DocumentCode
1550331
Title
Improving re-read strategies by waveform averaging
Author
Patapoutian, Ara ; Vea, Mathew P.
Author_Institution
Maxtor Corp., Shrewsbury, MA, USA
Volume
37
Issue
6
fYear
2001
fDate
11/1/2001 12:00:00 AM
Firstpage
3969
Lastpage
3976
Abstract
We present improved re-read strategies that try to recover data that would otherwise be lost. These strategies store the block samples at the detector input and average them with the samples obtained from succeeding re-reads. We evaluate the data reliability improvements of such schemes as a function of a weighting function that weights different reads with different importances, for both single and double retrials. Finally, we compare various schemes
Keywords
digital storage; disc drives; error correction codes; error detection codes; error statistics; probability; reliability; system recovery; conditional probability; data reliability; data reliability improvements; disk drives; error analysis; error correction coding; error detection coding; performance metric; re-read strategies; storage channels; system recovery; waveform averaging; weighting coefficients; weighting function; Automatic repeat request; Cyclic redundancy check; Decoding; Detectors; Disk drives; Error correction; Error correction codes; Intersymbol interference; Microprogramming; Throughput;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.966134
Filename
966134
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