Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12266386 | Data storage device with rapid in-field repeatable runout noise removal calibration | Sandy Xianghui Xiao | 2025-04-01 |
| 12176015 | Pole tip recession compensation by dual heater ratio optimization in a hard disk drive | Bernhard E. Knigge, Qinghua Zeng | 2024-12-24 |
| 11869546 | Adaptive dual heater mode for hard disk drive | Qinghua Zeng, Kazuhiro Saito, Bernhard E. Knigge | 2024-01-09 |
| 9786309 | Data storage device detecting minimum stable fly height of a head over a disk | Bernhard E. Knigge, Robert E. Eaton, Puneet Bhargava | 2017-10-10 |
| 9053740 | Disk drive determining touchdown threshold | Abhimanyu Sharma, Galvin T. Chia | 2015-06-09 |
| 8970978 | Disk drive detecting head touchdown by applying DC+AC control signal to fly height actuator | Bernhard E. Knigge, Stanley H. Shepherd | 2015-03-03 |
| 8934192 | Disk drive determining operating fly height by detecting head disk contact from read signal amplitude variance | Scott A. St. John | 2015-01-13 |
| 8891193 | Disk drive calibrating threshold and gain of touchdown sensor | Xianghui Xiao, Scott A. St. John | 2014-11-18 |
| 8885279 | Disk drive detecting head/disk contact by evaluating a subset of touchdown metrics during a servo sector interrupt | Scott A. St. John | 2014-11-11 |
| 8879188 | Disk drive employing fly height calibration tracks to account for magnetic entropy and thermal decay | Galvin T. Chia | 2014-11-04 |
| 8773802 | Disk drive resetting fly height reference generated from a degrading calibration track | Kent D. Anderson, Shafa Dahandeh, Galvin T. Chia, Alvin W. Tan, Ming Jin | 2014-07-08 |
| 8681445 | Disk drive detecting head touchdown by computing anti-correlation in sensor signal | Xianghui Xiao | 2014-03-25 |
| 8582231 | Disk drive determining head touchdown threshold based on curve fitting prediction error | Xianghui Xiao | 2013-11-12 |
| 8508877 | Disk drive with multi-protocol channel to controller interface and method | Curtis H. Bruner, Larry J. Koudele, James B. French, Jr. | 2013-08-13 |
| 7738204 | Disk drive with multi-protocol channel to controller interface and method | Curtis H. Bruner, Larry J. Koudele, James B. French, Jr. | 2010-06-15 |
| 7724461 | Determining head non-linearity in a disk drive | James P. R. McFadyen | 2010-05-25 |
| 7583466 | Disk drive determining operating fly height by detecting head disk contact from disk rotation time | Scott A. St. John | 2009-09-01 |
| 6611396 | Disk level servo write | Bruce D. Emo, John P. Squires | 2003-08-26 |