Non-volatile storage system compensating prior probability for low-density parity check codes
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United States of America Patent
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May 6, 2014
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app pub date -
Nov 1, 2011
filing date -
Nov 1, 2011
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Abstract
Provided in one embodiment is a nonvolatile storage system having multiple nonvolatile storage media and a controller coupled to the multiple nonvolatile storage media. The controller has a storage area configured to store management information including probability management information denoting error probability information of a unit physical area in a nonvolatile storage medium, and an error correcting circuit configured to carry out coding and decoding by a low density parity check code. The controller, in a data read process, is configured to identify based on management information an error probability, uses the identified error probability to correct the read data using the error correcting circuit.
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