Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7031912 | Speech coding apparatus capable of implementing acceptable in-channel transmission of non-speech signals | Hisashi Yajima, Shigeaki Suzuki | 2006-04-18 |
| 6172978 | Tandem relay device | Wataru Fushimi, Yoshihiko Shirokura, Yukimasa Sugino, Yushi Naito | 2001-01-09 |
| 6147973 | Signal discrimination apparatus, a method for discriminating a signal, and a signal transmitting apparatus for voiceband signals | Yukimasa Sugino, Yushi Naito, Nobuyoshi Horie | 2000-11-14 |
| 5280561 | Method for processing audio signals in a sub-band coding system | Mihoko Satoh, Yushi Naito | 1994-01-18 |