DRM Server Document Copy Quality Control
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Solution Overview
Problem
Existing methods for preventing unauthorized copying and scanning of hardcopy documents often result in authorized users being restricted to producing low-quality second generation copies, while lacking effective control over access permissions and document distribution.
Innovation Solution
A system utilizing a digital rights management (DRM) server and connected devices to scan and match document characteristics, allowing authorized users to generate high-quality copies or electronic versions while preventing unauthorized access by determining user permissions and applying security patterns dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional copy guard technology is used to prevent unauthorized copying, then unauthorized copies are prevented, but authorized users are restricted to producing low-quality second generation copies
Solution Approach 1:
The system applies different quality levels to different copying scenarios by identifying the source document generation type. First generation copies from original documents maintain high quality, while second generation copies from already-copied documents are restricted to low quality, thereby resolving the contradiction between preventing unauthorized copying and maintaining copy quality for authorized users
Solution Approach 2:
The copy quality is dynamically adjusted based on the detected document generation type. The system transitions from static quality restriction to dynamic quality control, where authorized users receiving first generation copies can produce high-quality outputs, while other scenarios receive appropriate quality limitations
2Adaptability or versatility
If DRM system is implemented to control document access, then document distribution control is improved, but system complexity increases
Solution Approach 1:
A server acts as an intermediary between connected copying devices and the DRM system. The server handles document matching, permission verification, and electronic version distribution, thereby reducing the complexity burden on individual copying devices while maintaining comprehensive access control capabilities
Solution Approach 2:
The DRM system is segmented into multiple components: connected copying devices that perform scanning and document matching, a server that handles permission verification and electronic version management, and the DRM database that stores permission information. This segmentation distributes system complexity across multiple elements rather than concentrating it in one device
3Reliability
If security patterns are embedded in documents to prevent unauthorized copying, then copy protection is achieved, but the security patterns become conspicuous and degrade document appearance
Solution Approach 1:
The system uses invisible or inconspicuous security patterns that do not degrade document appearance. By employing patterns that are imperceptible to the human eye under normal viewing conditions, the system maintains both copy protection effectiveness and document aesthetic quality
Data Source
AI summary
A method implemented in a system including a copier or scanner connected to a digital rights management (DRM) server, which can prevent unauthorized copy or scan while allowing authorized users to obtain high quality hardcopies or scans. After the copier or scanner scans an input hardcopy document, the server determines whether the scanned document image matches any protected document in the DRM system. If a match is found, and the server determines that the user is permitted to copy or distribute the document, the server transmits an electronic version of the matched document from the DRM system to the copier or user-selected email recipients, so that the user or the email recipients can receive a high quality document. If a matched document is found but the user is not permitted to copy or distribute it, the copier or scanner deletes the scanned document image without printing or saving it.