Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6999920 | Exponential echo and noise reduction in silence intervals | Michael D. Walker, Michael Maurer | 2006-02-14 |
| 6581153 | Integrated circuit | Dieter Kopp, Michael Trompf, Stefan Späth | 2003-06-17 |
| 6498850 | Multichannel echo canceller with a compander | Michael D. Walker, Armin Mann, Fritz Weinschenk, Holger Söhnle | 2002-12-24 |
| 6493448 | Process for echo suppression with adaptive fir filters | Armin Mann, Michael D. Walker | 2002-12-10 |
| 6483915 | Equipment and processes for echo suppression with adaptive fir filters | Armin Mann, Michael D. Walker | 2002-11-19 |
| 6320918 | Procedure for reducing interference in the transmission of an electrical communication signal | Michael D. Walker, Michael Trompf | 2001-11-20 |
| 6272181 | Method and device for the aggregation of signals from sampling values | — | 2001-08-07 |
| 6269156 | Method, server and communications node for setting up fee-optimized communications connections | Peter Sauer, Rolf Kotthaus | 2001-07-31 |
| 6041290 | Method of adaptively adjusting the coefficients of a digital filter in an echo canceller | Michael D. Walker, Uwe Ackermann | 2000-03-21 |
| 5949367 | Device and method for classifying objects in an environmentally adaptive manner | Michael Trompf, Dieter Baums, Gebhard Thierer | 1999-09-07 |
| 5909489 | Method of and circuit arrangement for improving the transmission properties of an echo affected transmission link in a telecommunications network | Michael D. Walker | 1999-06-01 |
| 5570423 | Method of providing adaptive echo cancellation | Michael Walker | 1996-10-29 |
| 5134618 | Method of testing connecting and/or switching devices and/or lines | Mark Karpovsky, Lev Levitin | 1992-07-28 |