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Data storage with an outer block code and a stream-based inner code

  • US 8,239,725 B2
  • Filed: 10/25/2011
  • Issued: 08/07/2012
  • Est. Priority Date: 07/06/2007
  • Status: Active Grant
First Claim
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1. A method for storing data in a device having one or more memory arrays, the method comprising:

  • receiving block-coded data comprising N+y bytes of data, wherein the N+y bytes of data comprises N bytes of page data and y bytes of block-type error correction data for the page data;

    with a stream-based code coder, concatenating the N+y bytes of the block-coded data with a stream-based forward error correction technique to generate a concatenated code that is a factor z times larger in size than the N+y bytes of original block-coded data such that the concatenated code has z(N+y) bytes; and

    storing the concatenated code in the one or more memory arrays;

    wherein the one or memory arrays intrinsically has a first bit error rate, wherein with the additional forward error correction of the stream-based forward error correction technique has a second bit error rate lower than the first error rate such that the one or more memory arrays can be used to satisfy a bit error specification that would not be met by the first bit error rate.

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