Issued Patents All Time
Showing 51–75 of 76 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6586896 | Method and apparatus for improved transition from pulse width modulation to linear control | — | 2003-07-01 |
| 6541928 | Adaptive system and method for spinning a polyphase disk drive motor from a stationary position | Ender Tunc Eroglu, Whitney Li | 2003-04-01 |
| 6498446 | System and method for optimizing torque in a polyphase disk drive motor | Ender Tunc Eroglu, Whitney Li | 2002-12-24 |
| 6437525 | Method and apparatus for spinning a multiphase motor for a disk drive system from an inactive state | — | 2002-08-20 |
| 6369534 | Circuit and method for detecting backward spin of a spindle motor for a disk drive | — | 2002-04-09 |
| 6229274 | Statistical phase detection and go start-up algorithm | Carlo Vertemara, Massimiliano Brambilla | 2001-05-08 |
| 6201366 | Method and apparatus for improved transition from pulse width modulation to linear control | — | 2001-03-13 |
| 6163120 | Simple back emf reconstruction in pulse width modulation (PWM) mode | — | 2000-12-19 |
| 6133107 | Process for co-integrating DMOS transistors with schottky diode body structure | — | 2000-10-17 |
| 6091222 | Statistical phase detection and go start-up algorithm | Carlo Vertemara, Massimiliano Brambilla | 2000-07-18 |
| 6084364 | Using different frequency clocks to clock counters of a driver circuit at spin-up and at regulation | — | 2000-07-04 |
| 6081112 | Method and circuit for determining the velocity of a data detector mechanism of a mass storage device, or the like, using a BEMF voltage in the associated voice coil | Francesco Carobolante | 2000-06-27 |
| 5994856 | Method and apparatus for improved transition from pulse width modulation to linear control | — | 1999-11-30 |
| 5925910 | DMOS transistors with schottky diode body structure | — | 1999-07-20 |
| 5923133 | Adaptive slew rate adjustment for a brushless multiphase DC motor and method | — | 1999-07-13 |
| 5883479 | BEMF rectification during power off to prevent parasitic effect | Gianluca Colli | 1999-03-16 |
| 5866998 | Circuit for improving back emf detection in pulse width modulation mode | — | 1999-02-02 |
| 5834826 | Protection against adverse parasitic effects in junction-isolated integrated circuits | — | 1998-11-10 |
| 5767654 | Apparatus and method for detecting motor position in PWM operation of a polyphase DC motor | Chinh Nguyen | 1998-06-16 |
| 5504402 | BEMF rectification voltage when power supply energy fails | — | 1996-04-02 |
| 5477171 | Full wave rectifier using current mirror bridge | Mark E. Rohrbaugh | 1995-12-19 |
| 5438504 | Voltage multiplier circuits or the like | — | 1995-08-01 |
| 5349521 | Full wave rectifier using a current mirror bridge | Mark E. Rohrbaugh | 1994-09-20 |
| 5252926 | Apparatus and method for distinguishing between faults due to alternator failure and interruption of stator phase signals in automotive battery charging systems | — | 1993-10-12 |
| 5012130 | Small area and low current drain frequency divider cell for integrated circuits | Marco Morelli, Francesco Tricoli | 1991-04-30 |