Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7055082 | Information recording and reproducing apparatus | Kazumi Iwata | 2006-05-30 |
| 6014094 | DSV control system | Takumi Hayashiyama, Kazunari Matsui | 2000-01-11 |
| 5638064 | Digital modulating/demodulating method and apparatus using same | Kazunari Matsui, Takumi Hayashiyama | 1997-06-10 |
| 5282185 | Apparatus for generating a data signal at an optimal phase | Shigeru Nemoto | 1994-01-25 |
| 5239526 | Data recording/reproducing apparatus of spiral trade system with kick back control | Toru Yamagishi, Koji Tanaka | 1993-08-24 |
| 5220543 | Compact optical disc recording/reproducing system | Junji Kuroda, Yasuo Haneji, Toru Yamagishi, Koji Tanaka, Noriyoshi Kokubo +2 more | 1993-06-15 |
| 4837641 | Rotary head type digital signal recording and reproducing apparatus | Yasuhiro Yamada | 1989-06-06 |
| 4551840 | Digital data duplication apparatus | Yasuhiko Fujii, Isao Owaki, Susumu Saito, Shinji Nakamura | 1985-11-05 |
| 4546393 | Digital data transmission system with modified NRZI | Susumu Saito, Yasuhiko Fujii | 1985-10-08 |
| 4521817 | Circuit arrangement for magnetic recording apparatus having a multi-track head | Kohhei Sasamura | 1985-06-04 |
| 4499507 | Data reproducing apparatus for reproducing digital data recorded on multi-tracks | Yasuhiro Yamada | 1985-02-12 |