US Patent 7818653 Methods of soft-input soft-output decoding for nonvolatile memory

Patent 7818653 was granted and assigned to SanDisk on October, 2010 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

SanDisk

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7818653

Date of Patent

October 19, 2010

Patent Application Number

11536286

Date Filed

September 28, 2006

Patent Primary Examiner

‌

Guy J Lamarre

Patent abstract

In a nonvolatile memory system, data is read from a memory array and used to obtain likelihood values, which are then provided to a soft-input soft-output decoder. The soft-input soft-output decoder calculates output likelihood values from input likelihood values and from parity data that was previously added according to an encoding scheme.

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