Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12007021 | Motor control method and device of bistable gear shifter and automobile | Hanmao Fan, Zhenwen Chen, Ming LI, Huonan Tan | 2024-06-11 |
| 11942122 | Determining absolute position on HDD spiral patterns using dual TDMR readers | Gary W. Calfee, Gabor Szita | 2024-03-26 |
| 11574650 | Gain scheduled controller to handle unpredictable disturbances during spiral write | Zhi-Gang Wang | 2023-02-07 |
| 11508403 | Reducing the effect of actuator cross-coupling in split actuator drives | Gabor Szita, Anton Gerasimov, Gary W. Calfee | 2022-11-22 |
| 10074391 | Spiral-based self-servo-write on single disk surface | Zhi-Gang Wang | 2018-09-11 |
| 9953672 | Accurate repeatable runout compensation in disk drives during seeks | Gabor Szita | 2018-04-24 |
| 9865290 | Single surface in-drive erase | Ting-Chun Janet Liu, Gary W. Calfee | 2018-01-09 |
| 9824708 | Spiral write launch while servoing on reference guide spirals | Gabor Szita, Tony Huang, Gary W. Calfee | 2017-11-21 |
| 9691421 | Writing spirals with accurate slope on a disk drive media | Gabor Szita, Li Zhang, Gary W. Calfee | 2017-06-27 |
| 9640210 | Virtual window mode for guide spiral servo demodulation | Gabor Szita | 2017-05-02 |
| 9633682 | Accurate spiral gate positioning in the presence of large non-repeatable runout | Gabor Szita | 2017-04-25 |
| 9514774 | Spiral pitch correction based on micro-jog variation | Gabor Szita, Anton Gerasimov | 2016-12-06 |
| 9311941 | Erase coarse guide spiral-based in-drive erase process | Ting-Chun Janet Liu, Gabor Szita, Gary W. Calfee | 2016-04-12 |
| 8934191 | Disk drive generating a disk locked clock using radial dependent timing feed-forward compensation | Wei Guo | 2015-01-13 |
| 8929021 | Disk drive servo writing from spiral tracks using radial dependent timing feed-forward compensation | Wei Guo | 2015-01-06 |
| 8780473 | Disk drive selecting a global digital-to-analog setting for a plurality of heads | Hongchao ZHAO | 2014-07-15 |
| 8749904 | Disk drive compensating for track squeeze by writing non-circular servo tracks | Jeng-Yu Wang, Siri S. Weerasooriya, Duc H. Banh | 2014-06-10 |
| 8724253 | Disk drive adjusting demodulation window for spiral track using timing feed-forward compensation | Siri S. Weerasooriya, Brian P. Rigney | 2014-05-13 |
| 8687312 | Edge detection for disk drives | — | 2014-04-01 |
| 8670206 | Disk drive estimating repeatable runout of reference pattern based on repeatable runout of phase error | Siri S. Weerasooriya, Yilin Cai | 2014-03-11 |
| 8665546 | Adaptive threshold for detecting touchdown or contamination | Hongchao ZHAO, Yilin Cai, Don Brunnett | 2014-03-04 |
| 8537486 | Disk drive writing spiral tracks on a slave surface using repeatable runout compensation for a master surface | Siri S. Weerasooriya, Yun-Gi Hong, Yilin Cai | 2013-09-17 |
| 7852592 | Spiral slope approximation of spiral patterns written to a disk of a disk drive | Charles A. Park, Yilin Cai, Siri S. Weerasooriya | 2010-12-14 |
| 7746592 | Disk drive detecting defective spiral servo track | Siri S. Weerasooriya | 2010-06-29 |
| 7656604 | Disk drive demodulating a spiral track by finding a maximum correlation between a spiral track crossing signal and a time-shifted nominal spiral track crossing signal | Siri S. Weerasooriya, Charles A. Park | 2010-02-02 |