Storage media defect detection

Details Storage media defect detection Storage media defect detection

2007-12-05

2011-12-13

Simpson, Lixi C (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S053120, C369S053150, C369S053350, C369S053420, C369S059210

Reexamination Certificate

active

08077571

ABSTRACT:
Detecting a defect on a storage device is disclosed. Detecting includes receiving a signal read from a storage device, sampling the signal to obtain a set of signal samples, wherein the sampling starts at an arbitrary time, computing a defect value for a defect type using the set of signal samples, comparing the defect value with a threshold associated with the defect type, determining whether there is a defect of the defect type based at least in part on the comparison, and in the event that a defect is detected, outputting an indication associated with the defect.

REFERENCES:
patent: 5212677 (1993-05-01), Shimote et al.
patent: 6175459 (2001-01-01), Tomita
patent: 6185175 (2001-02-01), Zook
patent: 2005/0232096 (2005-10-01), Van Helvoirt et al.
patent: 2006/0133248 (2006-06-01), Ueda et al.
patent: 2008/0284630 (2008-11-01), Kikugawa et al.

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