Issued Patents All Time
Showing 26–50 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8841894 | Pulse-width modulated (PWM) audio power amplifier with output transition slope control | Shahrzad Naraghi, John L. Melanson | 2014-09-23 |
| 8447050 | Thermal feedback for switch mode amplification | John L. Melanson, Xiaofan Fei, Steven Green, Jason P. Rhode, Eric Walburger +1 more | 2013-05-21 |
| 8093951 | Pulse-width modulated (PWM) audio power amplifier having output signal magnitude controlled pulse voltage and switching frequency | Lingli Zhang, Dan Shen, Eric J. Swanson | 2012-01-10 |
| 7840015 | Thermal feedback for switch mode amplification | John L. Melanson, Xiaofan Fei, Steven Green, Jason P. Rhode, Eric Walburger +1 more | 2010-11-23 |
| 7826578 | Circuits and methods for noise management in systems including an asynchronously-operable data port | John L. Melanson, Lingli Zhang, Chang Yong Kang | 2010-11-02 |
| 7706438 | Circuits and methods for reducing noise and distortion in pulse width modulation systems | John L. Melanson, Lingli Zhang, Melvin L. Hagge | 2010-04-27 |
| 7570118 | Thermal overload protection circuit and method for protecting switching power amplifier circuits | Lingli Zhang, Randy Boudreaux | 2009-08-04 |
| 7554399 | Protection circuit and method for protecting switching power amplifier circuits during reset | Lingli Zhang | 2009-06-30 |
| 7554409 | Over-current protection circuit and method for protecting switching power amplifier circuits | Lingli Zhang | 2009-06-30 |
| 7477079 | Single ended switched capacitor circuit | Joseph Welser | 2009-01-13 |
| 7432842 | Multi-channel pulse width modulated signal interleave and inversion | John L. Melanson, Brian D. Trotter | 2008-10-07 |
| 7327296 | Signal processing system with modified delta sigma modulator quantizer output signals to spread harmonic frequencies of pulse width modulator output signals | John L. Melanson, Brian D. Trotter | 2008-02-05 |
| 7308027 | Circuits and methods for reducing distortion and noise in pulse width modulation systems utilizing full-bridge drivers | Melvin L. Hagge, Lingli Zhang, John L. Melanson | 2007-12-11 |
| 7230454 | Serial audio output driver circuits and methods | Joseph Welser | 2007-06-12 |
| 7224218 | Pre-charge apparatus and method for controlling startup transients in a capacitively-coupled switching power stage | Jiandong Jiang, Lingli Zhang, John L. Melanson | 2007-05-29 |
| 7209064 | Signal processing system with spreading of a spectrum of harmonic frequencies of a pulse width modulator output signal | John L. Melanson | 2007-04-24 |
| 7196648 | Non-integer decimation using cascaded intergrator-comb filter | Lei Ding, John L. Melanson, Xaiofan Fei | 2007-03-27 |
| 7055045 | Automatic mode detection circuits for configuring a terminal as an output terminal in a first mode as an input terminal in a second mode | Xiaofan Fei | 2006-05-30 |
| 6972705 | Signal processing system having an ADC delta-sigma modulator with single-ended input and feedback signal inputs | Xiaofan Fei, John L. Melanson | 2005-12-06 |
| 6933871 | Feedback steering delta-sigma modulators and systems using the same | John L. Melanson, Xiaofan Fei | 2005-08-23 |
| 6853242 | Power supply based audio compression for digital audio amplifier | John L. Melanson, Xiaofan Fei, Steven Green, Jason P. Rhode | 2005-02-08 |
| 6765436 | Power supply based audio compression for digital audio amplifier | John L. Melanson, Xiaofan Fei, Steven Green, Jason P. Rhode | 2004-07-20 |
| 6556159 | Variable order modulator | Xiaofan Fei, John L. Melanson | 2003-04-29 |
| 6538590 | Transient noise reduction circuits, systems and methods in power digital-to-analog converters | Eric Walburger, John L. Melanson, Xiaofan Fei | 2003-03-25 |
| 6529074 | Circuits and methods for output impedance matching in switched mode circuits | John L. Melanson, Eric Walburger | 2003-03-04 |