Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6799062 | Full-duplex hands-free transparency circuit and method therefor | Christopher W. Springfield, William Chunhung Yip | 2004-09-28 |
| 6707912 | Method and apparatus for setting a step size for an adaptive filter coefficient of an echo canceller | James A. Stephens, Ernest Chen, William Chunhung Yip | 2004-03-16 |