Inventor · disambiguated record
Peter J. Frith
Also filed as: FRITH PETER · FRITH PETER J · FRITH PETER JOHN
40 granted patents·8 pending applications·394 citations·filing 2002–2022
98Inventor score
Files withCIRRUS LOGIC INT SEMICONDUCTOR LTD19WOLFSON MICROELECTRONICS PLC8ESS TECHNOLOGY INC7LESSO JOHN P5LESSO JOHN PAUL2
Top patents by PatentIndex Score
48 records- 0198US7714660B2Amplifier circuit and methods of operation thereofWOLFSON MICROELECTRONICS PLC·Filed 2007·Granted May 11, 2010·41 cites·50 claims
- 0297US10312802B2Charge pump circuitCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2017·Granted Jun 4, 2019·12 cites·20 claims
- 0397US9136755B2Charge pump circuitLESSO JOHN PAUL·Filed 2011·Granted Sep 15, 2015·21 cites·32 claims
- 0497US7102557B1Switched capacitor DACWOLFSON MICROELECTRONICS PLC·Filed 2005·Granted Sep 5, 2006·53 cites·13 claims
- 0596US11398777B2Charge pump circuitCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2021·Granted Jul 26, 2022·2 cites·14 claims
- 0695US9793867B2Method and apparatus for achieving very high-output signal swing from class-D amplifier using fewer componentsESS TECHNOLOGY INC·Filed 2016·Granted Oct 17, 2017·18 cites·10 claims
- 0795US9735672B2Charge pump circuitCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2015·Granted Aug 15, 2017·9 cites·20 claims
- 0895US8890604B2Charge pump circuitLESSO JOHN PAUL·Filed 2012·Granted Nov 18, 2014·12 cites·42 claims
- 0995US7622984B2Charge pump circuit and methods of operation thereofWOLFSON MICROELECTRONICS PLC·Filed 2007·Granted Nov 24, 2009·34 cites·27 claims
- 1094US12002482B2Data transferCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2022·Granted Jun 4, 2024·3 cites·23 claims
- 1194US9685856B2Charge pump circuitCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2016·Granted Jun 20, 2017·6 cites·20 claims
- 1293US11417349B2Data transferCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2020·Granted Aug 16, 2022·3 cites·25 claims
- 1393US11146171B2Charge pump circuitCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2019·Granted Oct 12, 2021·5 cites·19 claims
- 1493US9973157B2Method and apparatus for achieving high-output signal swing from class-D amplifierESS TECHNOLOGY INC·Filed 2016·Granted May 15, 2018·11 cites·13 claims
- 1593US9806684B2Method and apparatus for achieving very high-output signal swing from class-D amplifierESS TECHNOLOGY INC·Filed 2016·Granted Oct 31, 2017·11 cites·16 claims
- 1692US7626445B2Charge pump circuit and methods of operation thereofWOLFSON MICROELECTRONICS PLC·Filed 2007·Granted Dec 1, 2009·34 cites·34 claims
- 1790US9424849B2Data transferCIRRUS LOGIC INT (UK) LTD·Filed 2012·Granted Aug 23, 2016·12 cites·45 claims
- 1889US8363856B2Audio amplifier circuit and electronic apparatus including the sameWolfson Microelectronics ple·Filed 2007·Granted Jan 29, 2013·25 cites·37 claims
- 1989US8183931B2Amplifier circuit and methods of operation thereofLESSO JOHN P·Filed 2010·Granted May 22, 2012·6 cites·13 claims
- 2085US10636431B2Data transferCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2016·Granted Apr 28, 2020·4 cites·14 claims
- 2183US8660277B2Amplifier circuit and methods of operation thereofLESSO JOHN P·Filed 2011·Granted Feb 25, 2014·3 cites·17 claims
- 2283US6600365B1Audio transient suppression circuits and methodsWOLFSON LTD·Filed 2002·Granted Jul 29, 2003·29 cites·24 claims
- 2381US9306448B2Amplifier circuit and methods of operation thereofWOLFSON MICROELECTRONICS PLC·Filed 2014·Granted Apr 5, 2016·3 cites·21 claims
