Video Audio Data Backup Segmentation Synchronization
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Solution Overview
Problem
Conventional data backup apparatuses face challenges in efficiently reproducing synchronized video and audio main program data due to the need for large free space on the HDD and prolonged data reading times from external recording media, especially when material data is stored in units of files, leading to difficulties in synchronous reproduction and re-editing.
Innovation Solution
A data backup apparatus and control apparatus that separates used and unused portions of video and audio material data based on editing information, generates connection information for positioning on an external recording medium, and interleaves data for efficient storage and reproduction, allowing for synchronous reproduction without requiring large HDD space and reducing data reading time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If material data is stored in units of files on external recording medium, then data can be sequentially written and stored, but the used portions are physically placed at positions away from each other making synchronous reproduction difficult and requiring large HDD free space
Solution Approach 1:
The patent segments material data into used portions and unused portions, and further divides used portions into video data and audio data. This segmentation allows the backup apparatus to selectively back up only necessary data components and reconstruct them in the correct sequence, enabling synchronous reproduction without requiring all original files to be loaded into HDD memory.
Solution Approach 2:
The patent introduces a new dimension of data organization by creating a backup file structure that interleaves video and audio data in temporal sequence rather than maintaining the original file-based structure. This dimensional transformation allows data to be read sequentially from external storage while maintaining synchronization, eliminating the need for random access operations that require large HDD free space.
2Adaptability or versatility
If all material data including unused portions is loaded into HDD for reproduction, then complete data is available for re-editing, but large free space is required and reading time is prolonged
Solution Approach 1:
The patent extracts and separates used portions from unused portions of material data during the backup process. When reproducing or re-editing, only the used portions need to be read from external storage, significantly reducing data reading time. The unused portions remain on external storage but are not loaded into HDD memory unless needed for additional editing operations.
Solution Approach 2:
The patent performs preliminary separation of used and unused data portions during the initial backup process. This preliminary action organizes the data structure in advance, so that during reproduction or re-editing operations, the system can directly access only the necessary used portions without needing to load entire original files, thereby reducing both HDD space requirements and data reading time.
3Ease of manufacture
If conventional sequential file writing is used, then data storage is simple, but used portions are scattered making synchronous reproduction of video and audio difficult
Solution Approach 1:
The patent merges video data and audio data into a single interleaved sequence in the backup file, organizing them by temporal order rather than by original file structure. This merging process maintains simple sequential writing to external storage while ensuring that corresponding video and audio portions are positioned adjacent to each other, enabling accurate synchronous reproduction without complex random access operations.
Data Source
AI summary
A data control apparatus includes: a separating unit for separating material data included in original video and audio files into a used portion and an unused portion, based on editing information indicating the used portion of the material data in the video and audio files, and generating first data including only the used portion and second data including only the unused portion; a connection information generation unit for generating connection information associating information about positions of the first data and the second data in the original video and audio files with information about positions of the first data and the second data on an external recording medium; and a formatting unit for arranging the first data, the second data, the connection information, and the editing information in a predetermined order, and outputting, as backup data, the first data, the second data, the connection information, and the editing information.