Techniques for detecting and correcting errors using...

Details Techniques for detecting and correcting errors using... Techniques for detecting and correcting errors using...

2007-06-12

2007-06-12

Dildine, R. Stephen (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S762000

Reexamination Certificate

active

10817421

ABSTRACT:
Techniques for detecting and correcting burst errors in data bytes formed in a two-level block code structure. A second level decoder uses block level check bytes to detect columns in a two-level block code structure that contain error bytes. The second level decoder generates erasure pointers that identify columns in the two-level block structure effected by burst errors. A first level decoder then uses codeword check bytes to correct all of the bytes in the columns identified by the erasure pointers. The first level decoder is freed to use all of the codeword check bytes only for error byte value calculations. The first level decoder does not need to use any of the codeword check bytes for error location calculations, because the erasure pointers generated by the second level decoder provide all of the necessary error locations. This techniques doubles the error correction capability of the first level decoder.

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Vivek Mehta, “Error Correction for Magnetic Storage Devices”, ECE 1392: Integrated Circuits for Digital Communications.
IBM Almaden Research Center, “Signal Processing/Integrated Sector Format-Error Correction Code”.

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