Data storage device encoding and interleaving codewords to improve trellis sequence detection
First Claim
Patent Images
1. A data storage device comprising:
- a storage medium; and
control circuitry configured to;
first encode first data into a first codeword;
second encode second data into a second codeword, wherein a first code rate of the first codeword is less than a second code rate of the second codeword;
interleave the first codeword and the second codeword to generate an interleaved codeword; and
write the interleaved codeword to the storage medium.
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Abstract
A data storage device is disclosed comprising a storage medium. First data is encoded into a first codeword, and second data is encoded into a second codeword, wherein a first code rate of the first codeword is less than a second code rate of the second codeword. The first codeword and the second codeword are interleaved to generate an interleaved codeword that is written to the storage medium.
497 Citations
36 Claims
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1. A data storage device comprising:
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a storage medium; and control circuitry configured to; first encode first data into a first codeword; second encode second data into a second codeword, wherein a first code rate of the first codeword is less than a second code rate of the second codeword; interleave the first codeword and the second codeword to generate an interleaved codeword; and write the interleaved codeword to the storage medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A data storage device comprising:
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a storage medium; and control circuitry configured to; encode first data into a first codeword; encode second data into a second codeword; execute a non-uniform interleaving of the first codeword to generate a first non-uniform interleaved codeword; execute a non-uniform interleaving of the second codeword to generate a second non-uniform interleaved codeword; execute a uniform interleaving of the first non-uniform interleaved codeword and the second non-uniform interleaved codeword to generate an interleaved codeword; and write the interleaved codeword to the storage medium. - View Dependent Claims (10, 11, 12)
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13. A method of operating a data storage device, the method comprising:
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first encoding first data into a first codeword; second encoding second data into a second codeword, wherein a first code rate of the first codeword is less than a second code rate of the second codeword; interleaving the first codeword and the second codeword to generate an interleaved codeword; and writing the interleaved codeword to a storage medium. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A method of operating data storage device, the method comprising:
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encoding first data into a first codeword; encoding second data into a second codeword; executing a non-uniform interleaving of the first codeword to generate a first non-uniform interleaved codeword; executing a non-uniform interleaving of the second codeword to generate a second non-uniform interleaved codeword; executing a uniform interleaving of the first non-uniform interleaved codeword and the second non-uniform interleaved codeword to generate an interleaved codeword; and writing the interleaved codeword to a storage medium. - View Dependent Claims (22, 23, 24)
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25. Control circuitry for use in a data storage device comprising a storage medium, the control circuitry configured to:
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first encode first data into a first codeword; second encode second data into a second codeword, wherein a first code rate of the first codeword is less than a second code rate of the second codeword; interleave the first codeword and the second codeword to generate an interleaved codeword; and write the interleaved codeword to the storage medium. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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33. Control circuitry for use in a data storage comprising a storage medium, the control circuitry configured to:
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encode first data into a first codeword; encode second data into a second codeword; execute a non-uniform interleaving of the first codeword to generate a first non-uniform interleaved codeword; execute a non-uniform interleaving of the second codeword to generate a second non-uniform interleaved codeword; execute a uniform interleaving of the first non-uniform interleaved codeword and the second non-uniform interleaved codeword to generate an interleaved codeword; and write the interleaved codeword to the storage medium. - View Dependent Claims (34, 35, 36)
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Specification