Recording Medium Address Structure for High Density Storage
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Solution Overview
Problem
High density recording media face challenges in securing an address area as their capacity increases, requiring innovative solutions to efficiently record and reproduce data.
Innovation Solution
The proposed solution involves a recording medium where data is recorded in units of clusters, with each cluster containing address fields that include 32-bit address unit number (AUN) information, which includes a reserved area, layer information, and location information, along with additional flag and parity information to ensure accurate data recording and reproduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If data is recorded in units of clusters with increased capacity, then storage capacity is improved, but address area allocation becomes insufficient
Solution Approach 1:
The address structure is segmented into multiple fields including AUN (Address Unit Number), LCN (Logical Cluster Number), and PN (Physical Number) with specific bit allocations. This segmentation allows efficient addressing of large capacity storage while maintaining dedicated address spaces for different data organization levels.
Solution Approach 2:
The patent introduces a hierarchical addressing system that adds dimensional organization to the address space. By using multiple address fields (AUN, LCN, PN) that work together in a hierarchical manner, the system effectively expands the addressable space beyond what a single linear address field could provide, enabling support for high capacity storage media.
2Area of stationary object
If more address fields are added to each cluster, then address area is improved, but device complexity increases
Solution Approach 1:
The address fields are organized dynamically where AUN, LCN, and PN can be selectively used and combined based on the specific access requirements. This dynamic organization allows the system to maintain flexibility in address usage while supporting complex storage structures, reducing the effective complexity by allowing adaptive address field utilization.
Solution Approach 2:
The address fields serve multiple functions simultaneously - AUN provides cluster identification, LCN provides logical organization, and PN provides physical location mapping. This multi-functionality allows a single address structure to handle various data access patterns and storage organization schemes without requiring separate addressing mechanisms for each function.
Data Source
AI summary
A recording medium on which data is recorded in units of clusters, a method and apparatus for reproducing data on the recording medium, and a method and apparatus for recording data on the recording medium, wherein each of the clusters includes a plurality of address fields, each address field includes 32-bit address unit number (AUN) address information, and the AUN address information includes a reserved area recorded on 4 bits, layer information, recorded on 3 bits, indicating a layer on which data corresponding to the AUN address information is recorded, and location information, recorded on 25 bits, indicating a location of the data corresponding to the AUN address information. In the recording medium of the present invention, a space in which addresses are recorded is expanded, thereby securing an address area in which addresses of data can be recorded in a data structure.