ECC Encoding Structure for Multi-Layer Disc Compatibility Control
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Solution Overview
Problem
Conventional apparatuses designed for existing information storage media struggle to accurately record or reproduce data from new multi-layer information storage media with higher density, leading to potential errors or data loss due to unfamiliarity with the new standard.
Innovation Solution
The proposed solution involves encrypting a portion of the information in the first ECC block before second ECC-encoding, ensuring that conventional apparatuses without the new standard cannot correctly read or write data from disks using the new standard, thereby preventing erroneous data correction or reproduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a new multi-layer information storage medium with higher density is developed, then storage capacity is improved, but compatibility with conventional apparatuses deteriorates
Solution Approach 1:
The patent changes the parameters of the data encoding format by introducing a new structure with different field arrangements, byte orders, and encoding schemes. This allows the new multi-layer storage medium to achieve higher storage capacity while the changed parameters ensure that conventional apparatuses cannot properly read or write the data, thus preventing compatibility issues.
Solution Approach 2:
The patent converts the potential harm of incompatibility into a beneficial feature by designing the new encoding format specifically to be unreadable by conventional apparatuses. This ensures that the new high-capacity storage medium is exclusively usable with apparatuses that support the new standard, preventing erroneous data correction or reproduction by older systems.
2Ease of operation
If conventional apparatuses attempt to read data from new multi-layer storage media, then data accessibility is improved, but data accuracy deteriorates due to error correction failures
Solution Approach 1:
The patent changes the error correction parameters by using different ECC algorithms, code rates, or correction capabilities in the new encoding format. This ensures that while data is accessible to both new and conventional apparatuses, the conventional apparatuses cannot accurately correct errors because their error correction parameters do not match the new format's requirements.
3Adaptability or versatility
If data is encrypted to prevent conventional apparatuses from accessing new storage media, then compatibility control is improved, but device complexity increases
Solution Approach 1:
The patent segments the data encoding process into distinct parts: a new encoding format for high-capacity data storage and a separate encryption layer for compatibility control. This segmentation allows the system to maintain high storage capacity while adding security without requiring complete redesign of the entire encoding system, thus managing complexity through modular design.
Data Source
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AI summary
A method of encoding information and a method of decoding information, and an apparatus to perform one or both methods, and an information storage medium on which to store the information, the method of encoding the information including encrypting data between two ECC-encoding operations, and the method of decoding the information including decrypting data between two ECC-decoding operations.