Inventor · disambiguated record
Donald L. Duttweiler
Also filed as: DUTTWEILER DONALD · DUTTWEILER DONALD L · DUTTWEILER DONALD LARS
27 granted patents·1,030 citations·filing 1974–1999
97Inventor score
Files withLUCENT TECHNOLOGIES INC10AT & T BELL LAB9BELL TELEPHONE LABOR INC6AMERICAN TELEPHONE & TELEGRAPH2
Top patents by PatentIndex Score
27 records- 0195US5025258AAdaptive probability estimator for entropy encoding/decodingAT & T BELL LAB·Filed 1989·Granted Jun 18, 1991·105 cites·27 claims
- 0291US5023611AEntropy encoder/decoder including a context extractorAT & T BELL LAB·Filed 1989·Granted Jun 11, 1991·118 cites·20 claims
- 0390US5818514AVideo conferencing system and method for providing enhanced interactive communicationLUCENT TECHNOLOGIES INC·Filed 1994·Granted Oct 6, 1998·106 cites·13 claims
- 0487US4870497AProgressive transmission of high resolution two-tone facsimile imagesAMERICAN TELEPHONE & TELEGRAPH·Filed 1988·Granted Sep 26, 1989·67 cites·22 claims
- 0586US4973961AMethod and apparatus for carry-over control in arithmetic entropy codingAT & T BELL LAB·Filed 1990·Granted Nov 27, 1990·86 cites·17 claims
- 0683US5566167ASubband echo cancelerLUCENT TECHNOLOGIES INC·Filed 1995·Granted Oct 15, 1996·79 cites·19 claims
- 0781US4243959AAdaptive filter with tap coefficient leakageBELL TELEPHONE LABOR INC·Filed 1979·Granted Jan 6, 1981·30 cites·4 claims
- 0881US3945002ABlock digital processor for use with nonuniformly encoded digital wordsBELL TELEPHONE LABOR INC·Filed 1974·Granted Mar 16, 1976·26 cites·11 claims
- 0980US4129753AEcho canceller using feedback to improve speech detector performanceBELL TELEPHONE LABOR INC·Filed 1977·Granted Dec 12, 1978·30 cites·7 claims
- 1077US4591669AAdaptive filter update gain normalizationAT & T BELL LAB·Filed 1984·Granted May 27, 1986·39 cites·17 claims
- 1174US5631899AAcoustic echo cancelerLUCENT TECHNOLOGIES INC·Filed 1995·Granted May 20, 1997·69 cites·7 claims
- 1273US5031053AEfficient encoding/decoding in the decomposition and recomposition of a high resolution image utilizing pixel clustersAT & T BELL LAB·Filed 1989·Granted Jul 9, 1991·27 cites·23 claims
- 1373US4562312ASubsampling delay estimator for an echo cancelerAT & T BELL LAB·Filed 1983·Granted Dec 31, 1985·31 cites·16 claims
- 1472US4095053AQuasi-pulse stuffing synchronizationBELL TELEPHONE LABOR INC·Filed 1977·Granted Jun 13, 1978·22 cites·4 claims
- 1570US4189715Aμ-Law to floating point converterBELL TELEPHONE LABOR INC·Filed 1978·Granted Feb 19, 1980·14 cites·4 claims
- 1666US4491701AAdaptive filter including a far end energy discriminatorAT & T BELL LAB·Filed 1981·Granted Jan 1, 1985·25 cites·15 claims
- 1764US4979049AEfficient encoding/decoding in the decomposition and recomposition of a high resolution image utilizing its low resolution replicaAT & T BELL LAB·Filed 1989·Granted Dec 18, 1990·35 cites·26 claims
- 1863US5951626AAdaptive filterLUCENT TECHNOLOGIES INC·Filed 1997·Granted Sep 14, 1999·18 cites·10 claims
- 1952US4731834AAdaptive filter including signal path compensationAMERICAN TELEPHONE & TELEGRAPH·Filed 1986·Granted Mar 15, 1988·17 cites·8 claims
- 2051US5668865AEcho canceler E-side speech detectorLUCENT TECHNOLOGIES INC·Filed 1996·Granted Sep 16, 1997·24 cites·14 claims
- 2151US3990073ADigital signal processing arrangement using a cascaded integrator function generatorBELL TELEPHONE LABOR INC·Filed 1974·Granted Nov 2, 1976·7 cites·9 claims
- 2249US6813352B1Quadrature filter augmentation of echo canceler basis functionsLUCENT TECHNOLOGIES INC·Filed 1999·Granted Nov 2, 2004·15 cites·25 claims
- 2342US5752229AIntelligent near-end speech detectionLUCENT TECHNOLOGIES INC·Filed 1996·Granted May 12, 1998·12 cites·13 claims
- 2442US4468641AAdaptive filter update normalizationAT & T BELL LAB·Filed 1982·Granted Aug 28, 1984·9 cites·9 claims
- 2537US6628780B2Echo cancellation in the network for data applicationsLUCENT TECHNOLOGIES INC·Filed 1997·Granted Sep 30, 2003·7 cites·24 claims
- 2634US6604119B1High order SINC filterLUCENT TECHNOLOGIES INC·Filed 1999·Granted Aug 5, 2003·5 cites·10 claims
- 2732US6356593B1Data optimized codecLUCENT TECHNOLOGIES INC·Filed 1998·Granted Mar 12, 2002·7 cites·23 claims
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