- 2480US11811312B2Charge pump circuitCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2022·Granted Nov 7, 2023·0 cites·20 claims
- 2579US10014769B2Charge pump circuitCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2017·Granted Jul 3, 2018·1 cites·20 claims
- 2679US8373506B2Amplifier circuit and methods of operation thereofWOLFSON MICROELECTRONICS PLC·Filed 2010·Granted Feb 12, 2013·2 cites·17 claims
- 2778US6952176B2Digital-to-analogue converter circuitsWOLFSON MICROELECTRONICS PLC·Filed 2004·Granted Oct 4, 2005·23 cites·11 claims
- 2876US11722057B2Charge pump circuitCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2021·Granted Aug 8, 2023·0 cites·20 claims
- 2976US11652406B2Charge pump circuitCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2021·Granted May 16, 2023·0 cites·17 claims
- 3075US9685855B2Amplifier circuit and methods of operation thereofCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2016·Granted Jun 20, 2017·1 cites·18 claims
- 3174US11652405B2Amplifier circuit and methods of operation thereofCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2021·Granted May 16, 2023·0 cites·20 claims
- 3274US11043894B2Charge pump circuitCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2020·Granted Jun 22, 2021·0 cites·20 claims
- 3371US9391508B2Charge pump circuitWOLFSON LTD·Filed 2014·Granted Jul 12, 2016·1 cites·18 claims
- 3469US7402986B2Power supply circuit for portable battery powered deviceWOLFSON MICROELECTRONICS PLC·Filed 2005·Granted Jul 22, 2008·9 cites·23 claims
- 3567US11031863B2Amplifier circuit and methods of operation thereofCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2019·Granted Jun 8, 2021·0 cites·20 claims
- 3667US10819229B2Charge pump circuitCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2019·Granted Oct 27, 2020·0 cites·20 claims
- 3763US10587187B2Amplifier circuit and methods of operation thereofCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2017·Granted Mar 10, 2020·0 cites·20 claims
- 3859US9673700B2Amplifier circuit and methods of operation thereofCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2016·Granted Jun 6, 2017·0 cites·11 claims
- 3956US2009154733A1Amplifier circuit and methods of operation thereofLESSO JOHN P·Filed 2009·Application pending·0 cites
- 4056US2009212859A1Amplifier circuit and methods of operation thereofLESSO JOHN P·Filed 2009·Application pending·0 cites
- 4155US8279012B2Amplifier circuit and methods of operation thereofLESSO JOHN P·Filed 2010·Granted Oct 2, 2012·0 cites·15 claims
- 4243US2017111743A1Apparatus and Method for Detecting and Driving Headphones Differentially in Mobile ApplicationsESS TECHNOLOGY INC·Filed 2016·Application pending·0 cites
- 4343US2017111742A1Apparatus and Method for Driving Headphones Differentially in Mobile ApplicationsESS TECHNOLOGY INC·Filed 2016·Application pending·0 cites
- 4442US9462368B2Data input on audio device analog output portESS TECHNOLOGY INC·Filed 2015·Granted Oct 4, 2016·0 cites·15 claims
- 4542US2004213350A1Interface format for PCM and DSD devicesFiled 2003·Application pending·0 cites
- 4641US2006017423A1Dual power bus for battery powered deviceFRITH PETER J·Filed 2004·Application pending·0 cites
- 4737US2017280244A1Switchable Four-pole Jack For Supporting Balanced Headphones and Headset Operation in Mobile ApplicationsESS TECHNOLOGY INC·Filed 2017·Application pending·0 cites
- 4835US2011276975A1Audio deviceBROWN NIALL·Filed 2009·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →