07725800 is referenced by 35 patents and cites 35 patents.

Two levels of error correction decoding are performed using first and second level decoders. A composite code formed by combining an inner component code and an outer component code can be used to decode the data and correct any errors. Performing two level decoding using a composite code allows the size of the inner parity block to be reduced to a single Reed-Solomon symbol while keeping a good code rate. The first level decoder generates soft information. The soft information can indicate a most likely error event for each possible syndrome value of the inner component code. The soft information can also include error metric values for each of the most likely error events. The second level decoder generates corrected syndrome values based on the soft information using the outer component code. The most likely trellis path that corresponds to the corrected syndrome values is then selected.

Title
Decoding techniques for correcting errors using soft information
Application Number
11/198945
Publication Number
7725800 (B2)
Application Date
August 5, 2005
Publication Date
May 25, 2010
Inventor
Bruce A Wilson
San Jose
CA, US
Hideki Sawaguchi
Sunnyvale
CA, US
Jongseung Park
Rochester
MN, US
Travis Oenning
Rochester
MN, US
Yuan Xing Lee
San Jose
CA, US
Ksenija Lakovic
San Jose
CA, US
Richard Leo Galbraith
Rochester
MN, US
Shaohua Yang
San Jose
CA, US
Agent
Steven J Cahill
Assignee
Hitachi Global Stroage Technologies Netherlands
NL
IPC
H03M 13/03
H03M 13/00
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