Issued Patents All Time
Showing 26–50 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5825213 | Method and apparatus for frequency synthesis | Barry W. Herold, Grazyna A. Pajunen | 1998-10-20 |
| 5805095 | Two's complement digital to analog converter | Scott Robert Humphreys, Lawrence Case | 1998-09-08 |
| 5793825 | Method and apparatus for extending an operating frequency range of an instantaneous phase-frequency detector | Scott Robert Humphreys, Barry W. Herold | 1998-08-11 |
| 5789973 | Resistorless operational transconductance amplifier circuit | Scott Robert Humphreys, Barry W. Herold | 1998-08-04 |
| 5770980 | Fast starting oscillator | John Wayne Simmons, Barry W. Herold, Grazyna A. Pajunen | 1998-06-23 |
| 5768315 | Band-pass sigma-delta converter and commutating filter therefor | James G. Mittel, Walter R. Davis | 1998-06-16 |
| 5754598 | Method and apparatus for controlling a phase lock loop | Barry W. Herold, Grazyna A. Pajunen | 1998-05-19 |
| 5651037 | Apparatus for preforming discrete-time analog queuing and computing in a communication system | Barry W. Herold, Grazyna A. Pajunen | 1997-07-22 |
| 5644743 | Hybrid analog-digital phase error detector | Barry W. Herold, Grazyna A. Pajunen, Walter L. Davis | 1997-07-01 |
| 5640681 | Boot-strapped cascode current mirror | Barry W. Herold, Grazyna A. Pajunen | 1997-06-17 |
| 5630222 | Method and apparatus for generating multiple signals at multiple frequencies | Barry W. Herold, Grazyna A. Pajunen | 1997-05-13 |
| 5612614 | Current mirror and self-starting reference current generator | Barry W. Herold, Grazyna A. Pajunen | 1997-03-18 |
| 5610558 | Controlled tracking of oscillators in a circuit with multiple frequency sensitive elements | James G. Mittel, Philip L. Johnson | 1997-03-11 |
| 5576664 | Discrete time digital phase locked loop | Barry W. Herold, Scott Robert Humphreys, Phillip Johnson, Grazyna A. Pajunen | 1996-11-19 |
| 5564089 | Current controlled variable frequency oscillator having an improved operational transconductance amplifier | — | 1996-10-08 |
| 5563623 | Method and apparatus for driving an active addressed display | — | 1996-10-08 |
| 5552750 | Method and apparatus for determining an instantaneous phase difference between two signals | Barry W. Herold, Grazyna A. Pajunen | 1996-09-03 |
| 5483687 | Operational transconductance amplifier track and hold system | Barry W. Herold, Jeannie Han Kosiec | 1996-01-09 |
| 5422911 | Frequency walled phase lock loop | Barry W. Herold | 1995-06-06 |
| 5412336 | Self-biasing boot-strapped cascode amplifier | Barry W. Herold, Grazyna A. Pajunen | 1995-05-02 |
| 5373249 | Complementary cascode push-pull amplifier | Barry W. Herold, Grazyna A. Pajunen | 1994-12-13 |
| 5363061 | Operational transconductance amplifier with matched outputs | Barry W. Herold, Grazyna A. Pajunen | 1994-11-08 |
| 5361040 | Self limiting and self biasing operational transconductance amplifier | — | 1994-11-01 |
| 5337007 | High efficiency class AB transconductance amplifier | Barry W. Herold | 1994-08-09 |
| 4628324 | Coil assembly for substantially isotropic flux linkage in a given plane | Thomas Gross, Henry F. Pfister | 1986-12-09 |