Fragmented Watermarked Content Stream Generation
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Solution Overview
Problem
Existing content delivery systems face challenges in preventing piracy due to inadequate security profiles on personal computers, televisions, and mobile devices, making it difficult to uniquely watermark video content across various client devices without requiring extensive modifications or support for multiple watermarking technologies.
Innovation Solution
A method involving obtaining content, watermarking it with first and second watermarks, fragmenting the watermarked versions, and generating a unique stream by combining fragments from multiple groups, allowing for unique identification and protection of content across different devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If watermarking is performed in the end client device to create unique watermarks, then content security is improved, but device complexity and implementation cost increase significantly
Solution Approach 1:
The patent segments the watermarking process into two parts: (1) the content provider embeds multiple watermarks in different versions of the content before distribution, and (2) the client device simply receives and plays back the watermarked content without requiring watermarking capabilities. This segmentation moves the complex watermarking operation from the client device to the content provider, resolving the contradiction between content security and device complexity.
Solution Approach 2:
The patent applies watermarking in advance during content preparation rather than requiring real-time watermarking at the client device. Multiple watermarked versions are created beforehand by the content provider, allowing unique identification of content sources without burdening end-user devices with watermarking technology.
2Reliability
If multiple watermarking technologies are supported across different client devices, then content protection is improved, but ease of manufacture and deployment deteriorate
Solution Approach 1:
The patent creates multiple watermarked versions of the same content with different watermarks embedded. This universal approach allows any client device, regardless of its specific capabilities, to receive and play back watermarked content. The content provider maintains control over content protection through multiple watermarked versions while devices only need basic playback functionality.
3Measurement precision
If unique watermarks are created for each customer, then piracy detection is improved, but system complexity and operational cost increase
Solution Approach 1:
The patent segments the watermarking task so that the content provider creates multiple watermarked versions with different watermarks, while the distribution system automatically manages which version each customer receives. This segmentation achieves precise piracy detection through unique watermarks without requiring complex watermarking systems in customer devices.
Solution Approach 2:
The system automatically assigns different watermarked versions to different customers without requiring manual intervention. The content provider embeds multiple watermarks in advance, and the distribution system self-manages the allocation, reducing operational complexity while maintaining precise piracy tracking capabilities.
Data Source
AI summary
The disclosure relates to processing content with watermarks to generate watermarked versions. In some aspects, each version may be different. Groups of fragments may be combined to generate a unique stream by pulling fragments from two or more of the groups of fragments. Further, fragmenting may be performed before watermarking, and fragments may be pulled and watermarked upon request.