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Disk drive compensating for radial phase change of repeatable position error due to servo writing from spiral tracks |
Donald Brunnett |
2011-11-15 |
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Disk drive controlling a voice coil motor during an emergency unload |
Ashok K. Desai, Robert P. Ryan |
2009-06-16 |
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Method for writing repeatable runout correction values to a magnetic disk of a disk drive |
Robert J. McNab |
2007-12-04 |
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Servo writing a disk drive using correction values that attenuate phase error propagation |
Robert J. McNab |
2007-11-20 |
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Disk drive having a servo control system optimized for faster determination of repeatable runout correction values and related method |
Li Yi |
2007-03-27 |
| 7095579 |
Disk drive employing momentum based unload during power failure |
Robert P. Ryan, Ashok K. Desai, Jenghung Chen, John R. Agness, Terry C. Dawson |
2006-08-22 |
| 7046472 |
Method and apparatus for self servowriting of tracks of a disk drive using an observer based on an equivalent one-dimensional state model |
Robert L. Cloke, Vinay K. Agarwal |
2006-05-16 |
| 6999267 |
Method for iteratively determining repeatable runout cancellation values in a magnetic disk drive |
Zhi Wang |
2006-02-14 |
| 6999263 |
Method and apparatus for self servowriting of tracks of a disk drive using a servo control loop having a two-dimensional weighted digital state compensator |
Robert L. Cloke, Vinay K. Agarwal |
2006-02-14 |
| 6975480 |
Method for determining repeatable runout cancellation values in a magnetic disk drive using filtering |
Raffi Codilian, Vinay K. Agarwal |
2005-12-13 |
| 6963465 |
Method for preventing radial error propagation during self-servowriting of tracks in a magnetic disk drive |
Robert J. McNab |
2005-11-08 |
| 6937420 |
Determining repeatable runout cancellation information using PES information generated during self servo-writing operations |
Robert J. McNab |
2005-08-30 |
| 6924959 |
Reducing estimation period for repeatable runout errors in a disk drive |
Robert J. McNab, David D. Nguyen, John Yin Kwong Li |
2005-08-02 |
| 6924960 |
Timing compensation in a self-servowriting system |
Robert L. Cloke |
2005-08-02 |
| 6924961 |
Method and apparatus for self servowriting of tracks of a disk drive using an observer based on an equivalent one-dimensional state model |
Robert L. Cloke, Vinay K. Agarwal |
2005-08-02 |
| 6826006 |
Method for recursively determining repeatable runout cancellation values in a magnetic disk drive |
Russ A. Quisenberry |
2004-11-30 |
| 6819518 |
Method and apparatus for self servowriting of tracks of a disk drive using a servo control loop having a two-dimensional digital state compensator |
Robert L. Cloke, Vinay K. Agarwal |
2004-11-16 |
| 6693764 |
Method and disk drive for improving head position accuracy during track following through real-time identification of external vibration |
Edgar D. Sheh, Vinay K. Agarwal |
2004-02-17 |