Content Management Device for Copy Control Quality Preservation
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Solution Overview
Problem
The introduction of 'copy-once' control in digital broadcasting limits user convenience by converting high-quality content into lower-quality content during transfer, making it impossible to restore the original quality and leading to wasted recording capacity due to unreproducible content.
Innovation Solution
A content management device that enables the reproduction of high-quality content after transfer by temporarily disabling reproduction at the source, outputting attribute information, and allowing users to delete unnecessary content, thereby maintaining original quality and optimizing storage capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If copy-once control is implemented in digital broadcasting, then copyright protection is improved, but user convenience deteriorates due to quality loss during transfer
Solution Approach 1:
The system dynamically changes the reproduction status of source content based on transfer completion. When content is transferred to an external medium, the source content's reproduction is disabled (status changes from reproducible to unreproducible). This dynamic state management resolves the contradiction by enabling quality preservation through controlled reproduction restrictions while maintaining user convenience through automated quality selection and restoration capabilities.
2Quantity of substance
If content is converted to lower quality for transfer to external medium, then storage capacity requirements are reduced, but original quality restoration becomes impossible
Solution Approach 1:
The system performs preliminary quality selection before transfer. Users can pre-select whether to transfer high-quality or low-quality versions of content to external media. This preliminary action resolves the contradiction by allowing users to choose their quality-storage tradeoff in advance, avoiding irreversible quality loss while managing storage capacity according to their specific needs.
Solution Approach 2:
The system changes the reproduction parameter of source content based on transfer status. When content is successfully transferred, the source content's reproduction parameter changes from enabled to disabled. This parameter change resolves the contradiction by preserving original quality in the source while enabling flexible quality selection for transfer, allowing users to maintain high quality when needed while accepting lower quality for storage-constrained scenarios.
3Manufacturing precision
If high-quality content is transferred to external medium, then original quality is preserved, but storage capacity is wasted due to unreproducible content
Solution Approach 1:
The system provides feedback to users about the reproduction status of transferred content. Attribute information indicating that source content is unreproducible is output to the user, enabling informed decisions about content management. This feedback mechanism resolves the contradiction by allowing users to understand the quality-storage tradeoff and make rational decisions about whether to restore content or delete unreproducible copies, thereby optimizing storage capacity usage.
Solution Approach 2:
The system enables users to self-manage their content library by providing information about unreproducible content and allowing manual deletion decisions. Users can independently decide whether to restore high-quality source content or delete unreproducible copies based on their storage needs. This self-service approach resolves the contradiction by empowering users to optimize their own storage capacity while maintaining quality preferences.
4Manufacturing precision
If reproduction is disabled at source after transfer, then quality preservation is achieved, but user awareness of unreproducible content is lost
Solution Approach 1:
The system outputs attribute information to the user indicating that source content has become unreproducible after transfer. This feedback prevents information loss by keeping users aware of the reproduction status changes, allowing them to make informed decisions about content restoration or deletion while the system maintains quality preservation through reproduction disabling.
Data Source
AI summary
The present invention provides a content management device that enables to reproduce a content with original quality even after the content has been converted to have lower quality to be moved, and further enables to notify a user of information regarding the moved content. The content management device includes: a communication unit connected to a communication pathway and configured to output a copy of recorded content received via a communication pathway for storing on an external medium; a content control unit configured to control the output of the recorded content and disable the reproduction of the recorded content when the copy is output; and a content information output unit configured to output externally attribute information comprising at least reproduction status information.