Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6198345 | Error reduction in quadrature polyphase filters with low open loop gain operational amplifiers | — | 2001-03-06 |
| 5974306 | Time-share I-Q Mixer system with distribution switch feeding in-phase and quadrature polarity inverters | Knud KNUDSEN | 1999-10-26 |
| 5769384 | Low differential light level photoreceptors | Richard A. Baumgartner, Travis N. Blalock, Joey Doernberg | 1998-06-23 |
| 5729008 | Method and device for tracking relative movement by correlating signals from an array of photoelements | Travis N. Blalock, Richard A. Baumgartner, Mark T. Smith | 1998-03-17 |
| 5703353 | Offset removal and spatial frequency band filtering circuitry for photoreceiver signals | Travis N. Blalock, Richard A. Baumgartner, David C. Beard | 1997-12-30 |
| 5678222 | Modulation and frequency conversion by time sharing | Andrew Grzegorek, William J. McFarland, Richard C. Walker, Scott D. Willingham | 1997-10-14 |
| 5438621 | DC-free line code and bit and frame synchronization for arbitrary data transmission | Patrick Petruno, Richard C. Walker, Benny Wing Hung Lai, Chu-Sun Yen, Cheryl Stout +1 more | 1995-08-01 |
| 5365187 | Power amplifier utilizing the vector addition of two constant envelope carriers | William J. McFarland | 1994-11-15 |
| 5345189 | Vectorial signal combiner for generating an amplitude modulated carrier by adding two phase modulated constant envelope carriers | William J. McFarland | 1994-09-06 |
| 5291083 | Bucket brigade analog delay line with voltage limiting feedback | Travis N. Blalock | 1994-03-01 |
| 5022051 | DC-free line code for arbitrary data transmission | Douglas Crandall, Steven R. Hessel, Rasmus Nordby, Kent Springer, Craig Corsetto | 1991-06-04 |
| 4825103 | Sample-and-hold circuit | — | 1989-04-25 |
| 4720687 | Frequency locked loop with constant loop gain and frequency difference detector therefor | Vladimir E. Ostoich | 1988-01-19 |
| 4639619 | Electronic sampler switch | Gary Baldwin, Robert Hallgren, Fred H. Ives | 1987-01-27 |
| 4587477 | Binary scaled current array source for digital to analog converters | Gary Baldwin, Ronald W. Potter | 1986-05-06 |
| 4565961 | Circuit for preserving the magnitude of the dc component in a pulsed current source | Gary Baldwin | 1986-01-21 |
| 4405916 | Digital-to analog converter having supplementary currents to enhance low current switching speed | Gary Baldwin | 1983-09-20 |
| 4280196 | Correction of zero drift, gain drift, and distortion errors in analog storage devices | John Corcoran, Samuel H. Maslak | 1981-07-21 |