Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6577647 | Synchronization system and method, and recording medium | — | 2003-06-10 |
| 6519244 | CDMA transmitter capable of reducing transmission power | — | 2003-02-11 |
| 6430171 | Receiver apparatus for a random access channel of a CDMA mobile communication system | Tadashi Ogami | 2002-08-06 |
| 5819218 | Voice encoder with a function of updating a background noise | Toshihiro Hayata | 1998-10-06 |
| 5809460 | Speech decoder having an interpolation circuit for updating background noise | Toshihiro Hayata | 1998-09-15 |
| 5757906 | Method of canceling echoes and echo canceler | — | 1998-05-26 |
| 5748726 | Echo canceller | — | 1998-05-05 |
| 5295224 | Linear prediction speech coding with high-frequency preemphasis | Makio Makamura | 1994-03-15 |