Inventor · disambiguated record
Marcus W. May
Also filed as: MAY MARCUS W · MAY MARCUS WILLIAM
43 granted patents·8 pending applications·613 citations·filing 1994–2011
98Inventor score
Top patents by PatentIndex Score
51 records- 0195US7917788B2SOC with low power and performance modesFREESCALE SEMICONDUCTOR INC·Filed 2007·Granted Mar 29, 2011·41 cites·14 claims
- 0290US7394314B2Class-D amplifier with noise-immunity feedbackSIGMATEL INC·Filed 2006·Granted Jul 1, 2008·17 cites·9 claims
- 0390US6215423B1Method and system for asynchronous sample rate conversion using a noise-shaped numerically control oscillatorMOTOROLA INC·Filed 1998·Granted Apr 10, 2001·81 cites·6 claims
- 0488US7447924B2Method and apparatus for power supply adjustment with increased slewingFREESCALE SEMICONDUCTOR INC·Filed 2005·Granted Nov 4, 2008·18 cites·18 claims
- 0587US7208919B2Method and apparatus for digitally regulating an output voltage using noise-shaped component selectionSIGMATEL INC·Filed 2005·Granted Apr 24, 2007·23 cites·18 claims
- 0686US7882383B2System on a chip with RTC power supplyFREESCALE SEMICONDUCTOR INC·Filed 2007·Granted Feb 1, 2011·22 cites·12 claims
- 0786US7566993B2Battery optimized circuit and system on a chipFREESCALE SEMICONDUCTOR INC·Filed 2007·Granted Jul 28, 2009·23 cites·12 claims
- 0885US8035368B2Integrated circuit, universal serial bus on-the-go power source and methods for use therewithFREESCALE SEMICONDUCTOR INC·Filed 2006·Granted Oct 11, 2011·15 cites·12 claims
- 0983US7490266B2Integrated circuit and processing system with improved power source monitoring and methods for use therewithFREESCALE SEMICONDUCTOR INC·Filed 2006·Granted Feb 10, 2009·12 cites·31 claims
- 1083US7262585B2Method and apparatus for bi-directional current limit in a dual-power source capable deviceSIGMATEL INC·Filed 2005·Granted Aug 28, 2007·19 cites·18 claims
- 1180US7075280B2Pulse-skipping PFM DC-DC converter using a voltage mode control loopSIGMATEL INC·Filed 2003·Granted Jul 11, 2006·36 cites·13 claims
- 1280US6977447B2Method and apparatus for regulating multiple outputs of a single inductor DC to DC converterSIGMATEL INC·Filed 2002·Granted Dec 20, 2005·31 cites·20 claims
- 1378US8106892B2Touch screen driver for resolving plural contemporaneous touches and methods for use therewithFELDER MATTHEW D·Filed 2007·Granted Jan 31, 2012·10 cites·16 claims
- 1478US6366522B1Method and apparatus for controlling power consumption of an integrated circuitSIGMATEL INC·Filed 2000·Granted Apr 2, 2002·26 cites·22 claims
- 1574US7246027B2Power optimization of a mixed-signal system on an integrated circuitSIGMATEL INC·Filed 2005·Granted Jul 17, 2007·6 cites·21 claims
- 1674US6404172B1Method and apparatus for providing integrated buck or boost conversionSIGMATEL INC·Filed 2000·Granted Jun 11, 2002·29 cites·16 claims
- 1773US7583216B2Adjustable DAC and applications thereofSIGMATEL INC·Filed 2007·Granted Sep 1, 2009·8 cites·20 claims
- 1873US7312538B2Method and apparatus for regulating multiple outputs of a single inductor DC to DC converterSIGMATEL INC·Filed 2005·Granted Dec 25, 2007·9 cites·28 claims
- 1973US6633187B1Method and apparatus for enabling a stand alone integrated circuitSIGMATEL INC·Filed 2000·Granted Oct 14, 2003·18 cites·20 claims
- 2072US7197412B2Method and integrated circuit for use by a handheld multiple function deviceSIGMATEL INC·Filed 2006·Granted Mar 27, 2007·8 cites·31 claims
- 2172US6859156B2Variable bandgap reference and applications thereofSIGMATEL INC·Filed 2003·Granted Feb 22, 2005·16 cites·10 claims
- 2271US7372967B2Microphone bias circuitSIGMATEL INC·Filed 2003·Granted May 13, 2008·15 cites·14 claims
- 2367US7036029B2Conserving power of a system on a chip using speed sensingSIGMATEL INC·Filed 2003·Granted Apr 25, 2006·12 cites·21 claims
