Inventor
KIM YOO H
US8 patents
Patents
8 patentsUS6687078B1Feb 3, 2004
Disk drive for writing micro-jog values along the centerline of a reserved track and for writing user data offset from the centerline of a data track
WESTERN DIGITAL TECH INC150 citations98
US6525892B1Feb 25, 2003
Method of calibrating a write current-setting for servo writing a disk drive
WESTERN DIGITAL TECH INC164 citations98
US6493173B1Dec 10, 2002
Headerless disk drive comprising repeatable runout (RRO) correction values recorded at a user data rate
WESTERN DIGITAL TECH INC189 citations98
US6480349B1Nov 12, 2002
Disk drive employing a non-volatile semiconductor memory for storing read channel parameter calibrated for the disk drive used to recover disk channel parameter
WESTERN DIGITAL TECH INC174 citations98
US6545835B1Apr 8, 2003
Method and apparatus for RRO learning before and after shipping to cancel RRO in a disk drive
WESTERN DIGITAL TECH INC146 citations97
US6611393B1Aug 26, 2003
Disk drive employing field calibration based on marginal sectors
WESTERN DIGITAL TECH INC154 citations96
US6690523B1Feb 10, 2004
Disk drive for updating operating zone parameters with adapted zone parameters calibrated in the field
WESTERN DIGITAL TECH INC143 citations95
US6545830B1Apr 8, 2003
Disk drive storing test pattern in calibration sectors that are longer than user data sectors for zone parameter calibration
WESTERN DIGITAL TECH INC141 citations95