Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9101518 | Impaired person care system and method | — | 2015-08-11 |
| RE42237 | Active mode line voltage regulator for ringing subscriber line interface circuit | Douglas Youngblood | 2011-03-22 |
| RE42123 | Programmable subscriber line circuit partitioned into high voltage interface and digital control subsections | Douglas Youngblood, Edward Berrios | 2011-02-08 |
| 7260103 | Mode-dependent, multiple bias-driven battery switch for subscriber line interface circuit | Douglas Youngblood | 2007-08-21 |
| 7260214 | Programmable subscriber line circuit partitioned into high voltage interface and digital control subsections | Douglas Youngblood, Edward Berrios | 2007-08-21 |
| 7206405 | Enhanced high voltage interface for partitioned subscriber line interface circuit | Douglas Youngblood | 2007-04-17 |
| 7130414 | Active mode line voltage regulator for ringing subscriber line interface circuit | Douglas Youngblood | 2006-10-31 |
| 7050577 | Programmable subscriber line circuit partitioned into high voltage interface and digital control subsections | Douglas Youngblood, Edward Berrios | 2006-05-23 |
| 7003103 | Mode-dependent, multiple bias-driven battery switch for subscriber line interface circuit | Douglas Youngblood | 2006-02-21 |
| 6950514 | Voltage reference filter for subscriber line interface circuit | Douglas Youngblood | 2005-09-27 |
| 6914475 | Bandgap reference circuit for low supply voltage applications | Douglas Youngblood | 2005-07-05 |
| 6873703 | Precision, low-power current-sense transmission channel for subscriber line interface circuit, programmable with single ended impedances and capable of exhibiting a voltage sense response | — | 2005-03-29 |
| 6862352 | Controlled switching mechanism for accomplishing soft polarity reversal, ring-trip filtering, and line voltage measurements in a subscriber line interface circuit using common capacitor | — | 2005-03-01 |
| 6829353 | Mechanism for preventing clipping of pulse metering signals in telephone line card channels | — | 2004-12-07 |
| 6829354 | Biasing arrangement for optimizing DC feed characteristics for subscriber line interface circuit | — | 2004-12-07 |
| 6765290 | Arrangement for back-biasing multiple integrated circuit substrates at maximum supply voltage among all circuits | Douglas Youngblood | 2004-07-20 |
| 6570431 | Temperature-insensitive output current limiter network for analog integrated circuit | — | 2003-05-27 |
| 6545540 | Current mirror-embedded low-pass filter for subscriber line interface circuit applications | — | 2003-04-08 |
| 6518832 | Mechanism for minimizing current mirror transistor base current error for low overhead voltage applications | — | 2003-02-11 |
| 6507236 | Multistage precision, low input/output overhead, low power, high output impedance and low crosstalk current mirror | — | 2003-01-14 |
| 6504927 | Mechanism for measuring resistance of telephone subscriber line and generating measurement as pulse width of periodic waveform | — | 2003-01-07 |
| 6492930 | Reduced propagation delay current mode cascaded analog-to-digital converter and threshold bit cell therefor | — | 2002-12-10 |
| 6469519 | Precision loop voltage detector for subscriber line interface circuit applications | — | 2002-10-22 |
| 6452450 | Transconductance amplifier based precision half wave and full wave rectifier circuit | — | 2002-09-17 |
| 6441447 | Co-patterning thin-film resistors of different compositions with a conductive hard mask and method for same | Joseph A. Czagas, George Bajor, Chris A. McCarty | 2002-08-27 |