Inventor · disambiguated record
James David Johnston
Also filed as: JOHNSTON JAMES · JOHNSTON JAMES D · JOHNSTON JAMES DAVID · JOHNSTON JR JAMES D
101 granted patents·8 pending applications·5,885 citations·filing 1977–2023
99Inventor score
Files withAT & T CORP16LUCENT TECHNOLOGIES INC13AT & T IP II LP11AT & T BELL LAB8IMMERSION NETWORKS INC8
Top patents by PatentIndex Score
109 records- 0199US4741038ASound location arrangementAMERICAN TELEPHONE & TELEGRAPH·Filed 1986·Granted Apr 26, 1988·314 cites·14 claims
- 0298US5627938ARate loop processor for perceptual encoder/decoderLUCENT TECHNOLOGIES INC·Filed 1994·Granted May 6, 1997·236 cites·4 claims
- 0398US5040217APerceptual coding of audio signalsAT & T BELL LAB·Filed 1989·Granted Aug 13, 1991·240 cites·16 claims
- 0497US8073125B2Spatial audio conferencingZHANG ZHENGYOU·Filed 2007·Granted Dec 6, 2011·231 cites·23 claims
- 0597US7630501B2System and method for calibration of an acoustic systemMICROSOFT CORP·Filed 2004·Granted Dec 8, 2009·1.5k cites·52 claims
- 0697USRE39080ERate loop processor for perceptual encoder/decoderLUCENT TECHNOLOGIES INC·Filed 2002·Granted Apr 25, 2006·101 cites·4 claims
- 0796US9728181B2Spatial audio encoding and reproduction of diffuse soundDTS INC·Filed 2015·Granted Aug 8, 2017·20 cites·6 claims
- 0896US6950990B2Navigation tool for accessing workspaces and modules in a graphical user interfaceMICROSOFT CORP·Filed 2001·Granted Sep 27, 2005·184 cites·21 claims
- 0995US8908874B2Spatial audio encoding and reproductionJOHNSTON JAMES D·Filed 2011·Granted Dec 9, 2014·36 cites·34 claims
- 1094US11971268B2Systems and methods for tracking and evaluating fuel consumptions of vehiclesGeotab Inc·Filed 2022·Granted Apr 30, 2024·4 cites·21 claims
- 1194US9042565B2Spatial audio encoding and reproduction of diffuse soundJOT JEAN-MARC·Filed 2011·Granted May 26, 2015·28 cites·8 claims
- 1294US9031268B2Room characterization and correction for multi-channel audioFEJZO ZORAN·Filed 2011·Granted May 12, 2015·33 cites·12 claims
- 1394US6996778B2User interface for managing multiple network resourcesMICROSOFT CORP·Filed 2001·Granted Feb 7, 2006·118 cites·27 claims
- 1494US5285498AMethod and apparatus for coding audio signals based on perceptual modelAT & T BELL LAB·Filed 1992·Granted Feb 8, 1994·412 cites·4 claims
- 1593US10354667B2System and method for processing audio dataImmersion Services LLC·Filed 2017·Granted Jul 16, 2019·6 cites·20 claims
- 1693US10354669B2System and method for processing audio dataImmersion Services LLC·Filed 2017·Granted Jul 16, 2019·6 cites·20 claims
- 1793US9530421B2Encoding and reproduction of three dimensional audio soundtracksJOT JEAN-MARC·Filed 2012·Granted Dec 27, 2016·42 cites·19 claims
- 1893US6845163B1Microphone array for preserving soundfield perceptual cuesAT & T CORP·Filed 2000·Granted Jan 18, 2005·68 cites·4 claims
- 1993US5136377AAdaptive non-linear quantizerAT & T BELL LAB·Filed 1990·Granted Aug 4, 1992·146 cites·31 claims
- 2092US11455842B1Systems and methods for determining a vehicle alternator conditionGeotab Inc·Filed 2022·Granted Sep 27, 2022·4 cites·20 claims
- 2192US10354668B2System and method for processing audio dataImmersion Services LLC·Filed 2017·Granted Jul 16, 2019·6 cites·21 claims
- 2292US9641952B2Room characterization and correction for multi-channel audioDTS INC·Filed 2015·Granted May 2, 2017·11 cites·9 claims
- 2392US8620009B2Virtual sound source positioningZHANG ZHENGYOU·Filed 2008·Granted Dec 31, 2013·30 cites·20 claims
- 2492US7689921B2User interface for managing multiple network resourcesMICROSOFT CORP·Filed 2006·Granted Mar 30, 2010·28 cites·12 claims
