Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11826577 | Impedance measurement circuit architecture | Michael Kemmerer | 2023-11-28 |
| 8643973 | Method and apparatus for reflection cancellation | Rajarshi Mukhopadhyay, Marco Corsi, Paul Merle Emerson | 2014-02-04 |
| 8040627 | Methods and apparatus for generating a hard drive write signal | Jeremy Kuehlwein | 2011-10-18 |
| 7839589 | Write current waveform asymmetry compensation | Raymond Barnett | 2010-11-23 |
| 7382560 | Low power servo mode write driver | Raymond Barnett, Tuan V. Ngo | 2008-06-03 |
| 7190541 | Hi-speed preamplifier write driver for hard drive with improved symmetry | Jeremy Kuehlwein | 2007-03-13 |
| 7068454 | Hard disk storage system including a first transistor type and a second transistor type where a first voltage level pulls one of a first pair of transistors and a second voltage level pulls one of a second pair of transistors at substantially the same time | Jeremy Kuehlwein | 2006-06-27 |
| 7035027 | Circuits to achieve high data rate writing on thin film transducer | Raymond Barnett, Tuan Van Ngo | 2006-04-25 |
| 6879455 | Method to increase head voltage swing and to reduce the rise time of write driver | Tuan V. Ngo, Raymond Barnett | 2005-04-12 |
| 6798591 | Reference circuit for write driver circuit with programmable write current, overshoot duration and overshoot amplitude control | Raymond Barnett, Tuan V. Ngo | 2004-09-28 |
| 6735030 | Method to write servo on multi-channels with voltage mode data and single channel with current mode data | Tuan V. Ngo, Raymond Barnett | 2004-05-11 |
| 5986841 | Disc drive having a serial preamplifier interface with broadcast mode addressing | — | 1999-11-16 |