Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6181739 | Signal-to-noise ratio determination using digital signal processing | Olof Tomas Backstrom, Lars Wahlstrom | 2001-01-30 |
| 5953660 | Supervisory audio tone detection using digital signal processing | Johnny Lidfors | 1999-09-14 |