Issued Patents All Time
Showing 51–75 of 101 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6724333 | Digital-to-analog converter | Akihiko Toda | 2004-04-20 |
| 6707337 | Self-operating PWM amplifier | — | 2004-03-16 |
| 6703958 | Analog-to-digital converter | — | 2004-03-09 |
| 6696891 | Class D amplifier | Yasuhiko Sekimoto | 2004-02-24 |
| 6636608 | Pseudo-stereo circuit | Tatsuya Kishii | 2003-10-21 |
| 6600350 | Power-on/off reset circuit | Yasuhiko Sekimoto | 2003-07-29 |
| 6509856 | Digital-to-analog converter | Kunito Takahashi, Shoji Yasui | 2003-01-21 |
| 6448856 | Electronic volume circuit | Nobuaki Tsuji | 2002-09-10 |
| 6445320 | A/D conversion apparatus | Akira Sogo, Ryo Kamiya | 2002-09-03 |
| 6437719 | Delta-sigma modulator for power amplification of audio signals | Makoto Kaneko | 2002-08-20 |
| 6428671 | Method and apparatus for electro-coagulation printing and electrode control unit | Akira Sogo, Kunimasa Muroi, Koji Toda | 2002-08-06 |
| 6111532 | Waveform shaper and sigma-delta D/A converter | Masamitsu Hirano | 2000-08-29 |
| 6061279 | Delay circuit for analog signals | Akihiro Toda, Toshio Maejima | 2000-05-09 |
| 6018262 | CMOS differential amplifier for a delta sigma modulator applicable for an analog-to-digital converter | Yusuke Yamamoto, Toshio Maejima | 2000-01-25 |
| 5982204 | Information-discriminating circuit | Akihiko Toda | 1999-11-09 |
| 5946608 | Mixer circuit | Kuniaki Morita | 1999-08-31 |
| 5939931 | Driving circuit having differential and H-bridge circuits for low voltage power source | — | 1999-08-17 |
| 5937071 | Sound field expanding apparatus with improved tone control system | Tatsuya Kishii | 1999-08-10 |
| 5818372 | D/A converter circuit having offset voltage application device | — | 1998-10-06 |
| 5757299 | Analog-Digital converter using delta sigma modulation digital filtering, and gain-scaling | Yusuke Yamamoto, Toshio Maejima | 1998-05-26 |
| 5742245 | Digital-to-analog converter circuit using current mirror circuit for conversion of law-order bits | — | 1998-04-21 |
| 5633637 | Digital-to-analog converter circuit | — | 1997-05-27 |
| 5570091 | Analog-to-digital converter | Takayuki Kohdaka | 1996-10-29 |
| 5499175 | Power supply circuit | — | 1996-03-12 |
| 5475580 | Power supply circuit | — | 1995-12-12 |