| 6999581 |
Event detection circuit |
Tony S. El-Kik, Donald R. Laturell, Steven B. Witmer |
2006-02-14 |
| 6920218 |
Combination clock and charge pump for line powered DAA |
Timothy W. Fuehrer, Donald R. Laturell, Steven B. Witmer |
2005-07-19 |
| 6763107 |
Method and apparatus for reducing distortion in a line powered modulator circuit |
Jonathan H. Fischer, Donald R. Laturell, Lane A. Smith, Weilin Zhu |
2004-07-13 |
| 6744888 |
Line interface circuit with event detection signaling |
Tony S. El-Kik, Donald R. Laturell, Steven B. Witmer |
2004-06-01 |
| 6735305 |
Detection of low tip/ring currents in a line powered DAA |
Jonathan H. Fischer, Donald R. Laturell, Lane A. Smith, Michael S. Toth, Michael G. Williams +1 more |
2004-05-11 |
| 6731728 |
Low noise line powered DAA with differential feedback |
Donald R. Laturell, Steven B. Witmer |
2004-05-04 |
| 6728371 |
Method and apparatus for stabilization of a line powered modulator circuit |
Jonathan H. Fischer, Donald R. Laturell, Lane A. Smith, Weilin Zhu |
2004-04-27 |
| 6674857 |
Startup procedure for international line powered DAA |
Jonathan H. Fischer, Donald R. Laturell, Lane A. Smith, Michael S. Toth, Weilin Zhu |
2004-01-06 |
| 6621904 |
Pre-charging line modem capacitors to reduce DC setup time |
Jonathan H. Fischer, Donald R. Laturell, Lane A. Smith, Weilin Zhu |
2003-09-16 |
| 6421430 |
Line powered DAA with single ended feedback |
Donald R. Laturell, Steven B. Witmer |
2002-07-16 |
| 6418220 |
Extended feedback circuit employing capacitive coupling and sampled data filters |
Jonathan H. Fischer, Donald R. Laturell, Steven B. Witmer |
2002-07-09 |
| 6396877 |
Method and apparatus for combining serial data with a clock signal |
Donald R. Laturell, Steven B. Witmer |
2002-05-28 |
| 6275581 |
Extended feedback circuit employing capacitive coupling and sampled data filters |
Jonathon Fischer, Donald R. Laturell, Steven B. Witmer |
2001-08-14 |
| 6205219 |
Call related information reception using sigma/delta modulation |
Donald R. Laturell, Steven B. Witmer |
2001-03-20 |
| 6198944 |
Method for telephone line interlock and cellular interconnect |
Donald R. Laturell, Steven B. Witmer |
2001-03-06 |
| 5912513 |
Method and apparatus for reducing power dissipation in DC termination circuit |
Donald R. Laturell, Steven B. Witmer |
1999-06-15 |
| 5877565 |
Communication card with telephone line interlock and cellular interconnect |
Donald R. Laturell, Steven B. Witmer |
1999-03-02 |