Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6826496 | Circuitry for and a method of detecting tonal signals with the processing capacity distributed with weight to frequency and time domains | Nobuyuki Yamaguchi, Atsushi Yokoyama, Kazuyoshi Akie | 2004-11-30 |
| 6687368 | Tone signal detecting method and tone signal detector | Atsushi Shimbo | 2004-02-03 |
| 6678660 | Receiving buffer controlling method and voice packet decoder | Atsushi Shimbo | 2004-01-13 |