Inventor · disambiguated record
William D. Llewellyn
Also filed as: LLEWELLYN WILLIAM · LLEWELLYN WILLIAM D · LLEWELLYN WILLIAM DAVID
32 granted patents·1 pending application·641 citations·filing 1984–2017
97Inventor score
Files withNAT SEMICONDUCTOR CORP17TRIPATH TECHNOLOGY INC6LLEWELLYN WILLIAM D5FAIRCHILD SEMICONDUCTOR4
Top patents by PatentIndex Score
33 records- 0195US5579352ASimplified window de-skewing in a serial data receiverNAT SEMICONDUCTOR CORP·Filed 1994·Granted Nov 26, 1996·102 cites·21 claims
- 0293US9729986B2Protection of a speaker using temperature calibrationFAIRCHILD SEMICONDUCTOR·Filed 2013·Granted Aug 8, 2017·29 cites·20 claims
- 0389US6724248B2DC offset self-calibration system for a digital switching amplifierTRIPATH TECHNOLOGY INC·Filed 2002·Granted Apr 20, 2004·46 cites·41 claims
- 0486US8866544B2Class D pulse width modulator with dual feedbackLLEWELLYN WILLIAM D·Filed 2012·Granted Oct 21, 2014·11 cites·17 claims
- 0586US5374860AMulti-tap digital delay lineNAT SEMICONDUCTOR CORP·Filed 1993·Granted Dec 20, 1994·61 cites·59 claims
- 0683US10015608B2Methods and apparatus related to protection of a speakerFAIRCHILD SEMICONDUCTOR·Filed 2017·Granted Jul 3, 2018·4 cites·20 claims
- 0782US5912779AMethod of reading and writing data on a magnetic mediumNAT SEMICONDUCTOR CORP·Filed 1996·Granted Jun 15, 1999·29 cites·9 claims
- 0881US5339050AFrequency synthesizing phase lock loop with unvarying loop parametersNAT SEMICONDUCTOR CORP·Filed 1993·Granted Aug 16, 1994·49 cites·33 claims
- 0978US7236117B1Apparatus and method for ping-pong mismatch correctionNAT SEMICONDUCTOR CORP·Filed 2004·Granted Jun 26, 2007·27 cites·21 claims
- 1078US7026866B2DC offset self-calibration system for a switching amplifierTRIPATH TECHNOLOGY INC·Filed 2004·Granted Apr 11, 2006·24 cites·20 claims
- 1178US6127893AMethod and apparatus for controlling an audio signal levelTRIPATH TECHNOLOGY INC·Filed 1998·Granted Oct 3, 2000·37 cites·17 claims
- 1268US9647546B2Dual-mode voltage doubling buck converter with smooth mode transitionFAIRCHILD SEMICONDUCTOR·Filed 2014·Granted May 9, 2017·2 cites·18 claims
- 1367US7515310B2Programmable gain amplifier with hybrid digital/analog architectureNAT SEMICONDUCTOR CORP·Filed 2004·Granted Apr 7, 2009·8 cites·20 claims
- 1467US6566946B2Noise reduction scheme for operational amplifiersTRIPATH TECHNOLOGY INC·Filed 2001·Granted May 20, 2003·12 cites·18 claims
- 1566US8831230B2Amplifier crosstalk cancellation techniqueLLEWELLYN WILLIAM D·Filed 2011·Granted Sep 9, 2014·4 cites·20 claims
- 1665US5172397ASingle channel serial data receiverNAT SEMICONDUCTOR CORP·Filed 1991·Granted Dec 15, 1992·47 cites·14 claims
- 1764US7443905B1Apparatus and method for spread spectrum clock generator with accumulatorNAT SEMICONDUCTOR CORP·Filed 2004·Granted Oct 28, 2008·11 cites·20 claims
- 1862US5329251AMultiple biasing phase-lock-loops controlling center frequency of phase-lock-loop clock recovery circuitNAT SEMICONDUCTOR CORP·Filed 1993·Granted Jul 12, 1994·41 cites·23 claims
- 1962US4546307ANPN Transistor current mirror circuitNAT SEMICONDUCTOR CORP·Filed 1984·Granted Oct 8, 1985·10 cites·6 claims
- 2060US6329876B1Noise reduction scheme for operational amplifiersTRIPATH TECHNOLOGY INC·Filed 1999·Granted Dec 11, 2001·15 cites·17 claims
- 2157US5394079ACurrent mirror with improved input voltage headroomNAT SEMICONDUCTOR CORP·Filed 1993·Granted Feb 28, 1995·17 cites·25 claims
- 2256US5644457AMultiple gap read/write head for data storage devicesNAT SEMICONDUCTOR CORP·Filed 1995·Granted Jul 1, 1997·9 cites·11 claims
- 2354US8638148B2Edge rate controlLLEWELLYN WILLIAM D·Filed 2010·Granted Jan 28, 2014·1 cites·15 claims
- 2453US6785392B1Methods and apparatus for enabling or disabling an amplifierTRIPATH TECHNOLOGY INC·Filed 2001·Granted Aug 31, 2004·7 cites·44 claims
- 2552US5426539AMultiple gap read/write head for data storage devicesNAT SEMICONDUCTOR CORP·Filed 1992·Granted Jun 20, 1995·6 cites·38 claims
- 2650US5572505ASpring starter for a hard disk drive platter assemblyFiled 1994·Granted Nov 5, 1996·8 cites·12 claims
- 2747US7821338B2Amplifier current drive reversalFAIRCHILD SEMICONDUCTOR·Filed 2009·Granted Oct 26, 2010·1 cites·23 claims
- 2843US5463655ASingle-ended pulse gating circuitNAT SEMICONDUCTOR CORP·Filed 1993·Granted Oct 31, 1995·14 cites·78 claims
- 2938US5287054AAttenuating voltage follower circuitNAT SEMICONDUCTOR CORP·Filed 1993·Granted Feb 15, 1994·5 cites·25 claims
- 3037US9083322B2Subsonic test signal generation techniqueLLEWELLYN WILLIAM D·Filed 2011·Granted Jul 14, 2015·0 cites·15 claims
- 3134US2012206191A1Edge rate control (erc) pre-biasing techniqueLLEWELLYN WILLIAM D·Filed 2011·Application pending·0 cites
- 3233US5361068ALow-current digital-to-analog converterNAT SEMICONDUCTOR CORP·Filed 1993·Granted Nov 1, 1994·3 cites·39 claims
- 3330US5302915AUnity-gain, wide bandwidth, bipolar voltage follower with a very low input currentNAT SEMICONDUCTOR CORP·Filed 1993·Granted Apr 12, 1994·1 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →