License Moving Apparatus for Secure Media Transfer
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Solution Overview
Problem
Existing content distribution systems face challenges in transferring license information from one recording medium to another, limiting user convenience, as existing techniques require simultaneous movement of content and license, which is not feasible for isolated license transfer.
Innovation Solution
A program and apparatus that decode and rewrite license information from one recording medium to another, using a server device to facilitate the transfer of encoded license information between secure and non-secure media, improving convenience by enabling standalone license movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the MOVE function of CPRM is used to transfer content and license together, then content security is maintained, but license information cannot be transferred independently
Solution Approach 1:
The patent segments the transfer process into two independent operations: content transfer and license transfer. The license information is extracted from the content package and handled separately through dedicated input/output interfaces, allowing independent license movement without requiring content transfer.
Solution Approach 2:
The license information is extracted from the bundled content-license package and separated into an independent transferable entity. The license input interface specifically receives license information alone, extracting it from the original package structure to enable standalone license transfer.
2Ease of operation
If license information is stored in portable recording media, then user convenience is improved, but license transfer between media is not supported
Solution Approach 1:
The patent implements universal license transfer capability across different recording media types. The license input interface can receive license information from various sources (portable media, server), and the license output interface can write to different media formats, creating a multi-functional transfer system.
Solution Approach 2:
The content reproduction apparatus serves as an intermediary device between the source license storage and destination media. It receives license information through the license input interface, processes it, and writes it to the target medium through the license output interface, mediating the transfer between different media types.
3Productivity
If encoded license information is transferred without decoding, then transfer efficiency is improved, but license compatibility with different user IDs is compromised
Solution Approach 1:
The patent performs preliminary decoding of the encoded license information to extract the plaintext license data before rewriting it with new user identification. This preliminary action enables the license to be adapted to different user IDs while maintaining transfer efficiency through batch processing.
Solution Approach 2:
The patent replaces the mechanical copy-paste approach with a decoding-rewriting-encoding process. Instead of directly copying encoded license data, the system decodes it to plaintext, rewrites the user identification, and re-encodes it, substituting the mechanical transfer with a transformative process that ensures compatibility.
Data Source
AI summary
A personal computer PC transmits to a server encoded user information and encoded license information, etc. contained in a secure recording medium. The server decodes the encoded license information to obtain license information. Then, the server deletes the encoded license information contained in the secure recording medium via the personal computer PC. The server decodes the decoded user information contained in a secure recording medium to obtain user information. Then, the server encodes the license information based on the user information to write the obtained encoded license information into the secure recording medium via the personal computer PC. In this manner, license information can be moved between two secure media and convenience can be improved.