Issued Patents All Time
Showing 1–25 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8126490 | Radio receiver | Yuji Matsuda | 2012-02-28 |
| 8112780 | Digital broadcast receiving apparatus | Masayuki Ishida, Nobuyoshi Okumura, Tadatoshi Ohkubo | 2012-02-07 |
| 7551743 | Noise reduction apparatus and audio output apparatus | Masahiro Tsujishita, Masayuki Tsuji, Masayuki Ishida, Eizi Asano | 2009-06-23 |
| 7057456 | Class D amplifier | Masayuki Tsuji, Masayuki Ishida, Tsuyoshi Nakada | 2006-06-06 |
| 6993309 | Noise removal apparatus and an FM receiver | Masahiro Tsujishita, Masayuki Tsuji, Masayuki Ishida | 2006-01-31 |
| 6989714 | Class D amplifier | Masayuki Tsuji, Masayuki Ishida, Tsuyoshi Nakada | 2006-01-24 |
| 6924700 | Class D amplifier | Masayuki Tsuji, Masayuki Ishida, Tsuyoshi Nakada | 2005-08-02 |
| 6901146 | All-digital FM stereo demodulator and demodulation method | Masayuki Tsuji, Masahiro Tsujishita, Masayuki Ishida | 2005-05-31 |
| 6826392 | Multipath noise reduction method, multipath noise reducer, and FM receiver | Masayuki Tsuji, Masahiro Tsujishita, Masayuki Ishida | 2004-11-30 |
| 6795559 | Impulse noise reducer detecting impulse noise from an audio signal | Masahiro Tsujishita, Masayuki Tsuji, Masayuki Ishida | 2004-09-21 |
| 6788923 | Receiver noise reduction with expanding gated pulses | Masahiro Tsujishita, Masayuki Tsuji, Masayuki Ishida | 2004-09-07 |
| 6725027 | Multipath noise reducer, audio output circuit, and FM receiver | Masayuki Tsuji, Eiji Asano, Masahiro Tsujishita, Masayuki Ishida | 2004-04-20 |
| 6690805 | Audio signal noise reduction system | Masayuki Tsuji, Masahiro Tsujishita, Masayuki Ishida | 2004-02-10 |
| 6665526 | Multipath noise reducer, audio output circuit, and FM receiver | Masayuki Tsuji, Eizi Asano, Masahiro Tsujishita, Masayuki Ishida | 2003-12-16 |
| 6664849 | Digital FM demodulator performing amplitude compensation | Masayuki Tsuji, Masahiro Tsujishita, Masayuki Ishida | 2003-12-16 |
| 6516039 | Digital audio broadcast receiver acquiring frame synchronization quickly in the presence of noise | Tadatoshi Ohkubo, Masayuki Ishida, Masakazu Morita | 2003-02-04 |
| 6438183 | Digital audio broadcast receiver and tuning method thereof | Tadatoshi Ohkubo, Masayuki Ishida | 2002-08-20 |
| 6434205 | Digital broadcast receiver using weighted sum of channel impulse response data to adjust sampling window | Tadatoshi Ohkubo, Masayuki Ishida | 2002-08-13 |
| 6385261 | Impulse noise detector and noise reduction system | Masayuki Tsuji, Masahiro Tsujishita, Masayuki Ishida | 2002-05-07 |
| 6341123 | Digital audio broadcasting receiver | Masahiro Tsujishita, Masayuki Ishida, Tadatoshi Ohkubo, Masakazu Morita | 2002-01-22 |
| 6151374 | Synchronizing signal detecting apparatus | Masahiro Tsujishita, Yoshiharu Ohsuga, Tadatoshi Ohkubo | 2000-11-21 |
| 6151369 | Digital broadcast receiver | Tadatoshi Ohkubo, Masahiro Tsujishita, Masayuki Ishida, Masakazu Morita | 2000-11-21 |
| 6148045 | Digital broadcast receiver | Masahiro Tsujishita, Tadatoshi Ohkubo, Masayuki Ishida, Yoshiharu Ohsuga | 2000-11-14 |
| 6067332 | Frequency searching method and digital audio broadcast receiver | Masahiro Tsujishita, Tadatoshi Ohkubo, Masayuki Ishida, Masakazu Morita | 2000-05-23 |
| 6038275 | Digital broadcasting receiver | Tadatoshi Ohkubo, Masahiro Tsujishita, Yoshiharu Ohsuga | 2000-03-14 |