- 2592US5481614AMethod and apparatus for coding audio signals based on perceptual modelAT & T CORP·Filed 1993·Granted Jan 2, 1996·117 cites·7 claims
- 2691US8144902B2Stereo image wideningJOHNSTON JAMES D·Filed 2007·Granted Mar 27, 2012·31 cites·20 claims
- 2791US7835904B2Perceptual, scalable audio compressionMICROSOFT CORP·Filed 2006·Granted Nov 16, 2010·38 cites·19 claims
- 2891US5341457APerceptual coding of audio signalsAT & T BELL LAB·Filed 1993·Granted Aug 23, 1994·129 cites·17 claims
- 2990US7131007B1System and method of retrieving a watermark within a signalAT & T CORP·Filed 2002·Granted Oct 31, 2006·53 cites·13 claims
- 3090US6771777B1Process for coding and decoding stereophonic spectral valuesFRAUNHOFER GES FORSCHUNG·Filed 1997·Granted Aug 3, 2004·141 cites·20 claims
- 3190US5732189AAudio signal coding with a signal adaptive filterbankLUCENT TECHNOLOGIES INC·Filed 1995·Granted Mar 24, 1998·115 cites·6 claims
- 3290US5309526AImage processing systemAT & T BELL LAB·Filed 1991·Granted May 3, 1994·102 cites·14 claims
- 3389US8103008B2Loudness-based compensation for background noiseJOHNSTON JAMES D·Filed 2007·Granted Jan 24, 2012·16 cites·23 claims
- 3489US5227788AMethod and apparatus for two-component signal compressionAT & T BELL LAB·Filed 1992·Granted Jul 13, 1993·72 cites·14 claims
- 3588US8275152B2Dynamic bass boost filterSMIRNOV SERGE·Filed 2007·Granted Sep 25, 2012·18 cites·20 claims
- 3688US5535300APerceptual coding of audio signals using entropy coding and/or multiple power spectraAT & T CORP·Filed 1994·Granted Jul 9, 1996·159 cites·6 claims
- 3787US10339947B2System and method for processing audio dataImmersion Services LLC·Filed 2017·Granted Jul 2, 2019·3 cites·20 claims
- 3886US10861474B2System and method for processing audio dataIMMERSION NETWORKS INC·Filed 2019·Granted Dec 8, 2020·3 cites·16 claims
- 3986US8300849B2Perceptually weighted digital audio level compressionSMIRNOV SERGE·Filed 2007·Granted Oct 30, 2012·14 cites·22 claims
- 4086US7802101B2System and method of retrieving a watermark within a signalAT & T IP II LP·Filed 2009·Granted Sep 21, 2010·12 cites·19 claims
- 4186US7725808B1System and method for representing compressed informationAT & T IP II LP·Filed 2008·Granted May 25, 2010·7 cites·17 claims
- 4284US11473545B1Devices and methods for determining a vehicle alternator conditionGeotab Inc·Filed 2022·Granted Oct 18, 2022·1 cites·20 claims
- 4384US7529941B1System and method of retrieving a watermark within a signalAT & T IP II LP·Filed 2006·Granted May 5, 2009·11 cites·15 claims
- 4484USRE36714EPerceptual coding of audio signalsLUCENT TECHNOLOGIES INC·Filed 1994·Granted May 23, 2000·44 cites·17 claims
- 4584US4449190ASilence editing speech processorBELL TELEPHONE LABOR INC·Filed 1982·Granted May 15, 1984·59 cites·15 claims
- 4683US12080303B2System and method for processing audio data into a plurality of frequency componentsIMMERSION NETWORKS INC·Filed 2023·Granted Sep 3, 2024·0 cites·20 claims
- 4782US7548790B1Effective deployment of temporal noise shaping (TNS) filtersAT & T IP II LP·Filed 2005·Granted Jun 16, 2009·9 cites·9 claims
- 4881US8861927B2Digital media universal elementary streamSIRIVARA SUDHEER·Filed 2012·Granted Oct 14, 2014·9 cites·20 claims
- 4981US7146503B1System and method of watermarking signalAT & T CORP·Filed 2002·Granted Dec 5, 2006·26 cites·29 claims
- 5081US5517581APerceptually-adapted image coding systemAT & T CORP·Filed 1995·Granted May 14, 1996·69 cites·15 claims
Showing the top 50 of 109 patent records by PatentIndex Score.
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