Metadata Organization for Disc Library Storage Efficiency
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Solution Overview
Problem
As the number of discs loaded into a reproducing apparatus increases, the metadata storage space requirements grow significantly, and users face inefficiencies in finding desired audio-visual data due to the time-consuming process of browsing through accumulated metadata.
Innovation Solution
The metadata is organized into volume identifiers, with common data shared among discs in a volume and specific data stored separately, allowing for efficient storage and search by using volume labels to reference metadata, reducing redundant storage and improving search efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If metadata from multiple discs is accumulated in the reproducing apparatus, then the completeness of the disc library increases, but the storage space requirement increases and search time increases
Solution Approach 1:
The patent segments metadata into two categories: common metadata (shared across multiple discs) and disc-specific metadata (unique to each disc). By storing common metadata only once and referencing it from multiple discs, the system reduces redundant storage while maintaining complete disc library functionality.
Solution Approach 2:
Instead of storing complete metadata copies for each disc, the patent creates lightweight references or pointers to common metadata. This copying approach allows multiple discs to share the same metadata storage location, significantly reducing overall storage requirements while preserving access to complete information.
2Quantity of substance
If metadata from multiple discs is accumulated in the reproducing apparatus, then the completeness of the disc library increases, but the search time increases
Solution Approach 1:
By segmenting metadata into common and disc-specific portions, the system allows search operations to focus on disc-specific metadata first, then reference common metadata only when necessary. This segmentation reduces the amount of data that needs to be scanned during search operations.
Solution Approach 2:
The patent introduces an intermediary indexing structure that maps disc identifiers to their specific metadata locations and common metadata references. This intermediary layer enables rapid search by providing direct access paths without requiring linear scanning of all metadata, thus reducing search time while maintaining library completeness.
3Measurement precision
If complete metadata is stored for each disc, then the accuracy of search results is maintained, but the device complexity increases
Solution Approach 1:
The patent simplifies device complexity by segmenting metadata management into automated processes: identifying common metadata, separating disc-specific metadata, and creating reference structures. This segmentation transforms a complex monolithic metadata system into manageable modular components with clear management rules.
Solution Approach 2:
The system implements self-service mechanisms where metadata is automatically categorized, deduplicated, and indexed without requiring manual intervention. The reproducing apparatus autonomously manages the complexity of metadata organization, maintaining search accuracy while reducing the operational burden on users.
Data Source
AI summary
A reproducing apparatus for reproducing audio-visual data stored in a storage medium includes a storage unit which stores metadata used to search for desired audio-visual data in the audio-visual data stored in the storage medium, and a search unit which searches for the desired audio-visual data using the metadata stored in the storage unit, wherein the metadata includes a volume identifier indicating a volume comprised of a plurality of discs used to create a disc library stored in the storage unit. The metadata may further include disc information and title information common to the discs, and the search unit may create the disc library using the disc information, the title information, and the volume information, and search for the desired audio-visual data using the created disc library.