Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6882297 | Analog-to-digital conversion circuit and image processing circuit for stepwise conversion of a signal through multiple stages of conversion units | Atsushi Wada | 2005-04-19 |
| 6859158 | Analog-digital conversion circuit | Atsushi Wada | 2005-02-22 |
| 6727747 | Method for reusing resource for designing operational amplifier, layout generating apparatus, and layout generating program | Atsushi Wada | 2004-04-27 |
| 6696680 | Variable resistance circuit, operational amplification circuit and semiconductor integrated circuit | Atsushi Wada, Takeshi Otsuka | 2004-02-24 |
| 6683554 | Analog-to-digital conversion circuit having increased conversion speed and high conversion accuracy | Norihiro Nikai, Atsushi Wada, Yasuyuki Kimura, Kenichi Kato | 2004-01-27 |
| 6538246 | Variable resistance circuit, operational amplification circuit, semiconductor integrated circuit, time constant switching circuit and waveform shaping circuit | Atsushi Wada, Takeshi Otsuka | 2003-03-25 |
| 6496057 | Constant current generation circuit, constant voltage generation circuit, constant voltage/constant current generation circuit, and amplification circuit | Atsushi Wada | 2002-12-17 |
| 6437723 | Signal processing circuit and semiconductor integrated circuit converting AC signal using two voltage reference values | Takeshi Otsuka, Atsushi Wada | 2002-08-20 |
| 6403943 | Variable resistance circuit, operational amplification circuit, semiconductor integrated circuit, time constant switching circuit and waveform shaping circuit | Atsushi Wada, Takeshi Otsuka | 2002-06-11 |
| 6304206 | Voltage comparator, operational amplifier and analog-to-digital conversion circuit employing the same | Atsushi Wada | 2001-10-16 |