Multi-mode Content Wrapper for DRM Protection
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Solution Overview
Problem
Existing digital rights management (DRM) systems face challenges in preventing unauthorized access and screen capture of protected content, especially on non-trusted computing platforms, which can disrupt ephemeral content systems and violate usage rights.
Innovation Solution
The implementation of obscuration techniques that obscure part or all of the content during rendering, allowing authorized users to view content with fidelity while degrading images captured via screen capture, using a wrapper data structure to manage access and usage rights across trusted and non-trusted environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If DRM restrictions are imposed on rendering devices to prevent screen capture, then content protection is improved, but device functionality and user freedom are degraded
Solution Approach 1:
The patent applies different quality levels of content rendering to different contexts: high-quality unobscured rendering for authorized human viewing, and low-quality obscured rendering for screen capture attempts. This local differentiation allows the system to protect content from unauthorized copying while maintaining full functionality for legitimate users.
Solution Approach 2:
The patent introduces an intermediary obscuration layer between the content and the screen capture process. This intermediary mechanism selectively degrades captured images without affecting the authorized user's viewing experience, thus protecting content while preserving device functionality.
2Reliability
If screen capture capabilities are disabled to prevent unauthorized copying, then DRM enforcement is improved, but user control over their device is reduced
Solution Approach 1:
The patent applies preliminary anti-action by pre-degrading the content through obscuration techniques before screen capture can occur. Instead of disabling screen capture functionality, the system proactively prevents unauthorized copying by ensuring that any captured content is already degraded and unusable for DRM violation.
3Loss of information
If obscuration techniques are applied to prevent screen capture, then content fidelity for authorized users is maintained, but captured image quality is degraded
Solution Approach 1:
The patent employs color changes and visual transformations as obscuration techniques. By dynamically altering the visual properties of rendered content (such as color shifting, pattern overlay, or visual distortion), the system maintains high fidelity for authorized users while ensuring that screen captures produce degraded, unusable images.
Data Source
AI summary
A method, apparatus, media and data structure for rendering a wrapper. The wrapper includes at least one data structure in a format that is renderable by a standard rendering engine and containing censored content comprising source content identification information. When the wrapper is opened by a standard rendering engine, the censored content is rendered. When opened by a trusted rendering engine, the source content is rendered.