G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 5/55 (2006.01) G11B 5/012 (2006.01)
Patent
CA 2365155
A mechanism for servowriting on a storage medium of a storage device. The storage device has a transducer and a servo loop for positioning the transducer with respect to the storage medium. At least one transition is written on a track of the storage medium, while servoing on other transitions previously recorded on the storage medium. A reference waveform is derived as a function of a closed loop response of the servo loop and a position error waveform. The position error waveform corresponds to one or more position errors of the transducer relative to the previously recorded transitions. The reference waveform is usable in writing subsequent tracks on the storage medium. Using the reference waveform for writing subsequent tracks provides a substantial rejection of mechanical disturbances by the servo loop.
Chainer Timothy Joseph
Schultz Mark Delorman
Webb Bucknell C.
Yarmchuk Edward John
Hitachi Global Storage Technologies Netherlands B.v.
International Business Machines Corporation
Rosen Arnold
LandOfFree
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