Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5122869 | Video signal processing apparatus | Norihide Kinugasa, Yoshimitsu Saka, Koichi Yoshimura, Toshiaki Ioi, Narutoshi Kanazawa | 1992-06-16 |
| 4994923 | Video signal recording and reproducing apparatus with signal processing circuit for improvement of picture quality | Shigeyuki Itoh, Yoshizumi Watatani | 1991-02-19 |
| 4992891 | Dual record/read head video recording and playback apparatus with fade-in function | Keiichi Komatsu, Shinji Ozaki, Shigeyuki Itoh, Yoshizumi Watatani | 1991-02-12 |
| 4991026 | Chrominance signal reproducing apparatus for video tape recorder | Osamu Takase, Shigeyuki Itoh, Yoshizumi Watatani | 1991-02-05 |
| 4901297 | Optical magnetic recording and reproducing method and apparatus capable of prolonging a recording time | Keiichi Komatsu, Shinji Ozaki, Ken-ichi Kubo | 1990-02-13 |
| 4809096 | Tracking controlling device using multiple pilot signals in magnetic video signal recording and reproducing apparatus | Nobuo Azuma, Yoshizumi Watatani | 1989-02-28 |