Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9601123 | Undetectable combining of nonaligned concurrent signals | Trudy D. Stetzler | 2017-03-21 |
| 9025773 | Undetectable combining of nonaligned concurrent signals | Trudy D. Stetzler | 2015-05-05 |
| 8666346 | Robust FM modulation detector using signal autocorrelation | Sira P. Rao | 2014-03-04 |
| 7466959 | Apparatus and method for IF switching in a dual-tuner, dual-IF, HD radio and FM/AM radio receiver | Robert DeMoor | 2008-12-16 |
| 7202731 | Variable distortion limiter using clip detect predictor | Andrew C. Krochmal, David Stewart | 2007-04-10 |
| 7149265 | Timing recovery loop with non-integer length | Yung Da Wang, J. William Whikehart | 2006-12-12 |
| 7099644 | Beamsteering control system for a vehicle radio receiver | J. William Whikehart, Darby E. Hadley | 2006-08-29 |
| 7072431 | Clock timing recovery using arbitrary sampling frequency | Vincent Wang, J. William Whikehart | 2006-07-04 |
| 6968204 | Narrow band and spread spectrum communication system for a vehicle | J. William Whikehart, Nicholas Lawrence Difiore | 2005-11-22 |
| 6952587 | Antenna beam steering responsive to receiver and broadcast transmitter | J. William Whikehart, Jack King, Michael Chrysochoos, Philip M. Bator, Richard D. Zerod | 2005-10-04 |
| 6914987 | Audio amplifier with voltage limiting in response to spectral content | Henry F. Blind | 2005-07-05 |
| 6870934 | Audio loudspeaker detection using back-EMF sensing | Andrew C. Krochmal, Robert Kelly Cadena, Gregory R. Hamel | 2005-03-22 |
| 6760452 | Multi-channel audio signal limiter with shared clip detection | Kai Kwang Lau, Robert Kelly Cadena | 2004-07-06 |
| 6608906 | Cooling fan control strategy for automotive audio system | Andrew C. Krochmal, Gregory R. Hamel | 2003-08-19 |
| 6577737 | Method of detecting a DC offset in an automotive audio system | Andrew C. Krochmal, Gregory R. Hamel | 2003-06-10 |
| 6470186 | Antenna beam steering responsive to receiver and broadcast tower coordinates | J. William Whikehart, Darby E. Hadley | 2002-10-22 |
| 6459796 | AM stereo receiver with reduced distortion | Frank Hirschenberger, J. William Whikehart | 2002-10-01 |
| 6366853 | Utilizing navigation direction data in a mobile antenna signal combiner | J. William Whikehart, Darby E. Hadley | 2002-04-02 |
| 6256358 | Digital signal processing architecture for multi-band radio receiver | J. William Whikehart, James Alfred Wargnier, Bradley Anderson Ballard, Nicholas Lawrence Difiore, Christopher John Hagan | 2001-07-03 |
| 6178211 | Digital processing radio receiver with adaptive bandwidth control | J. William Whikehart, Christopher John Hagan, John W. Wagner, Nicholas Lawrence Difiore, James Alfred Wargnier | 2001-01-23 |
| 6178314 | Radio receiver with adaptive bandwidth controls at intermediate frequency and audio frequency sections | J. William Whikehart, Nicholas Lawrence Difiore | 2001-01-23 |
| 6173166 | Detection and correction of multipath in an FM receiver | — | 2001-01-09 |
| 6154547 | Adaptive noise reduction filter with continuously variable sliding bandwidth | — | 2000-11-28 |
| 6058148 | Digital processing radio receiver with adaptive bandwidth control | J. William Whikehart, Christopher John Hagan, John W. Wagner, Nicholas Lawrence Difiore, James Alfred Wargnier | 2000-05-02 |
| 6055318 | Adaptive noise reduction filter with low modulation disabling | — | 2000-04-25 |