Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11908502 | Partial pulse pairing for improved read signal quality | Walter R. Eppler | 2024-02-20 |
| 11881239 | Determining fly height using readback signal distortion | Walter R. Eppler | 2024-01-23 |
| 11011189 | Readback waveform oversampling method and apparatus | Wenzhong Zhu | 2021-05-18 |
| 10832704 | Laser calibration using temperature compensation equation for heat-assisted magnetic recording device | — | 2020-11-10 |
| 10770106 | System and method using on-ramp heating to detect laser mode hopping in heat assisted recording | Tim Rausch, Josh Ward Christensen | 2020-09-08 |
| 10665254 | Readback waveform oversampling method and apparatus | Wenzhong Zhu | 2020-05-26 |
| 10643651 | Determining instability zones of a laser of a heat-assisted magnetic recording head | Christopher J. Rea | 2020-05-05 |
| 10515658 | Laser calibration using temperature compensation equation for heat-assisted magnetic recording device | — | 2019-12-24 |
| 10395673 | In-field laser calibration for heat-assisted magnetic recording head using temperature compensation equation | Alfredo Sam Chu, Franklin P. Martens, Steven J. Kimble, James E. Angelo | 2019-08-27 |
| 10339963 | Determining thermal gradient of a HAMR hotspot using pseudo-random bit sequences recorded at a stepped laser power | Ian J. Gilbert, Walter R. Eppler, Tim Rausch | 2019-07-02 |
| 10127930 | In-field laser calibration for heat-assisted magnetic recording head using temperature compensation equation | Alfredo Sam Chu, Franklin P. Martens, Steven J. Kimble, James E. Angelo | 2018-11-13 |
| 10083716 | Laser calibration for heat-assisted magnetic recording head using interleaved laser current | Alfredo Sam Chu, Joshua Ward Christensen, Jason W. Riddering | 2018-09-25 |
| 9990950 | Calibration and adjusting target pre-write clearance offset for a heat-assisted magnetic recording device | Steven J. Kimble, Jason W. Riddering | 2018-06-05 |
| 9916849 | Method and apparatus for detecting and remediating in response to insufficient or excessive HAMR optical power | Tim Rausch, James E. Angelo | 2018-03-13 |
| 9842621 | Heat-assisted magnetic recording apparatus capable of detecting optical power change based on one or more of phase errors and dibit response | Tim Rausch, James E. Angelo | 2017-12-12 |
| 9837118 | Determining thermal gradient of heat-assisted magnetic recording hotspot based on timing errors | Tim Rausch | 2017-12-05 |
| 9830942 | Obtaining a predetermined phase shift in data using different write precompensation associated with different NRZI patterns | Jason Charles Jury, Tim Rausch, Raman Venkataramani | 2017-11-28 |
| 9589587 | Laser adjustment during field operation of a heat-assisted magnetic recording data storage device | Alfredo Sam Chu, Wenzhong Zhu, Michael A. Cordle | 2017-03-07 |
| 9548068 | Determining optical degradation in a heat-assisted read/write head | Tim Rausch, Alfredo Sam Chu | 2017-01-17 |
| 9349415 | Qualifying a recording head based on symmetry of a cross-track profile | Alfredo Sam Chu, Tim Rausch | 2016-05-24 |
| 9311951 | Laser adjustment during field operation of a heat-assisted magnetic recording data storage device | Alfredo Sam Chu, Wenzhong Zhu, Michael A. Cordle | 2016-04-12 |
| 9236081 | Laser temperature calibration in a HAMR device | Alfredo Sam Chu, Jason W. Riddering, Huazhou Lou, Pu-Ling Lu | 2016-01-12 |
| 9202506 | Current boost profile applied to laser during heat-assisted magnetic recording | Alfredo Sam Chu, Jason W. Riddering | 2015-12-01 |