Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696873 | Vocoder system and method for performing pitch estimation using an adaptive correlation sample window | — | 1997-12-09 |
| 5694466 | DTMF detector system and method which performs improved twist computation and thresholding | Zheng Xie | 1997-12-02 |
| 5657351 | Method and apparatus for external intermediate data processing | Jacqueline Mullins, Joseph W. Peterson, Alan F. Hendrickson | 1997-08-12 |
| 5644634 | System and method for dual tone multifrequency detection using variable frame widths | Zheng Xie | 1997-07-01 |
| 5596724 | Input/output data port with a parallel and serial interface | Jacqueline Mullins, Joseph W. Peterson, Alan F. Hendrickson | 1997-01-21 |