Digital Watermarking for Secure Online Conference Content Distribution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Online conference systems lack effective control over the distribution of shared content, as attendees can easily capture and disseminate sensitive information, leading to unintended wider audiences and unauthorized sharing.
Innovation Solution
A meeting server generates digital watermarks in real-time for shared content, embedding presenter and attendee information, which are visible within the content to prevent unauthorized distribution, and uses metadata for accountability, ensuring that only authorized users can view restricted materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If shared content is distributed to all attendees without restrictions, then accessibility and collaboration are improved, but unauthorized distribution and information leaks increase
Solution Approach 1:
The patent applies local quality by embedding unique digital watermarks in the shared content that are specific to each attendee. This allows the system to maintain uniform content distribution while introducing localized identification markers that enable tracking and control of individual copies, thereby preventing unauthorized distribution while preserving accessibility.
Solution Approach 2:
The patent implements feedback mechanisms by embedding digital watermarks that provide information about the source and recipient of shared content. This feedback loop allows the system to monitor content distribution, identify unauthorized sharing, and enforce access controls based on the watermark data, thus preventing harmful distribution while maintaining open collaboration.
2Reliability
If digital watermarks are embedded in shared content, then distribution control and tracking are improved, but content processing complexity increases
Solution Approach 1:
The patent applies preliminary action by embedding digital watermarks in the shared content before distribution to attendees. This pre-processing ensures that control and tracking capabilities are built into the content from the outset, allowing for reliable distribution control without requiring complex real-time processing during the conference session.
Solution Approach 2:
The patent uses copying by creating watermarked versions of the shared content for each attendee. Instead of modifying the original content or implementing complex access control systems, the system generates multiple copies with embedded watermarks, simplifying the processing requirements while maintaining reliable distribution control.
3Measurement precision
If per-attendee watermarks are generated in real-time, then distribution tracking precision is improved, but system processing load increases
Solution Approach 1:
The patent applies segmentation by dividing the watermarking process into discrete units corresponding to each attendee. Each attendee receives content with their specific watermark embedded, allowing precise tracking of individual copies. This segmentation enables the system to achieve high tracking precision by processing watermarks in small, manageable units rather than attempting to control all content simultaneously.
Data Source
AI summary
A meeting server receives shared content from a presenter device in an online conference session with one or more attendee devices. The meeting server generates one or more digital watermarks corresponding to the one or more attendee devices. Each respective digital watermark includes an indication of the presenter device and an indication of a respective attendee device. The meeting server transmits the shared content with the respective digital watermark to the respective attendee device as part of the online conference session. The respective digital watermark is visible in the shared content displayed on the respective attendee device.