Inventor · disambiguated record
David A. Freitas
Also filed as: FREITAS DAVID · FREITAS DAVID A · FREITAS DAVID ANTHONY
16 granted patents·230 citations·filing 1991–2020
94Inventor score
Top patents by PatentIndex Score
16 records- 0193US11190199B1Asynchronous successive approximation register (SAR) analog-to-digital converter (ADC) timing adjustment based on output statisticsXILINX INC·Filed 2020·Granted Nov 30, 2021·7 cites·20 claims
- 0291US9876656B1Differential feedback equalizer and method of implementing a differential feedback equalizerXILINX INC·Filed 2016·Granted Jan 23, 2018·10 cites·20 claims
- 0380US5602692ASampled position error signal demodulation system for banded data disk drivesIBM·Filed 1994·Granted Feb 11, 1997·30 cites·5 claims
- 0475US6130795AMethod and apparatus to sense and report connection integrity of a differential ECL transmission line having proper parallel terminationIBM·Filed 1998·Granted Oct 10, 2000·27 cites·17 claims
- 0573US7844843B2Implementing power savings in HSS clock-gating circuitIBM·Filed 2008·Granted Nov 30, 2010·6 cites·20 claims
- 0669US6954321B2Method and apparatus for improved read-to-write transition time for a magneto-resistive headHITACHI GLOBAL STORAGE TECH·Filed 2002·Granted Oct 11, 2005·7 cites·25 claims
- 0768US5966263AMethod and apparatus to increase head/AE select robustness for a system using multiple head servo writeIBM·Filed 1997·Granted Oct 12, 1999·20 cites·13 claims
- 0867US6356113B1Recording channel with voltage-type write driver for use with transmission-line interconnectIBM·Filed 1999·Granted Mar 12, 2002·20 cites·22 claims
- 0967US5801896AMethod and apparatus for servo pulse detection with high AC coupling and large pulse asymmetryIBM·Filed 1997·Granted Sep 1, 1998·21 cites·31 claims
- 1067US5117199AFully differential follower using operational amplifierIBM·Filed 1991·Granted May 26, 1992·23 cites·13 claims
- 1166US6525896B2Method and circuitry for high voltage application with MOSFET technologyIBM·Filed 1998·Granted Feb 25, 2003·19 cites·7 claims
- 1264US5793556AHigh speed PES demodulatorIBM·Filed 1994·Granted Aug 11, 1998·14 cites·11 claims
- 1358US6038090AMethod and apparatus for improving baseline recovery of an MR head using a programmable recovery time constantIBM·Filed 1996·Granted Mar 14, 2000·12 cites·32 claims
- 1446US6377412B1Method and apparatus for improving baseline recovery of an MR head using a programmable recovery time constantIBM·Filed 1999·Granted Apr 23, 2002·6 cites·35 claims
- 1545US7332932B2Serial link receiver with wide input voltage range and tolerance to high power voltage supplyIBM·Filed 2006·Granted Feb 19, 2008·1 cites·16 claims
- 1645US5617536AMethod and apparatus for servo control with error detection of gray (pennington) code used for servo track IDIBM·Filed 1995·Granted Apr 1, 1997·7 cites·32 claims
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