Issued Patents All Time
Showing 1–25 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12148456 | Split actuator drive that limits slew rate of aggressor VCM to reduce victim disturbances | Richard M. Ehrlich, Thorsten Schmidt | 2024-11-19 |
| 11615811 | Split actuator drive that limits slew rate of aggressor VCM to reduce victim disturbances | Richard M. Ehrlich, Thorsten Schmidt | 2023-03-28 |
| 10678442 | Disk drive that efficiently handles random mixed-R/W command-streams | Takeyori Hara, Richard M. Ehrlich | 2020-06-09 |
| 10198188 | Disk drive that efficiently handles random mixed-R/W command-streams | Takeyori Hara, Richard M. Ehrlich | 2019-02-05 |
| 9245560 | Data storage device measuring reader/writer offset by reading spiral track and concentric servo sectors | Jianbin Nie, Charles A. Park | 2016-01-26 |
| 9208810 | Data storage device attenuating interference from first spiral track when reading second spiral track | Jianbin Nie, Charles A. Park, Brian P. Rigney | 2015-12-08 |
| 9076490 | Disk drive writing radial offset spiral servo tracks by reading spiral seed tracks | Jianbin Nie, Edgar D. Sheh | 2015-07-07 |
| 9047901 | Disk drive measuring spiral track error by measuring a slope of a spiral track across a disk radius | Jianbin Nie, Edgar D. Sheh | 2015-06-02 |
| 8982490 | Data storage device reading first spiral track while simultaneously writing second spiral track | Charles A. Park, Jianbin Nie, Edgar D. Sheh, Brian P. Rigney | 2015-03-17 |
| 8917474 | Disk drive calibrating a velocity profile prior to writing a spiral track | Brian P. Rigney, Edgar D. Sheh, Charles A. Park | 2014-12-23 |
| 8902535 | Disk drive adapting feed-forward compensation using iterative learning control over segments of seek length | Jianbin Nie, Edgar D. Sheh | 2014-12-02 |
| 8896957 | Disk drive performing spiral scan of disk surface to detect residual data | Yap Han Ng, Charles A. Park, Songwut Jomthaisong, Brian P. Rigney | 2014-11-25 |
| 8861123 | Disk drive servoing on first disk surface while erasing second disk surface | Edmund Ooi Huat Lye, Chaisit Siricharoenchai, Charles A. Park | 2014-10-14 |
| 8786976 | Disk drive detecting when head is on ramp | Soo-Choon Kang, Scott A. Ottele | 2014-07-22 |
| 8749904 | Disk drive compensating for track squeeze by writing non-circular servo tracks | Jiangang Liang, Jeng-Yu Wang, Duc H. Banh | 2014-06-10 |
| 8724253 | Disk drive adjusting demodulation window for spiral track using timing feed-forward compensation | Jiangang Liang, Brian P. Rigney | 2014-05-13 |
| 8724245 | Disk drive employing overlapping servo zones to facilitate servo zone crossing | Steven C. Smith, Charles A. Park, Jenghung Chen, Guoxiao Guo, Wei Guo | 2014-05-13 |
| 8699173 | Disk drive detecting touchdown event by evaluating frequency response of a touchdown metric | Soo-Choon Kang, Hongchao ZHAO | 2014-04-15 |
| 8670206 | Disk drive estimating repeatable runout of reference pattern based on repeatable runout of phase error | Jiangang Liang, Yilin Cai | 2014-03-11 |
| 8665551 | Disk drive adjusting gain and offset of BEMF velocity sensor during self writing of spiral tracks | Brian P. Rigney, Edgar D. Sheh, Brandon P. Smith | 2014-03-04 |
| 8634283 | Disk drive performing in-drive spiral track writing | Brian P. Rigney, Edgar D. Sheh, Charles A. Park, Scott A. Ottele | 2014-01-21 |
| 8537486 | Disk drive writing spiral tracks on a slave surface using repeatable runout compensation for a master surface | Jiangang Liang, Yun-Gi Hong, Yilin Cai | 2013-09-17 |
| 8451697 | Disk drive centering demodulation windows on spiral tracks during a seek operation | Brian P. Rigney, Steven C. Smith | 2013-05-28 |
| 7852592 | Spiral slope approximation of spiral patterns written to a disk of a disk drive | Jiangang Liang, Charles A. Park, Yilin Cai | 2010-12-14 |
| 7843662 | Servoing on concentric servo sectors of a first disk surface to write a spiral servo track to a second disk surface | Wing Ying, Brian P. Rigney | 2010-11-30 |