Broadcast Receiver Content Segmentation for Reliable MOVE Transfer
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Solution Overview
Problem
Existing broadcast program recording methods fail to ensure seamless content transfer and playback when device power or network connections are unexpectedly disrupted during the 'MOVE' function, leading to potential content loss or unauthorized copying issues.
Innovation Solution
A broadcast program recording method that segments content into files of predetermined sizes (between 45 seconds and 1 minute) to facilitate reliable transfer and playback, even in case of power or network disconnections, while implementing the 'MOVE' function under copyright protection conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If content is transferred using the MOVE function in a single large file, then transfer efficiency is improved, but reliability deteriorates due to potential power or network disconnection causing content loss
Solution Approach 1:
The patent segments content into multiple smaller files with predetermined sizes (45-60 seconds each) before transfer. This segmentation allows the system to continue transferring remaining segments if power or network disconnection occurs, preventing loss of the entire content while maintaining reasonable transfer efficiency through batched smaller units.
2Reliability
If content is segmented into smaller files for reliable transfer, then transfer reliability is improved, but device complexity increases due to additional file management operations
Solution Approach 1:
The patent performs preliminary segmentation of content into smaller files before the transfer operation begins. By pre-segmenting the content and preparing the file structure in advance, the system reduces the complexity of real-time file management during transfer while ensuring reliability through the predetermined file size structure (45-60 seconds per file).
Solution Approach 2:
The system manages segmented files by transferring them in batches and can discard successfully transferred segments while recovering from transfer interruptions by continuing with remaining segments. This approach simplifies file management by systematically handling segments rather than managing one large file or complex real-time segmentation.
3Adaptability or versatility
If the MOVE function allows content to exist simultaneously on source and destination, then flexibility is improved, but copyright protection deteriorates due to unauthorized copying risks
Solution Approach 1:
By segmenting content into smaller files (45-60 seconds each), the system enforces copyright protection by ensuring that even if simultaneous existence on source and destination occurs, the overlapping content duration remains limited to the maximum segment size rather than allowing full content duplication. This maintains move operation flexibility while reducing unauthorized copying risk.
Data Source
AI summary
The broadcast receiver that incorporates an HDD as a recording medium and records programs on the recording medium, when recording a program on the recording medium, determines whether the program content is prohibited from being copied afterward. If it is determined that the program content is prohibited from being copied afterward, the receiver divides the program content into segments of data size falling, for example, within the range between 45 sec. and 60 sec., as time taken to play back the data at 1× speed, and stores the segments into a plurality of files, respectively. Even in case of accidental disconnection of the device power or network interface, it becomes possible to positively move content that was once recorded on a recording medium to another external device and recording medium under the conditions prescribed for copyright protection.