Inventor · disambiguated record
Heiko Purnhagen
Also filed as: PURNHAGEN HEIKO · PURNHAGEN HEIKO JONAS
292 granted patents·22 pending applications·1,436 citations·filing 2000–2025
99Inventor score
Files withDOLBY INT AB223DOLBY LABORATORIES LICENSING CORP37CODING TECH AB7ENGDEGARD JONAS6FRAUNHOFER GES FORSCHUNG6
Top patents by PatentIndex Score
314 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
- 0298US7916873B2Stereo compatible multi-channel audio codingCODING TECH AB·Filed 2005·Granted Mar 29, 2011·69 cites·14 claims
- 0398US7519538B2Audio signal encoding or decodingKONINKL PHILIPS ELECTRONICS NV·Filed 2004·Granted Apr 14, 2009·230 cites·28 claims
- 0497US11626121B2Backward-compatible integration of high frequency reconstruction techniques for audio signalsDOLBY INT AB·Filed 2022·Granted Apr 11, 2023·3 cites·8 claims
- 0597US11184709B2Audio decoder for audio channel reconstructionDOLBY INT AB·Filed 2020·Granted Nov 23, 2021·4 cites·7 claims
- 0697US10475459B2Audio upmixer operable in prediction or non-prediction modeDOLBY INT AB·Filed 2019·Granted Nov 12, 2019·6 cites·16 claims
- 0797US8223976B2Apparatus and method for generating a level parameter and apparatus and method for generating a multi-channel representationPURNHAGEN HEIKO·Filed 2006·Granted Jul 17, 2012·46 cites·4 claims
- 0896US11367455B2Decoding 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
- 0996US11289106B2Backward-compatible integration of high frequency reconstruction techniques for audio signalsDOLBY INT AB·Filed 2019·Granted Mar 29, 2022·9 cites·8 claims
- 1096US11024320B2Audio encoder and decoderDOLBY INT AB·Filed 2020·Granted Jun 1, 2021·3 cites·20 claims
- 1196US10818306B2Backward-compatible integration of harmonic transposer for high frequency reconstruction of audio signalsDOLBY INT AB·Filed 2018·Granted Oct 27, 2020·15 cites·9 claims
- 1296US8693696B2Apparatus and method for generating a level parameter and apparatus and method for generating a multi-channel representationPURNHAGEN HEIKO·Filed 2010·Granted Apr 8, 2014·21 cites·7 claims
- 1396US8655670B2Audio encoder, audio decoder and related methods for processing multi-channel audio signals using complex predictionFRAUNHOFER GES FORSCHUNG·Filed 2012·Granted Feb 18, 2014·72 cites·22 claims
- 1496US7983922B2Apparatus and method for generating multi-channel synthesizer control signal and apparatus and method for multi-channel synthesizingFRAUNHOFER GES FORSCHUNG·Filed 2005·Granted Jul 19, 2011·108 cites·31 claims
- 1596US7668722B2Multi parametrisation based multi-channel reconstructionCODING TECH AB·Filed 2005·Granted Feb 23, 2010·78 cites·43 claims
- 1695US11943605B2Spatial audio signal manipulationDOLBY LABORATORIES LICENSING CORP·Filed 2022·Granted Mar 26, 2024·2 cites·16 claims
- 1795US11277707B2Spatial audio signal manipulationDOLBY LABORATORIES LICENSING CORP·Filed 2020·Granted Mar 15, 2022·3 cites·16 claims
- 1895US10734010B2Decoding 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
- 1995US7986789B2Method for representing multi-channel audio signalsCODING TECH AB·Filed 2006·Granted Jul 26, 2011·29 cites·28 claims
- 2094US11594233B2Audio encoder and decoderDOLBY INT AB·Filed 2021·Granted Feb 28, 2023·2 cites·7 claims
- 2194US10453468B2Decoding 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
- 2294US10297259B2Advanced stereo coding based on a combination of adaptively selectable left/right or mid/side stereo coding and of parametric stereo codingDOLBY INT AB·Filed 2018·Granted May 21, 2019·8 cites·14 claims
- 2394US10262669B1Decoding 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
