Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8223055 | Reduced-switching dynamic element matching apparatus and methods | — | 2012-07-17 |
| 7420493 | Extended range delta-sigma modulator and delta-sigma power converter | — | 2008-09-02 |
| 7406178 | Efficient digital audio automatic gain control | Zhongnong Jiang | 2008-07-29 |
| 7362250 | Dynamic dither for sigma-delta converters | Zhang Weibiao | 2008-04-22 |
| 7345518 | Digital storage element with dual behavior | Charles M. Branch, Steven Craig Bartling, Dharin N. Shah | 2008-03-18 |
| 7274716 | Multiplexed sigma-delta interface | — | 2007-09-25 |
| 6995598 | Level shifter circuit including a set/reset circuit | — | 2006-02-07 |
| 6940438 | Method and circuit for reducing quantizer input/output swing in a sigma-delta modulator | Wem Ming Koe, Franco Maloberti | 2005-09-06 |
| 6894548 | Circuit for modifying a clock signal to achieve a predetermined duty cycle | Donald C. Richardson | 2005-05-17 |
| 6867722 | H-bridge common-mode noise reduction circuit | — | 2005-03-15 |
| 6834292 | Multi-rate digital filter for audio sample-rate conversion | Zhongnong Jiang, Rustin W. Allred | 2004-12-21 |
| 6795005 | Variable, adaptive quantization in sigma-delta modulators | — | 2004-09-21 |
| 6678709 | Digital filter with efficient quantization circuitry | Prashant Gandhi | 2004-01-13 |
| 6671663 | Time domain noise analysis | James R. Hellums | 2003-12-30 |
| 6650191 | Low jitter ring oscillator architecture | Charles M. Branch, Lieyi Fang, Daramana Gata | 2003-11-18 |
| 6624779 | Switched capacitor integrator that shares a capacitor for input signal and reference signal | — | 2003-09-23 |
| 6614375 | Sigma-delta analog-to-digital converter having improved reference multiplexer | — | 2003-09-02 |
| 6611221 | Multi-bit sigma-delta modulator employing dynamic element matching using adaptively randomized data-weighted averaging | Karthikeyan Soundarapandian | 2003-08-26 |
| 6546407 | Reduced computation digital filter | Zhongnong Jiang, Rustin W. Allred | 2003-04-08 |
| 6487573 | Multi-rate digital filter for audio sample-rate conversion | Zhongnong Jiang, Rustin W. Allred | 2002-11-26 |
| 6112218 | Digital filter with efficient quantization circuitry | Prashant Gandhi | 2000-08-29 |
| 5369407 | Linear/companding A/D converter | Henry Tin-Hang Yung, William A. Severin | 1994-11-29 |
| 5274376 | Multi-mode digital to analog converter and method | Sabrina D. Phillips, William A. Severin | 1993-12-28 |
| 5161185 | Method and apparatus for reducing noise in a digital voltage signal | — | 1992-11-03 |
| 4862121 | Switched capacitor filter | William A. Severin | 1989-08-29 |