Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6438158 | Method and apparatus for implementing enhanced multiple modulus conversion techniques in a signal point mapping context | Xuming Zhang, Yuanjie Chen | 2002-08-20 |
| 6381266 | Method and apparatus for identifying the encoding type of a central office codec | Xuming Zhang | 2002-04-30 |