Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12406697 | Voltage slew control of fine actuators during discharge | Hajime Eguchi, Hideaki Ito | 2025-09-02 |
| 12266385 | Data storage device having dual actuators and method for emergency power off retract (EPOR) of dual actuators | Brian Johnson, Jaesoo Byoun, Hideaki Ito, Naoyuki Kagami, Hiroki Watanabe | 2025-04-01 |
| 12254909 | VCM PWM to linear mode transition offset optimization to improve PES | Jaesoo Byoun, Brian Johnson, Hideaki Ito, Naoyuki Kagami | 2025-03-18 |
| 11978482 | Data storage device with closed loop extended park mode during spin down operation | Brian Johnson, Jaesoo Byoun, Hideaki Ito, Naoyuki Kagami | 2024-05-07 |
| 11948603 | Optimize power, RTV, and coupled PES during seek operations | Brian Johnson, Jaesoo Byoun, Hideaki Ito, Naoyuki Kagami, Yasunori Fukuyama | 2024-04-02 |
| 11862202 | Data storage device with smart ISOFET threshold voltage automatic tuning | Brian Johnson, Jaesoo Byoun, Hideaki Ito, Naoyuki Kagami | 2024-01-02 |
| 11837264 | Data storage device having dual actuators and method for data egress throttling during emergency power off retract (EPOR) | Brian Johnson, Jaesoo Byoun, Hideaki Ito, Naoyuki Kagami, Hiroki Watanabe | 2023-12-05 |
| 11823710 | Dual spindle motors and dual spindle motor control for data storage | Jaesoo Byoun, Brian Johnson, Hideaki Ito, Naoyuki Kagami | 2023-11-21 |
| 11763843 | VCM PWM to linear mode transition offset optimization to improve PES | Jaesoo Byoun, Brian Johnson, Hideaki Ito, Naoyuki Kagami | 2023-09-19 |
| 11763844 | Data storage device having dual actuators and method for emergency power off retract (EPOR) of dual actuators | Brian Johnson, Jaesoo Byoun, Hideaki Ito, Naoyuki Kagami, Hiroki Watanabe | 2023-09-19 |
| 11749303 | Data storage device with soft on-disk activation of fine actuators | Jaesoo Byoun, Brian Johnson, Hideaki Ito, Naoyuki Kagami | 2023-09-05 |
| 11373678 | Data storage device using windowed delta-sigma analog-to-digital converter in digital current control loop | Jaesoo Byoun, Naoyuki Kagami | 2022-06-28 |
| 11043243 | Calibrating elevator actuator for disk drive | Kexiu Liu, Kuang-Yang Tu, Jenghung Chen, Naoyuki Kagami | 2021-06-22 |
| 10996740 | Write data protection at emergency power off | Hiroki Watanabe, Naoyuki Kagami, James Jinshi Ng, Brian K. Tanner | 2021-05-04 |
| 10635158 | Write data protection at emergency power off | Hiroki Watanabe, Naoyuki Kagami, James Jinshi Ng, Brian K. Tanner | 2020-04-28 |
| 10176840 | Data storage device adjusting spindle motor current based on continuous function of voice coil current during seek | Brian Johnson, Jaesoo Byoun, Hideaki Ito | 2019-01-08 |
| 7706099 | Magnetic disk drive and method of controlling the same | Hiroshi Uchida | 2010-04-27 |
| 7580217 | Disk drive with hybrid analog-digital acceleration feedforward control system and method for rejecting rotational vibration | Jirou Abe, Tetsuo Semba | 2009-08-25 |
| 7576936 | Method of starting the magnetic disk device using fluid dynamic bearing spindle motor | Iwao Oshimi, Nobuhisa Koide, Jiro Abe | 2009-08-18 |
| 7561365 | Disk drive and control method thereof | Masaaki Noguchi, Tetsuo Ueda, Mirei Hosono | 2009-07-14 |
| 7474490 | Disk drive with reduced vibration due to rotational acceleration of a spindle motor | Yukiko Hayashi, Isao Yoneda, Nobuhisa Koide, Yuhji Amari | 2009-01-06 |
| 7253581 | Data storage device, motor control device, and motor control method | Nobuhisa Koide, Yukiko Hayashi, Shougo Shimada | 2007-08-07 |
| 7133236 | Storage device control method, motor control method, and storage device | Nobuhisa Koide | 2006-11-07 |
| 7035034 | Data storage device, control device, off-track control method, and control method | Tetsuo Semba, Naoyuki Kagami, Akira Tokizono | 2006-04-25 |
| 6961202 | Data storage device having acceleration sensor attached to circuit board for detecting vibrations in planar rotation direction along circuit board | Mirei Hosono, Yoshitaka Kakizaki, Naoyuki Kagami | 2005-11-01 |