David A. Freitas
16Patents
8h-index
14Co-inventors
69Inventor score
Filing activity: Mar 27, 1991 → Nov 24, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5602692A | Sampled position error signal demodulation system for banded data disk drives | Physics | 24 | Expired |
| US5801896A | Method and apparatus for servo pulse detection with high AC coupling and large pulse asymmetry | Physics | 17 | Expired |
| US5966263A | Method and apparatus to increase head/AE select robustness for a system using multiple head servo write | Physics | 15 | Expired |
| US5117199A | Fully differential follower using operational amplifier | Electricity | 15 | Expired |
| US6356113B1 | Recording channel with voltage-type write driver for use with transmission-line interconnect | Physics | 14 | Expired |
| US6130795A | Method and apparatus to sense and report connection integrity of a differential ECL transmission line having proper parallel termination | Physics | 13 | Expired |
| US6525896B2 | Method and circuitry for high voltage application with MOSFET technology | Physics | 9 | Expired |
| US6038090A | Method and apparatus for improving baseline recovery of an MR head using a programmable recovery time constant | Physics | 8 | Expired |
| US5793556A | High speed PES demodulator | Physics | 8 | Expired |
| US9876656B1 | Differential feedback equalizer and method of implementing a differential feedback equalizer | Electricity | 5 | Active |
| US5617536A | Method and apparatus for servo control with error detection of gray (pennington) code used for servo track ID | Physics | 5 | Expired |
| US6954321B2 | Method and apparatus for improved read-to-write transition time for a magneto-resistive head | Physics | 4 | Expired |
| US7844843B2 | Implementing power savings in HSS clock-gating circuit | Emerging Cross-Sectional Technologies | 3 | Active |
| US6377412B1 | Method and apparatus for improving baseline recovery of an MR head using a programmable recovery time constant | Physics | 3 | Expired |
| US7332932B2 | Serial link receiver with wide input voltage range and tolerance to high power voltage supply | Electricity | 1 | Active |
| US11190199B1 | Asynchronous successive approximation register (SAR) analog-to-digital converter (ADC) timing adjustment based on output statistics | Electricity | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.