Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9147428 | Disk drive with improved spin-up control | Charles J. Calaway, Wenli Yang, Jinsik Kim, Jianghong Ding | 2015-09-29 |
| 8737008 | Disk drive adjusting gain of spindle motor compensator based on a ratio of spin speeds | Taylor Norito Kelena Watanabe, Wenli Yang, William T. Stoll, Angel Yu | 2014-05-27 |
| 8610391 | Disk drive optimizing spindle motor torque by adjusting leading phase angle during spin-up | Wenli Yang, Philip Tin Yue Ng, Robert P. Ryan | 2013-12-17 |
| 8072703 | Disk drive detecting when head is parked on ramp | Charles J. Calaway, Kenneth T. Tabacchi | 2011-12-06 |
| 7876522 | Disk drive updating estimate of voice coil resistance to account for resistance change prior to unload operation | Charles J. Calaway | 2011-01-25 |
| 7800857 | Disk drive calibrating voice coil resistance for velocity control of voice coil motor | Charles J. Calaway | 2010-09-21 |
| 7573670 | Disk drive seeking to OD track and then ramping velocity to implement fast unload | Robert P. Ryan, Terry C. Dawson | 2009-08-11 |
| 7548392 | Disk drive controlling a voice coil motor during an emergency unload | Robert P. Ryan, Hemant Melkote | 2009-06-16 |
| 7224546 | Disk drive employing a calibrated brake pulse to reduce acoustic noise when latching an actuator arm | Gokhan Orakcilar, Steven Nemshick, Robert P. Ryan, Dean V. Dang, Lakshman Rathnam +1 more | 2007-05-29 |
| 7095579 | Disk drive employing momentum based unload during power failure | Robert P. Ryan, Hemant Melkote, Jenghung Chen, John R. Agness, Terry C. Dawson | 2006-08-22 |
| 5602693 | Method and apparatus for sensing position in a disk drive | Don Brunnett | 1997-02-11 |
| 4939600 | Efficient head positioner power amplifier | Russell H. Jacobs, Bipin V. Gami | 1990-07-03 |
| 4910617 | Disk drive head positioning servo system utilizing encoded track zone information | Donald Brunnett, Mark Heimbaugh | 1990-03-20 |
| 4831470 | Method and apparatus for recording disk servo information with detachable position decoder | Donald Brunnett | 1989-05-16 |
| 4207601 | Transient temperature compensation for moving head disk drive | Abraham Brand, Eric M. Dunstan, Raymond J. Marinello | 1980-06-10 |