Inventor · disambiguated record
Carl Scarpa
Also filed as: SCARPA CARL · SCARPA CARL G
57 granted patents·9 pending applications·2,077 citations·filing 1992–2024
99Inventor score
Top patents by PatentIndex Score
66 records- 0198US5325204ANarrowband interference cancellation through the use of digital recursive notch filtersHITACHI AMERICA LTD·Filed 1993·Granted Jun 28, 1994·357 cites·8 claims
- 0298US5282023AApparatus for NTSC signal interference cancellation through the use of digital recursive notch filtersHITACHI AMERICA LTD·Filed 1992·Granted Jan 25, 1994·413 cites·51 claims
- 0396US11463234B2Maintaining repeater accuracy for satellite signal delivery systemsSIRIUS XM RADIO INC·Filed 2021·Granted Oct 4, 2022·3 cites·8 claims
- 0495US5400084AMethod and apparatus for NTSC signal interference cancellation using recursive digital notch filtersHITACHI AMERICA LTD·Filed 1993·Granted Mar 21, 1995·181 cites·20 claims
- 0594US11973492B2Universal automatic frequency control for multi-channel receiversSIRIUS XM RADIO INC·Filed 2022·Granted Apr 30, 2024·2 cites·7 claims
- 0694US5673293AMethod and apparatus for demodulating QAM and VSB signalsHITACHI AMERICA LTD·Filed 1994·Granted Sep 30, 1997·136 cites·22 claims
- 0793US12028439B2Maintaining repeater accuracy for satellite signal delivery systemsSIRIUS XM RADIO INC·Filed 2022·Granted Jul 2, 2024·1 cites·17 claims
- 0893US11444602B2Universal automatic frequency control for multi-channel receiversSIRIUS XM RADIO INC·Filed 2020·Granted Sep 13, 2022·3 cites·13 claims
- 0993US6668027B1Self adjusting automatic gain control (AGC) power reference level circuitHITACHI AMERICA LTD·Filed 2000·Granted Dec 23, 2003·66 cites·26 claims
- 1092US5563916AApparatus and method for varying the slew rate of a digital automatic gain control circuitHITACHI AMERICA LTD·Filed 1995·Granted Oct 8, 1996·86 cites·18 claims
- 1189US12021677B2Method and apparatus for advanced OFDM triggering techniquesSIRIUS XM RADIO INC·Filed 2022·Granted Jun 25, 2024·1 cites·8 claims
- 1289US10903974B2Maintaining repeater accuracy for satellite signal delivery systemsSIRIUS XM RADIO INC·Filed 2019·Granted Jan 26, 2021·5 cites·14 claims
- 1388US10812310B1Method and apparatus for advanced OFDM triggering techniquesSIRIUS XM RADIO INC·Filed 2019·Granted Oct 20, 2020·4 cites·20 claims
- 1488US5694419AShared resource modulator-demodulator circuits for use with vestigial sideband signalsHITACHI AMERICA LTD·Filed 1995·Granted Dec 2, 1997·108 cites·30 claims
- 1587US10693442B1Universal automatic frequency control for multi-channel receiversSIRIUS XM RADIO INC·Filed 2019·Granted Jun 23, 2020·3 cites·20 claims
- 1686US7139340B2Robust OFDM carrier recovery methods and apparatusHITACHI LTD·Filed 2002·Granted Nov 21, 2006·46 cites·33 claims
- 1786US7006040B2Steerable antenna and receiver interface for terrestrial broadcastHITACHI HOME ELECTRONICS AMERI·Filed 2001·Granted Feb 28, 2006·38 cites·53 claims
- 1885US5487186AAutomatic frequency control using split-band signal strength measurementsHITACHI AMERICA LTD·Filed 1995·Granted Jan 23, 1996·85 cites·22 claims
- 1985US2025175320A1Maintaining repeater accuracy for satellite signal delivery systemsSIRIUS XM RADIO INC·Filed 2024·Application pending·0 cites
- 2083US11336497B2Method and apparatus for advanced OFDM triggering techniquesSIRIUS XM RADIO INC·Filed 2020·Granted May 17, 2022·1 cites·10 claims
- 2183US8184743B2Overlay modulation technique for COFDM signals based on amplitude offsetsSCARPA CARL·Filed 2008·Granted May 22, 2012·8 cites·10 claims
- 2283US5636250AAutomatic VSB/QAM modulation recognition method and apparatusHITACHI AMERICA LTD·Filed 1994·Granted Jun 3, 1997·60 cites·20 claims
- 2382US5557337AAutomatic television signal detector to differentiate NTSC signals from HDJV/AJV signalsHITACHI AMERICA LTD·Filed 1994·Granted Sep 17, 1996·52 cites·16 claims
- 2481US8260192B2Methods and apparatus for interoperable satellite radio receiversSCARPA CARL·Filed 2008·Granted Sep 4, 2012·6 cites·24 claims
