Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7888981 | Semiconductor integrated circuit | Takashi Nakamura | 2011-02-15 |
| 7786776 | Semiconductor integrated circuit | Takashi Nakamura | 2010-08-31 |
| 6963298 | Analog to digital converter with voltage comparators that compare a reference voltage with voltages at connection points on a resistor ladder | Masanori Otsuka, Etsuji Yamamoto, Shinya Sano | 2005-11-08 |
| 5515047 | Converter, offset adjustor, and portable communication terminal unit | Yoichiro Kobayashi, Masanori Otsuka, Takao Okazaki, Yukihito Ishihara, Norimitsu Nishikawa +1 more | 1996-05-07 |
| 5406218 | Phase demodulator receiving inputs from phase detector and binary phase detector | Yukihito Ishihara, Takao Okazaki, Katsuhiro Furukawa | 1995-04-11 |
| 5392456 | Method of controlling filter time constant and filter circuit having the time constant control function based on the method | Isamu Mitomo, Nobuo Tsukamoto, Arata Nakagoshi, Jiroh Sakaguchi, Hiroshi Noguchi +1 more | 1995-02-21 |
| 5347279 | Analog/digital converter of the over-sampling type with feedback correction to offset sampling error | Yukihito Ishihara, Yuko Tamba | 1994-09-13 |
| 5227795 | Over-sampling analog-to-digital converter using a current switching circuit as a local digital-to-analog converter | Norimitsu Nishikawa, Katsuhiro Furukawa, Yuko Tamba, Takao Okazaki | 1993-07-13 |
| 5157398 | A/D convertor of the pipeline type having additional comparators for use in setting a specified reference voltage | Takao Okazaki | 1992-10-20 |
| 4945359 | A/D converter | — | 1990-07-31 |
| 4796296 | PCM coder and decoder having function of two-wire/four-wire conversion | Eiichi Amada, Takahiko Kozaki, Shigeo Nishita, Masaru Kokubo | 1989-01-03 |
| 4787080 | PCM coder and decoder circuit having digital balancing network | Takahiko Kozaki, Shigeo Nishita, Kenichi Ohwada | 1988-11-22 |
| 4672361 | Linear interpolative analog-to-digital converter | Masaru Kokubo, Shigeo Nishida | 1987-06-09 |
| 4652858 | Interpolative D/A converter | Masaru Kokubo, Shigeo Nishita | 1987-03-24 |
| RE32313 | Digital-to-analog converter and PCM encoder using the converter | — | 1986-12-23 |
| 4603417 | PCM coder and decoder | Hirotoshi Shirasu | 1986-07-29 |
| 4591827 | PCM coder-decoder | Shigeo Nishita, Kenichi Ohwada | 1986-05-27 |
| 4507792 | PCM Encoder conformable to the A-law | Shiro Hagiwara, Fumiaki Fujii | 1985-03-26 |
| 4369433 | Digital-to-analog converter and PCM encoder using the converter | — | 1983-01-18 |
| 4366439 | PCM Decoder | — | 1982-12-28 |
| 4338656 | Voltage polarity switching circuit | — | 1982-07-06 |
| 4250492 | Non-uniform weighting circuitry | Nobuo Tsukamoto | 1981-02-10 |