Concatenated codes for recovering stored data
First Claim
1. A system for encoding, comprising:
- one or more processors configured to;
encode user data into a first set of codewords using a first code;
generate a first set of parity information based at least in part on encoding the first set of codewords using at least a second code; and
write the first set of codewords and at least parity information associated with the first set of parity information to shingled magnetic recording storage; and
one or more memories coupled to the one or more processors and configured to provide the one or more processors with instructions.
2 Assignments
0 Petitions
Accused Products
Abstract
A method of encoding user data into a first set of codewords using a first code, generating a first set of parity information based at least in part on the first set of codewords and at least a second code, and writing at least parity information associated with the first set of parity information to shingled magnetic recording storage. A method of performing decoding on a first set of read-back signal data read back from shingled magnetic recording storage and associated with a first set of codewords, and if decoding of at least one read-back signal in the first set of read-back signal data fails, performing decoding on at least some of a second set of read-back signal data associated with a set of parity information.
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Citations
35 Claims
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1. A system for encoding, comprising:
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one or more processors configured to; encode user data into a first set of codewords using a first code; generate a first set of parity information based at least in part on encoding the first set of codewords using at least a second code; and write the first set of codewords and at least parity information associated with the first set of parity information to shingled magnetic recording storage; and one or more memories coupled to the one or more processors and configured to provide the one or more processors with instructions. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for encoding, comprising:
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encoding user data into a first set of codewords using a first code; generating a first set of parity information based at least in part on the first set of codewords using at least a second code; and writing the first set of codewords and at least parity information associated with the first set of parity information to shingled magnetic recording storage. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A computer program product being embodied in a tangible computer readable storage medium which, when executed by a computer, causes the computer to perform encoding instructions, comprising:
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encoding user data into a first set of codewords using a first code; generating a first set of parity information based at least in part on the first set of codewords using at least a second code; and writing the first set of codewords and at least parity information associated with the first set of parity information to shingled magnetic recording storage.
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16. A system for decoding, comprising:
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one or more processors configured to; generate a first set of read-back signal data associated with a first set of codewords from shingled magnetic recording storage; perform decoding on the first set of read-back signal data; and in response to a failure to decode at least one read-back signal in the first set of read-back signal data; generate a second set of read-back signal data associated with a set of parity information; and perform decoding on at least some of the second set of read-back signal data; and one or more memories coupled to the one or more processors and configured to provide the one or more processors with instructions. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method for decoding, comprising:
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generating a first set of read-back signal data associated with a first set of codewords from shingled magnetic recording storage; performing decoding on the first set of read-back signal data; and in response to a failure to decode at least one read-back signal in the first set of read-back signal data; generating a second set of read-back signal data associated with a set of parity information; and performing decoding on at least some of the second set of read-back signal data. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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35. A computer program product being embodied in a tangible computer readable storage medium which, when executed by a computer, causes the computer to perform decoding instructions, comprising:
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generating a first set of read-back signal data associated with a first set of codewords from shingled magnetic recording storage; performing decoding on the first set of read-back signal data; and in response to a failure to decode at least one read-back signal in the first set of read-back signal data; generating a second set of read-back signal data associated with a set of parity information; and performing decoding on at least some of a second set of read-back signal data associated with a set of parity information.
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Specification