Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6301556 | Reducing sparseness in coded speech signals | Roar Hagen, Björn Johansson, Erik Ekudden | 2001-10-09 |
| 6029125 | Reducing sparseness in coded speech signals | Roar Hagen, Björn Johansson, Erik Ekudden | 2000-02-22 |
| 4797926 | Digital speech vocoder | Edward C. Bronson, Walter T. Hartwell, Dimitrios P. Prezas | 1989-01-10 |
| 4771465 | Digital speech sinusoidal vocoder with transmission of only subset of harmonics | Edward C. Bronson, Walter T. Hartwell, Thomas E. Jacobs, Richard Harry Ketchum | 1988-09-13 |