Improvemetadata distribution efficiencyVSAvoidnetwork architecture complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent divides the centralized metadata distribution system into multiple peer-to-peer distribution nodes across the network. Each node independently collects, caches, and distributes metadata to client devices, eliminating the single-point bottleneck of traditional centralized architecture and enabling parallel distribution operations.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces intermediary distribution nodes that act as local metadata repositories between content sources and client devices. These intermediaries cache metadata locally and serve it to nearby clients, reducing direct traffic to central servers and improving distribution speed while maintaining manageable complexity through modular node design.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If metadata is distributed to all clients simultaneously, then synchronization is improved, but network bandwidth consumption increases

Engineering Contradiction:
Improvemetadata synchronizationVSAvoidnetwork bandwidth consumption
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

The patent implements location-aware and context-aware metadata distribution where distribution nodes deliver metadata selectively based on client device location, user preferences, and content relevance. This targeted approach ensures synchronization for relevant metadata while avoiding unnecessary bandwidth consumption for irrelevant content.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent employs incremental metadata distribution where nodes send only the necessary portions of metadata updates to clients rather than complete datasets. Clients receive partial updates containing only changed or relevant metadata elements, maintaining synchronization while minimizing network bandwidth usage.

Inventive Principle:
Principle #16Partial or excessive action

3Adaptability or versatility

If peer-to-peer distribution nodes are added, then distribution scalability is improved, but security vulnerability increases

Engineering Contradiction:
Improvenetwork scalabilityVSAvoidsystem security
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent implements authentication and authorization mechanisms where distribution nodes and client devices verify each other's identities before establishing metadata distribution connections. Security credentials and access rights are validated through feedback loops between nodes, ensuring that only authorized participants can join the peer-to-peer network and receive metadata.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent performs preliminary security verification and authentication before allowing peer-to-peer metadata distribution to commence. Distribution nodes pre-validate client device credentials, establish secure communication channels, and set access controls before actual metadata transfer begins, preventing unauthorized access and ensuring system security from the outset.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS8892681B2Peer to peer metadata distribution
Publication Date: 2014.11.18 AT&T INTELLECTUAL PROPERTY I L P
  • US8892681B2 patent drawing
  • US8892681B2 patent drawing
  • US8892681B2 patent drawing

AI summary

A metadata distribution node includes a memory configured to store metadata. The metadata includes description information such as a description of a segment of a content item or social commentary on the content item. The metadata distribution node further includes a processor configured to receive a user profile from a client device, identify a portion of the metadata based on the user profile, and provide the portion of the metadata to the client device.