- 2581US2025168050A1Method and apparatus for advanced ofdm triggering techniquesSIRIUS XM RADIO INC·Filed 2024·Application pending·0 cites
- 2679US7209433B2Channel estimation and compensation techniques for use in frequency division multiplexed systemsHITACHI LTD·Filed 2002·Granted Apr 24, 2007·27 cites·13 claims
- 2779US5388127ADigital timing recovery circuitHITACHI AMERICA LTD·Filed 1993·Granted Feb 7, 1995·92 cites·15 claims
- 2877US5325188AApparatus for NTSC signal interference cancellation through the use of digital recursive notch filtersHITACHI AMERICA LTD·Filed 1993·Granted Jun 28, 1994·41 cites·19 claims
- 2976US12166617B2Dynamic trigger compensation in OFDM systemsSIRIUS XM RADIO INC·Filed 2023·Granted Dec 10, 2024·0 cites·10 claims
- 3074US7742750B2Systems and methods for antenna diversity combining for satellite radio signalsSIRIUS XM RADIO INC·Filed 2006·Granted Jun 22, 2010·5 cites·20 claims
- 3171US7173991B2Methods and apparatus for spectral filtering channel estimatesHITACHI LTD·Filed 2002·Granted Feb 6, 2007·15 cites·18 claims
- 3269US5692013AShared resources modulator-demodulator circuits for use with quadrature amplitude modulated signalsHITACHI AMERICA LTD·Filed 1995·Granted Nov 25, 1997·69 cites·30 claims
- 3368US11689408B2Dynamic trigger compensation in OFDM systemsSIRIUS XM RADIO INC·Filed 2021·Granted Jun 27, 2023·0 cites·10 claims
- 3466US6052701AMethods of performing interpolation using frequency shifting operations and filtersHITACHI AMERICA LTD·Filed 1998·Granted Apr 18, 2000·42 cites·17 claims
- 3563US10999116B1Dynamic trigger compensation in OFDM systemsSIRIUS XM RADIO INC·Filed 2019·Granted May 4, 2021·0 cites·20 claims
- 3662US5783974ADigital interpolation up sampling circuit and digital modulator using sameHITACHI AMERICA LTD·Filed 1997·Granted Jul 21, 1998·46 cites·23 claims
- 3762US2022231754A1System and methods to reclaim unused throughput in an sdars systemSIRIUS XM RADIO INC·Filed 2021·Application pending·0 cites
- 3859US5978420AMethods and apparatus for implementing a digital modulatorHITACHI AMERICA LTD·Filed 1998·Granted Nov 2, 1999·30 cites·6 claims
- 3957US11108460B2System and methods to reclaim unused throughput in an SDARS systemSIRIUS XM RADIO INC·Filed 2018·Granted Aug 31, 2021·0 cites·18 claims
- 4057US8650450B2Method and apparatus for interleaving low density parity check (LDPC) codes over mobile satellite channelsSCARPA CARL·Filed 2008·Granted Feb 11, 2014·2 cites·25 claims
- 4157US7633441B2Steerable antenna and receiver interface for terrestrial broadcastHITACHI AMERICA LTD·Filed 2007·Granted Dec 15, 2009·1 cites·11 claims
- 4256US8457037B2Method to minimize interference into legacy SDARS reception by varying overlay modulation as a function of satellite positionSCARPA CARL·Filed 2009·Granted Jun 4, 2013·0 cites·13 claims
- 4355US10063398B2Overlay modulation technique of COFDM signals based on amplitude offsetsSIRIUS XM RADIO INC·Filed 2016·Granted Aug 28, 2018·0 cites·20 claims
- 4455US8983364B2Methods and apparatus for interoperable satellite radio receiversSIRIUS XM RADIO INC·Filed 2013·Granted Mar 17, 2015·0 cites·17 claims
- 4555US8306145B2Overlay modulation of COFDM using phase and amplitude offset carriersSCARPA CARL·Filed 2009·Granted Nov 6, 2012·0 cites·21 claims
- 4653US5444743ASynchronous pulse generatorHITACHI AMERICA LTD·Filed 1993·Granted Aug 22, 1995·24 cites·38 claims
- 4752US9473335B2Overlay modulation technique for COFDM signals based on amplitude offsetsSCARPA CARL·Filed 2012·Granted Oct 18, 2016·0 cites·20 claims
- 4852US8923429B2Overlay modulation of COFDM using phase and amplitude offset carriersSIRIUS XM RADIO INC·Filed 2012·Granted Dec 30, 2014·0 cites·15 claims
- 4952US8391132B2Slow speed mute resistance via selective COFDM bin loadingSCARPA CARL·Filed 2009·Granted Mar 5, 2013·0 cites·13 claims
- 5051US8630578B2Methods and apparatus for interoperable satellite radio receiversSCARPA CARL·Filed 2012·Granted Jan 14, 2014·0 cites·25 claims
Showing the top 50 of 66 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →