Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9595252 | Noise reduction audio reproducing device and noise reduction audio reproducing method | Kohei Asada, Shiro Suzuki, Tetsunori Itabashi | 2017-03-14 |
| 9245517 | Noise reduction audio reproducing device and noise reduction audio reproducing method | Kohei Asada, Shiro Suzuki, Tetsunori Itabashi | 2016-01-26 |
| 8792653 | Signal processing apparatus and method | Shiro Suzuki | 2014-07-29 |
| 8761406 | Audio signal processing device and audio signal processing method | Kohei Asada, Shiro Suzuki, Tetsunori Itabashi, Hiroki Kawanishi | 2014-06-24 |
| 8737642 | Audio reproducing apparatus | Masaru Shimura, Taro Nakagami | 2014-05-27 |
| 8204239 | Audio processing method and audio processing apparatus | Masaru Shimura, Taro Nakagami | 2012-06-19 |
| 8150067 | Bass enhancing method, signal processing device, and audio reproducing system | Taro Nakagami, Masaru Shimura | 2012-04-03 |
| 8094046 | Signal processing apparatus and signal processing method | Kohei Asada, Tetsunori Itabashi | 2012-01-10 |
| 8094835 | Signal processing apparatus | Masaru Shimura, Taro Nakagami | 2012-01-10 |
| 8077882 | Audio reproducing apparatus | Masaru Shimura, Taro Nakagami | 2011-12-13 |
| 8000824 | Audio reproducing apparatus | Masaru Shimura, Taro Nakagami | 2011-08-16 |
| 7592941 | Signal processing apparatus and signal processing method | Kohei Asada, Ayataka Nishio | 2009-09-22 |
| 7265617 | Class-D amplifier | — | 2007-09-04 |
| 7221297 | D/A converter and output amplifying circuit | Toshihiko Masuda | 2007-05-22 |
| 7209002 | Audio amplifier | Toshihiko Masuda | 2007-04-24 |
| 7132884 | Power amplification device | Toshihiko Masuda | 2006-11-07 |
| 6952461 | Sampling frequency conversion apparatus | Nobuyuki Yasuda | 2005-10-04 |
| 6917242 | Power amplifier | Toshihiko Masuda | 2005-07-12 |
| 6795004 | Delta-sigma modulation apparatus and signal amplification apparatus | Toshihiko Masuda | 2004-09-21 |
| 6734725 | Power amplifier | Toshihiko Masuda | 2004-05-11 |
| 6586991 | Digital power amplifier | Toshihiko Masuda | 2003-07-01 |