Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9026433 | Voice quality measurement device, method and computer readable medium | — | 2015-05-05 |
| 8867527 | Speech processing peripheral device and IP telephone system | Shinji Usuba, Hiroshi Hashizume, Hiroshi Kuboki | 2014-10-21 |
| 8619933 | Receiver apparatus for absorbing clock difference between transmitting and receiving sides and a method therefor | — | 2013-12-31 |
| 8577046 | Apparatus for estimating sound source direction from correlation between spatial transfer functions of sound signals on separate channels | — | 2013-11-05 |
| 8484037 | Bandwidth extension apparatus for automatically adjusting the bandwidth of inputted signal and a method therefor | Atsushi Tashiro | 2013-07-09 |
| 8484039 | Apparatus for efficiently mixing narrowband and wideband voice data and a method therefor | Shinji Usuba | 2013-07-09 |
| 8472433 | Voice communications system | Shinji Usuba, Hiroshi Kuboki | 2013-06-25 |
| 8396703 | Voice band expander and expansion method, and voice communication apparatus | — | 2013-03-12 |
| 8204262 | Sound image localization processor, method, and program | — | 2012-06-19 |
| 8090093 | Echo canceller | Masashi Takada | 2012-01-03 |
| 8000976 | Speech band extension device | Atsushi Tashiro | 2011-08-16 |
| 7961855 | Voice communications apparatus | Masashi Takada, Kazuyoshi Akie | 2011-06-14 |
| 7924824 | Voice packet communications system with communications quality evaluation function | Atsushi Yokoyama, Nobuyuki Yamaguchi, Kazuyoshi Akie | 2011-04-12 |
| 7848495 | Voice communication apparatus | Kazuyoshi Akie, Masashi Takada | 2010-12-07 |
| 7792255 | Voice communications apparatus | Masashi Takada, Kazuyoshi Akie | 2010-09-07 |
| 7733849 | Voice communications system | Shinji Usuba, Hiroshi Kuboki | 2010-06-08 |
| 7672296 | Real-time communications system of high communications quality and media terminal apparatus | Yumiko Araki, Shinji Usuba, Hiroshi Kuboki | 2010-03-02 |
| 7573989 | Telephone communications apparatus | Shinji Usuba, Yumiko Araki | 2009-08-11 |
| 7489678 | Voice packet communications system with communications quality evaluation function | Atsushi Yokoyama, Nobuyuki Yamaguchi, Kazuyoshi Akie | 2009-02-10 |
| 7443837 | Telephone communication system | Shinji Usuba, Hiroshi Kuboki | 2008-10-28 |
| 7349330 | Packet receiver with the influence of jitter and packet losses reduced before a buffer becomes idle due to data delays and packet receiving method using the same | Shinji Hayakawa, Satoshi Watanabe, Atsushi Shimbo | 2008-03-25 |
| 7305338 | Apparatus and method for concealing erased periodic signal data | Atsushi Tashiro, Masashi Takada | 2007-12-04 |
| 7123607 | Quality control device for voice packet communications | Atsushi Yokoyama, Nobuyuki Yamaguchi, Kazuyoshi Akie | 2006-10-17 |
| 6885659 | Voice packet communications system with communications quality evaluation function | Atsushi Yokoyama, Nobuyuki Yamaguchi, Kazuyoshi Akie | 2005-04-26 |
| 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 |