- 2494US9905230B2Advanced stereo coding based on a combination of adaptively selectable left/right or mid/side stereo coding and of parametric stereo codingDOLBY INT AB·Filed 2015·Granted Feb 27, 2018·11 cites·15 claims
- 2594US8494863B2Audio encoder and decoder with long term predictionBISWAS ARIJIT·Filed 2008·Granted Jul 23, 2013·48 cites·31 claims
- 2694US8019350B2Audio coding using de-correlated signalsCODING TECH AB·Filed 2005·Granted Sep 13, 2011·41 cites·19 claims
- 2794US7974847B2Advanced methods for interpolation and parameter signallingCODING TECH AB·Filed 2005·Granted Jul 5, 2011·50 cites·31 claims
- 2893US10943595B2Decoding 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
- 2993US10553232B2Decoding 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
- 3093US10262668B2Decoding 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
- 3193US10134413B2Decoding 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
- 3293US8929558B2Audio signal of an FM stereo radio receiver by using parametric stereoENGDEGARD JONAS·Filed 2010·Granted Jan 6, 2015·19 cites·34 claims
- 3392US8687829B2Apparatus and method for multi-channel parameter transformationHILPERT JOHANNES·Filed 2007·Granted Apr 1, 2014·37 cites·26 claims
- 3491US12494211B2Processing parametrically coded audioDOLBY LABORATORIES LICENSING CORP·Filed 2021·Granted Dec 9, 2025·2 cites·19 claims
- 3591US10290304B2Reconstruction of audio scenes from a downmixDOLBY INT AB·Filed 2017·Granted May 14, 2019·7 cites·15 claims
- 3691US8515759B2Apparatus and method for synthesizing an output signalENGDEGARD JONAS·Filed 2008·Granted Aug 20, 2013·32 cites·27 claims
- 3790US10623860B2Audio decoder for audio channel reconstructionDOLBY INT AB·Filed 2019·Granted Apr 14, 2020·3 cites·7 claims
- 3890US10499155B2Audio decoder for audio channel reconstructionDOLBY INT AB·Filed 2019·Granted Dec 3, 2019·3 cites·13 claims
- 3990US9911434B2Audio decoder utilizing sample rate conversion for audio and video frame synchronizationDOLBY INT AB·Filed 2014·Granted Mar 6, 2018·11 cites·16 claims
- 4090US9892736B2MDCT-based complex prediction stereo codingDOLBY INT AB·Filed 2015·Granted Feb 13, 2018·3 cites·14 claims
- 4190US9191045B2Prediction-based FM stereo radio noise reductionDOLBY INT AB·Filed 2012·Granted Nov 17, 2015·20 cites·32 claims
- 4290US8150042B2Method, device, encoder apparatus, decoder apparatus and audio systemVAN LOON MACHIEL WILLEM·Filed 2005·Granted Apr 3, 2012·31 cites·17 claims
- 4389US12340819B2Integration of high frequency audio reconstruction techniquesDOLBY INT AB·Filed 2024·Granted Jun 24, 2025·0 cites·5 claims
- 4489US12334102B2Integration of high frequency audio reconstruction techniquesDOLBY INT AB·Filed 2024·Granted Jun 17, 2025·0 cites·5 claims
- 4589US12308040B2Backward-compatible integration of harmonic transposer for high frequency reconstruction of audio signalsDOLBY INT AB·Filed 2024·Granted May 20, 2025·0 cites·3 claims
- 4689US12300263B2Integration of high frequency audio reconstruction techniquesDOLBY INT AB·Filed 2024·Granted May 13, 2025·0 cites·5 claims
- 4789US9489957B2Audio encoder and decoderDOLBY INT AB·Filed 2014·Granted Nov 8, 2016·7 cites·20 claims
- 4888US12394424B2Backward-compatible integration of high frequency reconstruction techniques for audio signalsDOLBY INT AB·Filed 2024·Granted Aug 19, 2025·0 cites·3 claims
- 4988US12300258B2Integration of high frequency reconstruction techniques with reduced post-processing delayDOLBY INT AB·Filed 2024·Granted May 13, 2025·0 cites·5 claims
- 5088US12288564B1Backward-compatible integration of high frequency reconstruction techniques for audio signalsDOLBY INT AB·Filed 2024·Granted Apr 29, 2025·0 cites·8 claims
Showing the top 50 of 314 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →