Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10211767 | Back EMF monitor for motor control | Qunying Li, Juergen Luebbe | 2019-02-19 |
| 9575473 | Back EMF monitor for motor control | Qunying Li, Juergen Luebbe | 2017-02-21 |
| 9136787 | Back EMF monitor for motor control | Qunying Li, Juergen Luebbe | 2015-09-15 |
| 7652445 | On-chip compensation for a fully differential voice coil motor control | Degang Xia | 2010-01-26 |
| 7522368 | Differential voice coil motor control | Degang Xia | 2009-04-21 |
| 7154725 | Hard disk drive (HDD) electrical over voltage stress (EOS) systems and methods | James E. Chloupek | 2006-12-26 |
| 7106567 | Hard disk drive (HDD) electrical over voltage stress (EOS) systems and methods | James E. Chloupek | 2006-09-12 |
| 6892170 | Method and apparatus for modeling mass storage disk drive motors | Tan Du | 2005-05-10 |
| 6555977 | Disk drive motor position detection using mutual inductance zero crossing | Tan Du | 2003-04-29 |
| 6208280 | Converting a pulse-width modulation signal to an analog voltage | John M. Baker, Edward N. Jeffrey | 2001-03-27 |
| 6184645 | Voltage mode drive for control circuit for an actuator using sampled back EMF control | Joao Carlos Brito, John K. Rote | 2001-02-06 |
| 5821717 | Method and circuit for driving a hard disk drive spindle motor | Mehedi Hassan, James E. Chloupek | 1998-10-13 |
| 5121270 | Multitransducer head positioning servo for use in a bi-directional magnetic tape system | Ezra R. Alcudia | 1992-06-09 |
| 5012989 | Apparatus and method for tape velocity and tension control in a capstanless magnetic tape transport | Ezra R. Alcudia | 1991-05-07 |