Issued Patents All Time
Showing 26–48 of 48 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6313964 | Early write enable with off-track write protection | Bernd Lamberts | 2001-11-06 |
| 6226138 | Encoded TID with error detection and correction ability | Mario Blaum, William John Kabelac | 2001-05-01 |
| 6226140 | Shock detector in a disk drive servo control system | Louis J. Serrano | 2001-05-01 |
| 6215608 | Hardware inhibit for a disk drive digital servo control system | Louis J. Serrano | 2001-04-10 |
| 6181500 | Self servo rewrite method and apparatus | Louis J. Serrano | 2001-01-30 |
| 6141176 | Data storage disk with information encoded in the position error signal fields | Mario Blaum, William John Kabelac, Louis J. Serrano | 2000-10-31 |
| 6088188 | System and method for determining when hard disk drive power amplifier is saturated | Louis J. Serrano | 2000-07-11 |
| 6078445 | Gain control for a dual burst, dual frequency PES servo pattern | Louis J. Serrano | 2000-06-20 |
| 6067202 | Method and apparatus for controlling spindle motor commutation switching times in a disk drive | Bryan Scott Rowan | 2000-05-23 |
| 6049438 | Method and apparatus for encoding digital servo information in a servo burst | Louis J. Serrano | 2000-04-11 |
| 6034831 | Dynamic reverse reassign apparatus and method for a data recording disk drive | Jeffrey J. Dobbek | 2000-03-07 |
| 6005743 | Disk drive with multiple actuators on a single axis and disk surfaces of differing track pitch | Kirk B. Price, Louis J. Serrano | 1999-12-21 |
| 5966263 | Method and apparatus to increase head/AE select robustness for a system using multiple head servo write | David A. Freitas, Kevin Vannorsdel | 1999-10-12 |
| 5912782 | System and method for adjusting actuator control current for directional torque variance in a disk drive | Troy Tse-Quong Lee, Eric Gregory Oettinger, Louis J. Serrano | 1999-06-15 |
| 5886489 | Apparatus and method for reducing spindle power and acoustic noise in a disk drive | Bryan Scott Rowan | 1999-03-23 |
| 5880902 | Method and apparatus for adaptively calibrating disk drive performance based on real time performance monitoring | Brooke McGreer | 1999-03-09 |
| 5761007 | Disk drive with multiple actuators on a single axis having different inertia characteristics | Kirk B. Price, Louis J. Serrano | 1998-06-02 |
| 5617536 | Method and apparatus for servo control with error detection of gray (pennington) code used for servo track ID | David A. Freitas, Louis J. Serrano | 1997-04-01 |
| 5589998 | Cylinder address storage in multiple servo sectors of a track | — | 1996-12-31 |
| 5072318 | Disk file with adaptive cancellation of nonrepeatable disk runout | — | 1991-12-10 |
| 4914644 | Disk file digital servo control system with coil current modeling | James Chien-Chiung Chen, Shih-Ming Shih | 1990-04-03 |
| 4835632 | Disk file digital servo control system with multiple sampling rate | Shih-Ming Shih, Richard J. Spanel, Kenneth G. Yamamoto | 1989-05-30 |
| 4835633 | Disk file digital servo control system with compensation for variation in actuator acceleration factor | Stephen F. Edel, Michael L. Workman, Kenneth G. Yamamoto | 1989-05-30 |