Issued Patents All Time
Showing 26–50 of 80 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6611553 | Isolation system with digital communication across a capacitive barrier | Jeffrey W. Scott, David R. Welland | 2003-08-26 |
| 6587560 | Low voltage circuits powered by the phone line | Jeffrey W. Scott, David R. Welland | 2003-07-01 |
| 6570513 | Isolation system with digital communication across a capacitive barrier | Jeffrey W. Scott, David R. Welland | 2003-05-27 |
| 6522745 | Digital access arrangement circuitry and method having a synthesized ringer impedance for connecting to phone lines | George Tyson Tuttle, Jeffrey W. Scott, David R. Welland | 2003-02-18 |
| 6516024 | Digital access arrangement circuitry and method for connecting to phone lines having a DC holding circuit with low distortion and current limiting | Timothy J. Dupuis, George Tyson Tuttle, Jeffrey W. Scott, David R. Welland | 2003-02-04 |
| 6504864 | Digital access arrangement circuitry and method for connecting to phone lines having a second order DC holding circuit | Timothy J. Dupuis, George Tyson Tuttle, Jeffrey W. Scott, David R. Welland | 2003-01-07 |
| 6498825 | Digital access arrangement circuitry and method for connecting to phone lines having a DC holding circuit with programmable current limiting | Timothy J. Dupuis, George Tyson Tuttle, Jeffrey W. Scott, David R. Welland | 2002-12-24 |
| 6480602 | Ring-detect interface circuitry and method for a communication system | Timothy J. Dupuis, Bradley J. Fluke, Jeffrey W. Scott, David R. Welland | 2002-11-12 |
| 6456712 | Separation of ring detection functions across isolation barrier for minimum power | Jerrell P. Hein, Jeffrey W. Scott, David R. Welland | 2002-09-24 |
| 6442271 | Digital isolation system with low power mode | George Tyson Tuttle, Jerrell P. Hein, Timothy J. Dupuis, Jeffrey W. Scott, David R. Welland | 2002-08-27 |
| 6442213 | Digital isolation system with hybrid circuit in ADC calibration loop | Andrew W. Krone, Timothy J. Dupuis, Jeffrey W. Scott, David R. Welland | 2002-08-27 |
| 6430229 | Capacitive isolation system with digital communication and power transfer | Jeffrey W. Scott, David R. Welland | 2002-08-06 |
| 6408034 | Framed delta sigma data with unlikely delta sigma data patterns | Andrew W. Krone, Jerrell P. Hein, Jeffrey W. Scott, David R. Welland | 2002-06-18 |
| 6389134 | Call progress monitor circuitry and method for a communication system | Timothy J. Dupuis, George Tyson Tuttle, Jeffrey W. Scott, David R. Welland | 2002-05-14 |
| 6389061 | Isolation system with digital communication across a capacitive barrier | Jeffrey W. Scott, David R. Welland | 2002-05-14 |
| 6385235 | Direct digital access arrangement circuitry and method for connecting to phone lines | Jeffrey W. Scott, David R. Welland | 2002-05-07 |
| 6359983 | Digital isolation system with data scrambling | Andrew W. Krone, Jeffrey W. Scott, David R. Welland | 2002-03-19 |
| 6330330 | External resistor and method to minimize power dissipation in DC holding circuitry for a communication system | Jeffrey W. Scott, David R. Welland | 2001-12-11 |
| 6323796 | Digital isolation system with ADC offset calibration | Andrew W. Krone, Timothy J. Dupuis, Jeffery W. Scott, David R. Welland | 2001-11-27 |
| 6307891 | Method and apparatus for freezing a communication link during a disruptive event | Jerrell P. Hein, Timothy J. Dupuis, George Tyson Tuttle, Jeffrey W. Scott, David R. Welland | 2001-10-23 |
| 6297755 | Analog isolation system with digital communication across a capacitive barrier | Jeffrey W. Scott, David R. Welland | 2001-10-02 |
| 6298133 | Telephone line interface architecture using ringer inputs for caller ID data | Jerrell P. Hein, Jeffrey W. Scott, David R. Welland | 2001-10-02 |
| 6289070 | Digital isolation system with ADC offset calibration including coarse offset | Andrew W. Krone, Timothy J. Dupuis, Jeffrey W. Scott, David R. Welland | 2001-09-11 |
| 6225927 | Analog isolation system with digital communication across a capacitive barrier | Jeffrey W. Scott, David R. Welland | 2001-05-01 |
| 6222922 | Loop current monitor circuitry and method for a communication system | Jeffrey W. Scott, Andrew W. Krone, David R. Welland | 2001-04-24 |