Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7092197 | Rejection of power supply variations for gain error cancellation in pulse-width-modulated motor controllers | Alaa Y. El-Sherif, Kevin W. Ziemer | 2006-08-15 |
| 6995537 | Closed-loop control system to mitigate PWM switching noise | Kevin W. Ziemer, Alaa Y. El-Sherif | 2006-02-07 |
| 6777899 | Circuit and method for removing increased power supply current spike that occurs during initial turn-on or commutation point in PWM mode spindle motor drive system | — | 2004-08-17 |
| 6342984 | Disk drive including DC to DC voltage converter for increasing voltage to its spindle motor and VCM | Hakam D. Hussein, Eric Gregory Oettinger | 2002-01-29 |
| 6160368 | Faster spin-down operation in a disk drive by utilizing pulsed braking | — | 2000-12-12 |
| 5821715 | Pulsed alignment commutation state for sensorless motor start | Robert W. Warren | 1998-10-13 |
| 5682334 | Motor start acceleration profile | Aimee Willoz | 1997-10-28 |
| 5287046 | Method and system for actuator control for direct access storage devices | Gary Dale Carpenter, Robert Jansen, John Jeffrey Stephenson | 1994-02-15 |