Optical Disk Interleaved Addressing for Multi-Channel Transfer
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Solution Overview
Problem
Conventional optical disks experience reduced data transfer efficiency due to sequential address allocation in recording areas, leading to increased local seek and rotational delays during multi-channel recording and reproduction, especially when data is recorded or read in small units or with large stripe lengths.
Innovation Solution
Divide sequential recording areas into simulated zones of a predetermined size, interleaving addresses between zones to improve access control and synchronize multi-channel operations, allowing simultaneous data recording and reproduction across multiple channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If addresses are sequentially allocated to sequential recording areas, then the address allocation is simple, but the striping efficiency is reduced and data transfer efficiency decreases
Solution Approach 1:
The patent divides sequential recording areas into multiple simulated zones with interleaved addresses. This segmentation allows data to be distributed across multiple zones simultaneously during striping operations, enabling parallel access and improving data transfer efficiency while maintaining sequential area organization.
Solution Approach 2:
The patent introduces a new addressing dimension by creating simulated zones within sequential areas and implementing interleaved address allocation. This adds a hierarchical layer to the address space, allowing multi-channel striping to access different simulated zones concurrently without changing the physical sequential structure.
2Ease of manufacture
If data is recorded alternately in small units in sequential recording areas, then the recording is simple, but local seek and rotational delays occur frequently reducing data transfer speed
Solution Approach 1:
By dividing sequential areas into simulated zones and allocating interleaved addresses, the patent enables recording operations to span multiple zones simultaneously. This reduces the frequency of local seeks and rotational delays by distributing data access across multiple zones rather than alternating within a single sequential area.
Solution Approach 2:
The patent pre-organizes recording areas into simulated zones with interleaved address schemes before data recording. This preliminary structuring allows multi-channel striping to access pre-distributed zones in parallel, avoiding the need for frequent seek operations during actual data transfer.
3Ease of manufacture
If data is divided into large units for striping, then striping operation is simplified, but striping is not performed in some parts or not at all when data size is small reducing data transfer speed
Solution Approach 1:
The patent creates multiple simulated zones within sequential areas, providing finer granularity for striping operations. This allows small data sets to be effectively distributed across multiple zones, enabling striping to be performed even when data size is small, thereby maintaining high data transfer speeds.
Solution Approach 2:
The simulated zone structure allows the striping system to dynamically adapt to different data sizes. By providing a hierarchical address space with multiple zones, the system can efficiently utilize striping for both small and large data sets, optimizing data transfer performance across various scenarios.
Data Source
AI summary
The present technology relates to an information processing device and method, a recording medium, and a program, which can improve a data transfer speed. In the recording medium, a recording area is divided into a plurality of simulated zones and a set of the plurality of simulated zones composes a simulated zone group. Then, an address is set to each area in the simulated zones so that the addresses are interleaved between the simulated zones composing the simulated zone group. By interleaving the addresses between the simulated zones in this manner, a local seek operation or a rotational delay can be reduced and the data transfer speed can be improved when recording or reproducing data to the recording medium in more than one channel at the same time. The present technology can be applied to an optical disk.