Donald L. Duttweiler

Person

Rumson, NJ, US

People

Patents Grantslast 30 patents

Information Patent Grant
Quadrature filter augmentation of echo canceler basis functions
- Patent number 6,813,352
- Issue date Nov 2, 2004
- Lucent Technologies Inc.
- Donald Lars Duttweiler
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Echo cancellation in the network for data applications
- Patent number 6,628,780
- Issue date Sep 30, 2003
- Lucent Technologies Inc.
- Donald Lars Duttweiler
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
High order SINC filter
- Patent number 6,604,119
- Issue date Aug 5, 2003
- Lucent Technologies Inc.
- Donald Duttweiler
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Data optimized codec
- Patent number 6,356,593
- Issue date Mar 12, 2002
- Lucent Technologies Inc.
- Nuri Ruhi Dagedeviren
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Adaptive filter
- Patent number 5,951,626
- Issue date Sep 14, 1999
- Lucent Technologies Inc.
- Donald Lars Duttweiler
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Video conferencing system and method for providing enhanced interac...
- Patent number 5,818,514
- Issue date Oct 6, 1998
- Lucent Technologies Inc.
- Donald Lars Duttweiler
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Intelligent near-end speech detection
- Patent number 5,752,229
- Issue date May 12, 1998
- Lucent Technologies Inc.
- Donald Lars Duttweiler
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Echo canceler E-side speech detector
- Patent number 5,668,865
- Issue date Sep 16, 1997
- Lucent Technologies Inc.
- Donald Lars Duttweiler
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Acoustic echo canceler
- Patent number 5,631,899
- Issue date May 20, 1997
- Lucent Technologies Inc.
- Donald L. Duttweiler
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Subband echo canceler
- Patent number 5,566,167
- Issue date Oct 15, 1996
- Lucent Technologies Inc.
- Donald L. Duttweiler
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Efficient encoding/decoding in the decomposition and recomposition...
- Patent number 5,031,053
- Issue date Jul 9, 1991
- AT&T Bell Laboratories
- Christodoulos Chamzas
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Adaptive probability estimator for entropy encoding/decoding
- Patent number 5,025,258
- Issue date Jun 18, 1991
- AT&T Bell Laboratories
- Donald L. Duttweiler
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Entropy encoder/decoder including a context extractor
- Patent number 5,023,611
- Issue date Jun 11, 1991
- AT&T Bell Laboratories
- Christodoulos Chamzas
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Efficient encoding/decoding in the decomposition and recomposition...
- Patent number 4,979,049
- Issue date Dec 18, 1990
- AT&T Bell Laboratories
- Christodoulos Chamzas
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and apparatus for carry-over control in arithmetic entropy c...
- Patent number 4,973,961
- Issue date Nov 27, 1990
- AT&T Bell Laboratories
- Christosdoulos Chamzas
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Progressive transmission of high resolution two-tone facsimile images
- Patent number 4,870,497
- Issue date Sep 26, 1989
- American Telephone and Telegraph Company
- Christodoulos Chamzas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Adaptive filter including signal path compensation
- Patent number 4,731,834
- Issue date Mar 15, 1988
- American Telephone and Telegraph Company, AT&T Bell Laboratories
- Donald L. Duttweiler
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Adaptive filter update gain normalization
- Patent number 4,591,669
- Issue date May 27, 1986
- AT&T Bell Laboratories
- Donald L. Duttweiler
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Subsampling delay estimator for an echo canceler
- Patent number 4,562,312
- Issue date Dec 31, 1985
- AT&T Bell Laboratories
- Donald L. Duttweiler
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Adaptive filter including a far end energy discriminator
- Patent number 4,491,701
- Issue date Jan 1, 1985
- AT&T Bell Laboratories
- Donald L. Duttweiler
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Adaptive filter update normalization
- Patent number 4,468,641
- Issue date Aug 28, 1984
- AT&T Bell Laboratories
- Donald L. Duttweiler
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
ECHO CANCELLATION IN THE NETWORK FOR DATA APPLICATIONS
- Publication number 20020057790
- Publication date May 16, 2002
- DONALD LARS DUTTWEILER
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Donald L. Duttweiler

Person

Patents Grantslast 30 patents

Quadrature filter augmentation of echo canceler basis functions

Echo cancellation in the network for data applications

High order SINC filter

Data optimized codec

Adaptive filter

Video conferencing system and method for providing enhanced interac...

Intelligent near-end speech detection

Echo canceler E-side speech detector

Acoustic echo canceler

Subband echo canceler

Efficient encoding/decoding in the decomposition and recomposition...

Adaptive probability estimator for entropy encoding/decoding

Entropy encoder/decoder including a context extractor

Efficient encoding/decoding in the decomposition and recomposition...

Method and apparatus for carry-over control in arithmetic entropy c...

Progressive transmission of high resolution two-tone facsimile images

Adaptive filter including signal path compensation

Adaptive filter update gain normalization

Subsampling delay estimator for an echo canceler

Adaptive filter including a far end energy discriminator

Adaptive filter update normalization

Patents Applicationslast 30 patents

ECHO CANCELLATION IN THE NETWORK FOR DATA APPLICATIONS