Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8949303 | Filter | Shuji Kawasaki | 2015-02-03 |
| 8666733 | Audio signal compression and decoding using band division and polynomial approximation | Mitsuteru Nakamura, Yasuo Morooka | 2014-03-04 |
| 8594343 | Sound processing apparatus and sound processing method | Masakazu Higuchi, Yasuo Morooka, Mitsuaki Nakamura | 2013-11-26 |
| 8331720 | Image processing device, method, and program | Jia-Ching Lee, Yasuhiro Ohmiya | 2012-12-11 |
| 7979480 | Discrete signal processing device and processing method | Tomoyuki Takahashi, Tohru Kawabe, Kazuki Katagishi, Kouji Nakamura | 2011-07-12 |
| 7773007 | Signal processing device and method, signal processing program, and recording medium where the program is recorded | Kazuki Katagishi, Kouji Nakamura, Yasuo Morooka | 2010-08-10 |
| 7652610 | Signal processing device and method, signal processing program, and recording medium where the program is recorded | Kazuki Katagishi, Kouji Nakamura, Yasuo Morooka | 2010-01-26 |
| 7463172 | Signal processing device and method, signal processing program, and recording medium where the program is recorded | Kazuki Katagishi, Kouji Nakamura, Yasuo Morooka | 2008-12-09 |
| 7034885 | Image processing circuit | Yukio Koyanagi | 2006-04-25 |
| 6763407 | Digital-to-analog converter with plural voltage holding sections, plural step function generators, voltage summing section and integrator | Yukio Koyanagi | 2004-07-13 |
| 6748409 | Data interpolating system | Kouichi Wada | 2004-06-08 |
| 6735608 | Data interpolation method | Yukio Koyanagi | 2004-05-11 |
| 6639535 | Digital to analog converter using B spline function | Kouichi Wada | 2003-10-28 |
| 6411238 | Digital to analog converter with step voltage generator for smoothing analog output | Yukio Koyanagi | 2002-06-25 |
| 6392398 | Sampling function generator | Kouichi Wada | 2002-05-21 |
| 5572605 | Apparatus and method for inputting, compressing and outputting characters, illustrations, drawings and logomarks | — | 1996-11-05 |
| 5294984 | Video signal processing system for producing intermediate pixel data from neighboring pixel data to improve image quality | Ryoichi Mori, Masaru Kamada | 1994-03-15 |
| 5124939 | Signal modification circuit | Ryoichi Mori, Masaru Kamada | 1992-06-23 |
| 4992792 | Digital-analog converter for converting digital audio signals | Ryoichi Mori, Takashi Tokuyama, Youichi Hashimoto, Koichi Endo | 1991-02-12 |
| 4897654 | Digital-analog converting method, and apparatus therefor | Ryoichi Mori | 1990-01-30 |
| 4538227 | Medical image processor | Nobuyuki Otsu, Motomu Suzuki | 1985-08-27 |