Live Event Multimedia Watermarking for Significant Segment Protection
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Solution Overview
Problem
Existing digital watermarking methods for multimedia content do not effectively protect significant segments of live events, such as goals in a soccer match, due to random application and latency issues in distribution systems, making unauthorized redistribution difficult to prevent.
Innovation Solution
A method that dynamically identifies and applies watermarks to selected portions of multimedia content during live events using latency in distribution systems to enhance protection, employing a detection unit to identify significant segments and a trigger unit to generate a watermark signal for the user device to apply, ensuring robustness and complexity in unauthorized copy prevention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If digital watermarking is applied randomly to multimedia content, then the content is protected against unauthorized redistribution, but significant segments of live events are not effectively protected
Solution Approach 1:
The patent applies watermarking in advance to significant segments of live events before they are redistributed. The system identifies important moments (goals, penalties, key plays) and pre-watermarks them with device-specific identifiers, so that when unauthorized redistribution occurs, the source can be traced. This resolves the contradiction by moving from random post-hoc watermarking to targeted pre-emptive watermarking of critical content.
Solution Approach 2:
The patent applies different watermarking strategies to different parts of the content. Significant segments receive enhanced protection with device-specific watermarks, while non-critical portions use standard protection. This local differentiation ensures that the most valuable content (significant segments) receives the strongest protection, effectively resolving the issue of insignificant random watermarking.
2Reliability
If watermarking is applied to protect live event content, then unauthorized redistribution is deterred, but latency in distribution systems reduces protection effectiveness
Solution Approach 1:
The system performs watermarking operations in advance during the content distribution process, before the content reaches the user device. By embedding watermarks during the initial distribution phase rather than attempting real-time watermarking at the point of redistribution, the system overcomes latency issues and ensures protection is already in place when content is delivered.
Solution Approach 2:
The patent creates watermarked copies of the content with embedded identifiers during the distribution process. These pre-watermarked copies are then distributed to user devices, allowing the system to trace unauthorized redistribution without requiring real-time processing during the actual content delivery, thus bypassing latency constraints.
3Reliability
If complex watermarking schemes are used to protect content, then reverse engineering becomes more difficult, but device compatibility and ease of use are reduced
Solution Approach 1:
The patent varies watermarking parameters (such as watermark strength, position, and encoding) based on the device type and content characteristics. This creates sufficiently complex watermarks that are difficult to reverse engineer, while the parameter variations are managed through automated device profiling, preventing the system from becoming overly complex for users.
Solution Approach 2:
The system automatically profiles devices and configures appropriate watermarking parameters without requiring user intervention. The complexity of managing multiple watermarking schemes is handled by the system itself through automated device characterization and parameter selection, maintaining ease of use while implementing sophisticated protection.
Data Source
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AI summary
A method is disclosed for protecting a multimedia content distributed by a content service to a user device, the multimedia content being related to a live event, wherein the method comprises, during the live event: identifying a significant segment of the live event; generating a trigger signal associated with the significant segment; at the user device, on the basis of the trigger signal, generating a marking comprising information identifying the user device; and, at the user device, applying the marking to a selected portion of the multimedia content, the selected portion corresponding to the significant segment of the live event.