Duttweiler; Donald L.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Duttweiler; Donald L..The latest application filed is for "acoustic echo canceler".
- Duttweiler; Donald L. - Rumson NJ
- Duttweiler; Donald L. - Colts Neck NJ
| Patent | Date |
|---|---|
| Acoustic echo canceler Grant 5,631,899 - Duttweiler May 20, 1 | 1997-05-20 |
| Efficient encoding/decoding in the decomposition and recomposition of a high resolution image utilizing pixel clusters Grant 5,031,053 - Chamzas , et al. July 9, 1 | 1991-07-09 |
| Entropy encoder/decoder including a context extractor Grant 5,023,611 - Chamzas , et al. June 11, 1 | 1991-06-11 |
| Method and apparatus for carry-over control in arithmetic entropy coding Grant 4,973,961 - Chamzas , et al. November 27, 1 | 1990-11-27 |
| Progressive transmission of high resolution two-tone facsimile images Grant 4,870,497 - Chamzas , et al. September 26, 1 | 1989-09-26 |
| Adaptive filter including signal path compensation Grant 4,731,834 - Duttweiler , et al. March 15, 1 | 1988-03-15 |
| Adaptive filter update gain normalization Grant 4,591,669 - Duttweiler , et al. May 27, 1 | 1986-05-27 |
| Subsampling delay estimator for an echo canceler Grant 4,562,312 - Duttweiler December 31, 1 | 1985-12-31 |
| Adaptive filter including a far end energy discriminator Grant 4,491,701 - Duttweiler , et al. January 1, 1 | 1985-01-01 |
| Adaptive filter update normalization Grant 4,468,641 - Duttweiler , et al. August 28, 1 | 1984-08-28 |
| .mu.-Law to floating point converter Grant 4,189,715 - Duttweiler February 19, 1 | 1980-02-19 |
| Echo canceller using feedback to improve speech detector performance Grant 4,129,753 - Duttweiler December 12, 1 | 1978-12-12 |
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