Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881267 | Encoder of a multi-pulse type capable of optimizing the number of excitation pulses and quantization level | — | 1989-11-14 |
| 4852172 | Speech recognition system | — | 1989-07-25 |
| 4817141 | Confidential communication system | — | 1989-03-28 |
| 4815135 | Speech signal processor | — | 1989-03-21 |