| 10923146 |
Data storage device employing triangle-like dither to spread track squeeze |
Guoxiao Guo, Kei Yasuna, Due H. Banh |
2021-02-16 |
| 9076490 |
Disk drive writing radial offset spiral servo tracks by reading spiral seed tracks |
Jianbin Nie, Siri S. Weerasooriya |
2015-07-07 |
| 9064537 |
Disk drive measuring radial offset between heads by detecting a difference between ramp contact |
Jianbin Nie, Brian P. Rigney |
2015-06-23 |
| 9053727 |
Disk drive opening spiral crossing window based on DC and AC spiral track error |
Jianbin Nie, Brian P. Rigney |
2015-06-09 |
| 9047901 |
Disk drive measuring spiral track error by measuring a slope of a spiral track across a disk radius |
Jianbin Nie, Siri S. Weerasooriya |
2015-06-02 |
| 8982490 |
Data storage device reading first spiral track while simultaneously writing second spiral track |
Charles A. Park, Jianbin Nie, Brian P. Rigney, Siri S. Weerasooriya |
2015-03-17 |
| 8917474 |
Disk drive calibrating a velocity profile prior to writing a spiral track |
Brian P. Rigney, Siri S. Weerasooriya, Charles A. Park |
2014-12-23 |
| 8902535 |
Disk drive adapting feed-forward compensation using iterative learning control over segments of seek length |
Jianbin Nie, Siri S. Weerasooriya |
2014-12-02 |
| 8861126 |
Disk drive detecting when head is on ramp |
Soo-Choon Kang |
2014-10-14 |
| 8665551 |
Disk drive adjusting gain and offset of BEMF velocity sensor during self writing of spiral tracks |
Brian P. Rigney, Siri S. Weerasooriya, Brandon P. Smith |
2014-03-04 |
| 8634283 |
Disk drive performing in-drive spiral track writing |
Brian P. Rigney, Charles A. Park, Scott A. Ottele, Siri S. Weerasooriya |
2014-01-21 |
| 8634154 |
Disk drive writing a sync mark seam in a bootstrap spiral track |
Brian P. Rigney, Charles A. Park, Scott A. Ottele |
2014-01-21 |
| 8498076 |
Disk drive biasing timing recovery measurements for spiral tracks based on radial location of head |
Yakov M. Lifchits, Charles A. Park |
2013-07-30 |
| 7457071 |
Locating an initial servo track in order to servo write a disk drive from spiral tracks |
— |
2008-11-25 |
| 7391583 |
Fault tolerant sync mark detection while servo writing a disk drive from spiral tracks |
Tehri S. Lee |
2008-06-24 |
| 7391584 |
Compensating for repeatable phase error when servo writing a disk drive from spiral tracks |
Yilin Cai |
2008-06-24 |
| 7068459 |
Adjusting track density by changing PES algorithm when servo writing a disk drive from spiral tracks |
Robert L. Cloke, Siri S. Weerasooriya, Tehri S. Lee, Wing Ying |
2006-06-27 |
| 6693764 |
Method and disk drive for improving head position accuracy during track following through real-time identification of external vibration |
Hemant Melkote, Vinay K. Agarwal |
2004-02-17 |
| 6614618 |
Disk drive with feed-forward control path that receives a reference position signal to apply a feed-forward command effort at a rate greater than a servo sampling rate |
Thao P. Trieu, Ara Nazarian, Richard K. Wong |
2003-09-02 |
| 6529654 |
Method for transparent switching and controlling optical signals using mirror designs |
Richard K. Wong, Jenghung Chen, Xiao Yang, Michael Barrett Wolfson |
2003-03-04 |
| 6204988 |
Disk drive capable of autonomously evaluating and adapting the frequency response of its servo control system |
Raffi Codilian, Jie Yu |
2001-03-20 |
| 5142296 |
Ink jet nozzle crosstalk suppression |
Juan E. Lopez, Joe Lahut, Dung Do |
1992-08-25 |
| 5130720 |
System for driving ink jet transducers and method of operation |
Juan E. Lopez |
1992-07-14 |