Content Receiver Dynamic Copy Time Management
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Solution Overview
Problem
Current content delivery systems restrict copying and moving of digital content to external storage media, limiting user convenience and failing to manage usage time periods effectively, as they do not allow copying of content with export licenses to other media or manage usage time periods when content is moved.
Innovation Solution
A content receiver apparatus that allows users to set copy allowable times for exported content, consuming export licenses and managing usage time limits, enabling copying and moving of content with designated rights to other media while maintaining copyright protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If content is copied to external storage medium without restriction, then user convenience is improved, but copyright protection is weakened
Solution Approach 1:
The patent implements dynamic copy time management where the system adapts copy restrictions based on license type. Playable license allows copying during playback period, while purchase license allows copying during both playback and non-playback periods. This dynamic approach enables flexible copyright management that balances user convenience with rights holder protection.
Solution Approach 2:
The patent changes the parameter of copy time restriction based on license type. For playable license, the copy time is restricted to playback period only. For purchase license, the copy time is extended to include both playback and non-playback periods. This parameter change resolves the contradiction by providing different levels of convenience while maintaining appropriate copyright protection for each license type.
2Reliability
If content with copy time restriction is copied to external medium, then copyright protection is maintained, but user convenience deteriorates
Solution Approach 1:
The system dynamically adjusts copy permissions based on the relationship between current time and playback period. During playback period, copying is allowed for playable license. During non-playback period, copying is restricted for playable license but allowed for purchase license. This dynamic behavior provides user convenience when appropriate while maintaining copyright protection.
Solution Approach 2:
The patent changes the copy time parameter based on license type and timing conditions. For playable license during playback period, copy time equals current time (allowing copy). For playable license during non-playback period, copy time is restricted. For purchase license, copy time is extended to include non-playback periods. This resolves the contradiction by providing convenient copying when copyright allows it.
3Ease of operation
If content is moved without copying time management, then user convenience is improved, but usage time period management is lost
Solution Approach 1:
The patent performs preliminary determination of copy time before executing the move operation. The system determines whether copying is allowed by checking the relationship between current time and playback period, and by verifying the license type. This preliminary action ensures usage time period information is preserved while allowing convenient movement when appropriate.
Solution Approach 2:
The system provides feedback to the user about copy permissions before executing the move operation. The determination unit informs whether the move is allowed based on license type and timing, preventing loss of usage time period information while maintaining user convenience when copying is permitted.
Data Source
AI summary
A content receiver comprises: an acceptance unit for accepting a designation of a recording medium to which contents are to be output; a license information acquiring unit for acquiring output license information describing the output requirements of the contents; and an output unit for outputting the contents to the designated recording medium. The output license information includes usage time limit information indicating the time limit of using the contents in an output destination. The output unit acquires the usage time limit information from the output license information for the contents, and sets the acquired usage time limit information to a management information storing area in the designated recording medium, thereby managing the time period of using the contents in the recording medium even if the copyright protection of the recording medium, which is an export destination, has a function to manage the time period of using the contents.