Inventor · disambiguated record
Per Ekstrand
Also filed as: EKSTRAND PER · EKSTRAND PER-OLOF S
162 granted patents·15 pending applications·695 citations·filing 1987–2025
99Inventor score
Top patents by PatentIndex Score
177 records- 0198US11417350B2Decoding audio bitstreams with enhanced spectral band replication metadata in at least one fill elementDOLBY INT AB·Filed 2021·Granted Aug 16, 2022·7 cites·9 claims
- 0298US7519538B2Audio signal encoding or decodingKONINKL PHILIPS ELECTRONICS NV·Filed 2004·Granted Apr 14, 2009·230 cites·28 claims
- 0397US11993817B2Oversampling in a combined transposer filterbankDOLBY INT AB·Filed 2023·Granted May 28, 2024·2 cites·3 claims
- 0497US11626121B2Backward-compatible integration of high frequency reconstruction techniques for audio signalsDOLBY INT AB·Filed 2022·Granted Apr 11, 2023·3 cites·8 claims
- 0597US10947594B2Oversampling in a combined transposer filter bankDOLBY INT AB·Filed 2020·Granted Mar 16, 2021·4 cites·3 claims
- 0696US11894002B2Apparatus and method for processing an input audio signal using cascaded filterbanksFRAUNHOFER GES FORSCHUNG·Filed 2022·Granted Feb 6, 2024·2 cites·20 claims
- 0796US11367455B2Decoding audio bitstreams with enhanced spectral band replication metadata in at least one fill elementDOLBY INT AB·Filed 2020·Granted Jun 21, 2022·3 cites·5 claims
- 0896US11289106B2Backward-compatible integration of high frequency reconstruction techniques for audio signalsDOLBY INT AB·Filed 2019·Granted Mar 29, 2022·9 cites·8 claims
- 0996US10818306B2Backward-compatible integration of harmonic transposer for high frequency reconstruction of audio signalsDOLBY INT AB·Filed 2018·Granted Oct 27, 2020·15 cites·9 claims
- 1096US9830928B2Oversampling in a combined transposer filterbankDOLBY INT AB·Filed 2016·Granted Nov 28, 2017·9 cites·20 claims
- 1196US8412365B2Spectral translation/folding in the subband domainLILJERYD LARS·Filed 2010·Granted Apr 2, 2013·49 cites·25 claims
- 1295US10734010B2Decoding audio bitstreams with enhanced spectral band replication metadata in at least one fill elementDOLBY INT AB·Filed 2019·Granted Aug 4, 2020·8 cites·5 claims
- 1395US9384750B2Oversampling in a combined transposer filterbankDOLBY INT AB·Filed 2014·Granted Jul 5, 2016·11 cites·20 claims
- 1495US9245534B2Spectral translation/folding in the subband domainDOLBY INT AB·Filed 2013·Granted Jan 26, 2016·20 cites·8 claims
- 1594US11562755B2Harmonic transposition in an audio coding method and systemDOLBY INT AB·Filed 2021·Granted Jan 24, 2023·3 cites·8 claims
- 1694US11495236B2Apparatus and method for processing an input audio signal using cascaded filterbanksFRAUNHOFER GES FORSCHUNG·Filed 2020·Granted Nov 8, 2022·3 cites·20 claims
- 1794US10584386B2Oversampling in a combined transposer filterbankDOLBY INT AB·Filed 2018·Granted Mar 10, 2020·5 cites·3 claims
- 1894US10453468B2Decoding audio bitstreams with enhanced spectral band replication metadata in at least one fill elementDOLBY INT AB·Filed 2019·Granted Oct 22, 2019·7 cites·8 claims
- 1994US10262669B1Decoding audio bitstreams with enhanced spectral band replication metadata in at least one fill elementDOLBY INT AB·Filed 2018·Granted Apr 16, 2019·8 cites·15 claims
- 2094US10186280B2Oversampling in a combined transposer filterbankDOLBY INT AB·Filed 2017·Granted Jan 22, 2019·5 cites·8 claims
- 2193US12136429B2Harmonic transposition in an audio coding method and systemDOLBY INT AB·Filed 2023·Granted Nov 5, 2024·1 cites·12 claims
- 2293US11591657B2Oversampling in a combined transposer filter bankDOLBY INT AB·Filed 2021·Granted Feb 28, 2023·2 cites·3 claims
- 2393US10943595B2Decoding audio bitstreams with enhanced spectral band replication metadata in at least one fill elementDOLBY INT AB·Filed 2019·Granted Mar 9, 2021·6 cites·9 claims
- 2493US10553232B2Decoding audio bitstreams with enhanced spectral band replication metadata in at least one fill elementDOLBY INT AB·Filed 2018·Granted Feb 4, 2020·6 cites·15 claims
