Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE42237 | Active mode line voltage regulator for ringing subscriber line interface circuit | Leonel Ernesto Enriquez | 2011-03-22 |
| RE42123 | Programmable subscriber line circuit partitioned into high voltage interface and digital control subsections | Leonel Ernesto Enriquez, Edward Berrios | 2011-02-08 |
| 7843248 | Analog switch with overcurrent detection | Robert W. Webb, Roger Levison | 2010-11-30 |
| 7482853 | Method and apparatus for switching audio and data signals through a single terminal | Donald Giles Koch, Christopher Ludeman | 2009-01-27 |
| 7446747 | Multiple channel programmable gamma correction voltage generator | Steven R. Smith | 2008-11-04 |
| 7386015 | Digitally configurable multiplexer/de-multiplexer | Christopher Ludeman | 2008-06-10 |
| 7260214 | Programmable subscriber line circuit partitioned into high voltage interface and digital control subsections | Leonel Ernesto Enriquez, Edward Berrios | 2007-08-21 |
| 7259627 | True differential microphone amplifier | Vijayakumar Dhanasekaran | 2007-08-21 |
| 7260103 | Mode-dependent, multiple bias-driven battery switch for subscriber line interface circuit | Leonel Ernesto Enriquez | 2007-08-21 |
| 7206405 | Enhanced high voltage interface for partitioned subscriber line interface circuit | Leonel Ernesto Enriquez | 2007-04-17 |
| 7167557 | Subscriber line interface circuit (SLIC) including a transient output current limit circuit and related method | — | 2007-01-23 |
| 7130414 | Active mode line voltage regulator for ringing subscriber line interface circuit | Leonel Ernesto Enriquez | 2006-10-31 |
| 7103178 | Speech amplifier-resident mechanism for controllably supplying power to a line circuit | — | 2006-09-05 |
| 7075370 | CMOS-configured transconductance amplifier circuit | — | 2006-07-11 |
| 7050577 | Programmable subscriber line circuit partitioned into high voltage interface and digital control subsections | Leonel Ernesto Enriquez, Edward Berrios | 2006-05-23 |
| 7003103 | Mode-dependent, multiple bias-driven battery switch for subscriber line interface circuit | Leonel Ernesto Enriquez | 2006-02-21 |
| 6950514 | Voltage reference filter for subscriber line interface circuit | Leonel Ernesto Enriquez | 2005-09-27 |
| 6914475 | Bandgap reference circuit for low supply voltage applications | Leonel Ernesto Enriquez | 2005-07-05 |
| 6765290 | Arrangement for back-biasing multiple integrated circuit substrates at maximum supply voltage among all circuits | Leonel Ernesto Enriquez | 2004-07-20 |
| 6137189 | Line circuit apparatus for supplying power to a telephone set in telecommunication systems | — | 2000-10-24 |
| 5636274 | Switch controller and method | — | 1997-06-03 |