- 2467US6778119B2Method and apparatus for accurate digital-to-analog conversionSIGMATEL INC·Filed 2003·Granted Aug 17, 2004·14 cites·18 claims
- 2566US5412335AArea-efficient current-input filter, virtual ground circuit used in same, and method thereforMOTOROLA INC·Filed 1994·Granted May 2, 1995·19 cites·19 claims
- 2664US7890071B2Handheld audio systemSIGMATEL INC·Filed 2005·Granted Feb 15, 2011·3 cites·20 claims
- 2761US7508686B2System and method for configuring direct current converterSIGMATEL INC·Filed 2005·Granted Mar 24, 2009·4 cites·20 claims
- 2859US7528653B2Class-D amplifier with noise-immunity feedbackFREESCALE SEMICONDUCTOR INC·Filed 2008·Granted May 5, 2009·3 cites·11 claims
- 2959US7402981B2Method and apparatus to perform battery charging using a DC-DC converter circuitSIGMATEL INC·Filed 2003·Granted Jul 22, 2008·13 cites·19 claims
- 3058US7259480B2Conserving power of a system on a chip using an alternate power sourceSIGMATEL INC·Filed 2003·Granted Aug 21, 2007·10 cites·16 claims
- 3156US7030695B2Low threshold voltage circuit employing a high threshold voltage output stageSIGMATEL INC·Filed 2003·Granted Apr 18, 2006·8 cites·20 claims
- 3255US7278119B2Battery-optimized system-on-a-chip and applications thereofSIGMATEL INC·Filed 2003·Granted Oct 2, 2007·8 cites·46 claims
- 3354US6853171B2Low loss multiple output stage for a DC-to-DC converterSIGMATEL INC·Filed 2003·Granted Feb 8, 2005·10 cites·14 claims
- 3453US7861206B2System-on-a-chip for processing multimedia data and applications thereofSIGMATEL INC·Filed 2007·Granted Dec 28, 2010·1 cites·54 claims
- 3553US7555410B2Circuit for use with multifunction handheld device with video functionalityFREESCALE SEMICONDUCTOR INC·Filed 2006·Granted Jun 30, 2009·3 cites·49 claims
- 3653US2011145623A1System on a chip with clock circuitsFREESCALE SEMICONDUCTOR INC·Filed 2011·Application pending·0 cites
- 3751US7535287B2Semiconductor device and system and method of crystal sharingSIGMATEL INC·Filed 2006·Granted May 19, 2009·2 cites·31 claims
- 3851US6965334B2Variable bandgap referenceSIGMATEL INC·Filed 2004·Granted Nov 15, 2005·5 cites·4 claims
- 3949US7378829B2Method and system for providing voltageSIGMATEL INC·Filed 2005·Granted May 27, 2008·2 cites·18 claims
- 4048US7164320B2Current threshold circuitSIGMATEL INC·Filed 2004·Granted Jan 16, 2007·5 cites·19 claims
- 4148US2006075166A1Multiple function integrated circuitGRASSIAN AARON·Filed 2005·Application pending·0 cites
- 4245US7720456B2Adjust switching rate of a power supply to mitigate interferenceFREESCALE SEMICONDUCTOR INC·Filed 2006·Granted May 18, 2010·0 cites·18 claims
- 4345US2004083315A1Integrated circuit for a multi-function handheld deviceFiled 2002·Application pending·0 cites
- 4443US7629709B2Regulation of a DC to DC converterFREESCALE SEMICONDUCTOR INC·Filed 2004·Granted Dec 8, 2009·0 cites·23 claims
- 4543US7046530B2Method and apparatus for current limiting of an output of a DC-to-DC converterSIGMATEL INC·Filed 2003·Granted May 16, 2006·4 cites·16 claims
- 4642US2004104707A1Method and apparatus for efficient battery use by a handheld multiple function deviceFiled 2003·Application pending·0 cites
- 4737US2006261794A1Method & apparatus for DC-DC regulation with improved transient functionMAY MARCUS W·Filed 2005·Application pending·0 cites
- 4836US2007055462A1Circuit for use in a multifunction handheld device with wireless host interfaceMULLIGAN DANIEL·Filed 2006·Application pending·0 cites
- 4934US2007078548A1Circuit for use in multifunction handheld device having a radio receiverMAY DANIEL M·Filed 2006·Application pending·0 cites
- 5032US5640460AAmplitude adjust circuit and method thereofMOTOROLA INC·Filed 1995·Granted Jun 17, 1997·4 cites·14 claims
Showing the top 50 of 51 patent records by PatentIndex Score.
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