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Redundant memory structure using bad bit pointers

  • US 6,868,022 B2
  • Filed: 03/28/2003
  • Issued: 03/15/2005
  • Est. Priority Date: 03/28/2003
  • Status: Expired due to Term
First Claim
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1. A method for correcting an error, the method comprising:

  • (a) writing data in a first plurality of memory cells;

    (b) detecting an error in writing data in one of the first plurality of memory cells;

    (c) writing a pointer in a second plurality of memory cells, the pointer identifying which memory cell in the first plurality of memory cells contains the error;

    (d) reading the data from the first plurality of memory cells;

    (e) reading the pointer from the second plurality of memory cells;

    (f) from the pointer, identifying which memory cell of the first plurality of memory cells contains the error; and

    (g) correcting the error.

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