Method and apparatus for decoding multiword information

Details Method and apparatus for decoding multiword information Method and apparatus for decoding multiword information

2007-10-09

2007-10-09

Lamarre, Guy (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S769000

Reexamination Certificate

active

10711586

ABSTRACT:
A method for decoding multiword information comprises multiple steps. In step (a), a multiword information cluster, e.g., ECC, including high protective codewords, e.g., BIS, and low protective codewords, e.g., LDC, is provided. In step (b), the high and low protective codewords are stored into a first memory, e.g., DRAM. In step (c), the high protective codewords are decoded to generate high protective word erasure indicators showing whether decoding errors occur. In step (d), the high protective word erasure indicators are stored into a second memory, e.g., SRAM. In step (e), the low protective codewords are decoded. In the meanwhile, an erasure bit for a low protective codeword is marked by finding high protective codewords close to the low protective codeword in the multiword information cluster and looking up the high protective word erasure indicators of the high protective codewords close to the low protective codeword.

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