Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8565456 | Hearing aid | Makoto Nishizaki | 2013-10-22 |
| 8542856 | Hearing aid | Makoto Nishizaki | 2013-09-24 |
| 8525654 | Vehicle-in-blind-spot detecting apparatus and method thereof | Shinichi Yoshizawa | 2013-09-03 |
| 8352274 | Sound determination device, sound detection device, and sound determination method for determining frequency signals of a to-be-extracted sound included in a mixed sound | Shinichi Yoshizawa | 2013-01-08 |
| 8223978 | Target sound analysis apparatus, target sound analysis method and target sound analysis program | Shinichi Yoshizawa, Tetsu Suzuki | 2012-07-17 |
| 8204747 | Emotion recognition apparatus | Yumiko Kato, Takahiro Kamai, Yoshifumi Hirose | 2012-06-19 |
| 8184827 | Sound source position detector | Shinichi Yoshizawa | 2012-05-22 |
| 8170247 | Hearing aid | Makoto Nishizaki | 2012-05-01 |
| 8155346 | Audio source direction detecting device | Shinichi Yoshizawa | 2012-04-10 |
| 7974420 | Mixed audio separation apparatus | Shinichi Yoshizawa, Tetsu Suzuki | 2011-07-05 |
| 7711560 | Speech recognition device and speech recognition method | Maki Yamada, Makoto Nishizaki, Shinichi Yoshizawa | 2010-05-04 |
| 7536303 | Audio restoration apparatus and audio restoration method | Shinichi Yoshizawa, Tetsu Suzuki | 2009-05-19 |
| 7473838 | Sound identification apparatus | Tetsu Suzuki, Shinichi Yoshizawa | 2009-01-06 |
| 7310601 | Speech recognition apparatus and speech recognition method | Makoto Nishizaki, Maki Yamada, Shinichi Yoshizawa | 2007-12-18 |
| 7243061 | Multistage inverse quantization having a plurality of frequency bands | Takeshi Norimatsu, Shuji Miyasaka, Mineo Tsushima, Tomokazu Ishikawa | 2007-07-10 |
| 6904404 | Multistage inverse quantization having the plurality of frequency bands | Takeshi Norimatsu, Shuji Miyasaka, Mineo Tsushima, Tomokazu Ishikawa | 2005-06-07 |
| 6477490 | Audio signal compression method, audio signal compression apparatus, speech signal compression method, speech signal compression apparatus, speech recognition method, and speech recognition apparatus | Takeshi Norimatsu, Mineo Tsushima, Tomokazu Ishikawa, Mitsuhiko Serikawa, Taro Katayama +2 more | 2002-11-05 |
| 6311153 | Speech recognition method and apparatus using frequency warping of linear prediction coefficients | Takeshi Norimatsu, Mineo Tsushima, Tomokazu Ishikawa, Mitsuhiko Serikawa, Taro Katayama +2 more | 2001-10-30 |
| 5978759 | Apparatus for expanding narrowband speech to wideband speech by codebook correspondence of linear mapping functions | Mineo Tsushima, Takeshi Norimatsu | 1999-11-02 |
| 5611019 | Method and an apparatus for speech detection for determining whether an input signal is speech or nonspeech | Takeshi Norimatsu | 1997-03-11 |
| 5040234 | Apparatus for and method of generating a timing signal | Tooru Yamamoto, Kazuharu Date, Shigeki Imai | 1991-08-13 |
| 4972159 | Amplifier circuit more immune to fluctuation of reference voltage | Kazuharu Date, Tooru Yamamoto, Shigeki Imai | 1990-11-20 |