- 2593US10262668B2Decoding audio bitstreams with enhanced spectral band replication metadata in at least one fill elementDOLBY INT AB·Filed 2016·Granted Apr 16, 2019·8 cites·17 claims
- 2693US10134413B2Decoding audio bitstreams with enhanced spectral band replication metadata in at least one fill elementDOLBY INT AB·Filed 2016·Granted Nov 20, 2018·8 cites·8 claims
- 2793US10008213B2Spectral translation/folding in the subband domainDOLBY INT AB·Filed 2017·Granted Jun 26, 2018·7 cites·7 claims
- 2893US8543232B2Spectral translation/folding in the subband domainLILJERYD LARS·Filed 2012·Granted Sep 24, 2013·19 cites·4 claims
- 2992US11837246B2Harmonic transposition in an audio coding method and systemDOLBY INT AB·Filed 2023·Granted Dec 5, 2023·1 cites·12 claims
- 3092US9318118B2Low delay modulated filter bankDOLBY INT AB·Filed 2015·Granted Apr 19, 2016·5 cites·14 claims
- 3192US8971551B2Virtual bass synthesis using harmonic transpositionDOLBY INT AB·Filed 2012·Granted Mar 3, 2015·16 cites·36 claims
- 3291US11594234B2Harmonic transposition in an audio coding method and systemDOLBY INT AB·Filed 2022·Granted Feb 28, 2023·1 cites·12 claims
- 3391US9779748B2Complex-valued filter bank with phase shift for high frequency reconstruction or parametric stereoDOLBY INT AB·Filed 2015·Granted Oct 3, 2017·4 cites·11 claims
- 3491US8880572B2Low delay modulated filter bankEKSTRAND PER·Filed 2010·Granted Nov 4, 2014·8 cites·20 claims
- 3591US2024271217A1Oversampling in a combined transposer filterbankDOLBY INT AB·Filed 2024·Application pending·0 cites
- 3691US2024294987A1Oversampling in a combined transposer filterbankDOLBY INT AB·Filed 2024·Application pending·0 cites
- 3791US2025174241A1Digital filterbank for spectral envelope adjustmentDOLBY INT AB·Filed 2024·Application pending·0 cites
- 3890US8886346B2Oversampling in a combined transposer filter bankVILLEMOES LARS·Filed 2010·Granted Nov 11, 2014·13 cites·21 claims
- 3989US12340819B2Integration of high frequency audio reconstruction techniquesDOLBY INT AB·Filed 2024·Granted Jun 24, 2025·0 cites·5 claims
- 4089US12334102B2Integration of high frequency audio reconstruction techniquesDOLBY INT AB·Filed 2024·Granted Jun 17, 2025·0 cites·5 claims
- 4189US12308040B2Backward-compatible integration of harmonic transposer for high frequency reconstruction of audio signalsDOLBY INT AB·Filed 2024·Granted May 20, 2025·0 cites·3 claims
- 4289US12300263B2Integration of high frequency audio reconstruction techniquesDOLBY INT AB·Filed 2024·Granted May 13, 2025·0 cites·5 claims
- 4388US12394424B2Backward-compatible integration of high frequency reconstruction techniques for audio signalsDOLBY INT AB·Filed 2024·Granted Aug 19, 2025·0 cites·3 claims
- 4488US12300258B2Integration of high frequency reconstruction techniques with reduced post-processing delayDOLBY INT AB·Filed 2024·Granted May 13, 2025·0 cites·5 claims
- 4588US12288564B1Backward-compatible integration of high frequency reconstruction techniques for audio signalsDOLBY INT AB·Filed 2024·Granted Apr 29, 2025·0 cites·8 claims
- 4688US12175993B2Backward-compatible integration of harmonic transposer for high frequency reconstruction of audio signalsDOLBY INT AB·Filed 2024·Granted Dec 24, 2024·0 cites·3 claims
- 4788US10032458B2Apparatus and method for processing an input audio signal using cascaded filterbanksFRAUNHOFER GES FORSCHUNG·Filed 2017·Granted Jul 24, 2018·5 cites·20 claims
- 4888US9672837B2Non-uniform parameter quantization for advanced couplingDOLBY INT AB·Filed 2014·Granted Jun 6, 2017·6 cites·22 claims
- 4988US8260607B2Audio signal encoding or decodingVILLEMOES LARS FALCK·Filed 2011·Granted Sep 4, 2012·8 cites·18 claims
- 5088US2025087226A1Backward-compatible integration of harmonic transposer for high frequency reconstruction of audio signalsDOLBY INT AB·Filed 2024·Application pending·0 cites
Showing the top 50 of 177 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →