08014094 is referenced by 180 patents and cites 36 patents.

A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of data tracks. Data is read from one of the data tracks to generate a read signal, and a quality metric is generated in response to the read signal. When the quality metric exceeds a first threshold, a defect is detected in at least part of the data track. When the quality metric exceeds a second threshold different than the first threshold, the data track is reread to regenerate the quality metric, and when the quality metric exceeds the second threshold at least twice, the defect is detected.

Title
Disk drive expediting defect scan when quality metric exceeds a more stringent threshold
Application Number
12/551207
Publication Number
8014094 (B1)
Application Date
August 31, 2009
Publication Date
September 6, 2011
Inventor
Ming Jin
Lake Forest
CA, US
Assignee
Western Digital Technologies
CA, US
IPC
G11B 27/36
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