Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5307171 | Video tape recorder/player | Nobuo Azuma, Atsushi Yoshioka, Shuichi Matsuo, Tadasu Otsubo | 1994-04-26 |
| 5122885 | Magnetic video recording/reproducing apparatus for video signals of different aspect ratios adapter unit | Atsushi Yoshioka, Nobuo Azuma, Tadasu Otsubo, Shuichi Matsuo | 1992-06-16 |
| 4994923 | Video signal recording and reproducing apparatus with signal processing circuit for improvement of picture quality | Shigeyuki Itoh, Hikaru Masui | 1991-02-19 |
| 4992891 | Dual record/read head video recording and playback apparatus with fade-in function | Keiichi Komatsu, Shinji Ozaki, Shigeyuki Itoh, Hikaru Masui | 1991-02-12 |
| 4991026 | Chrominance signal reproducing apparatus for video tape recorder | Osamu Takase, Hikaru Masui, Shigeyuki Itoh | 1991-02-05 |
| 4843488 | Noise elimination circuit for reproduction of audio signals in a magnetic tape recording and reproducing apparatus | Shigeyuki Ito | 1989-06-27 |
| 4825305 | Apparatus for recording and reproducing digital using dynamic range compression | Shigeyuki Itoh, Akitoshi Tsunoka | 1989-04-25 |
| 4809096 | Tracking controlling device using multiple pilot signals in magnetic video signal recording and reproducing apparatus | Nobuo Azuma, Hikaru Masui | 1989-02-28 |
| 4769722 | Apparatus for recording and reproducing a video signal and for recording and reproducing a PCM audio signal on forward and reverse tape travelling directions | Shigeyuki Itoh, Akira Shibata, Koji Kaniwa | 1988-09-06 |
| 4740847 | Magnetic recording/reproducing apparatus | Katsuyuki Watanabe, Shinji Ozaki | 1988-04-26 |
| 4677645 | Audio signal transmission system having noise reduction means | Koji Kaniwa, Shigeyuki Itoh | 1987-06-30 |
| 4604659 | Apparatus for detecting a drop-out in a magnetic recording/reproducing apparatus | Shigeyuki Itoh, Katsuo Mohri | 1986-08-05 |
| 4491880 | Magnetic recording and/or reproducing apparatus | Noboru Kojima, Takao Arai, Takashi Hoshino, Toshifumi Shibuya | 1985-01-01 |
| 4490753 | Audio signal recording and reproducing circuit | Shigeyuki Ito | 1984-12-25 |
| 4481546 | Modulator-demodulator for obtaining and demodulating frequency-modulated signal | Shigeyuki Ito, Hitoaki Owashi | 1984-11-06 |
| 4453186 | Video and sound signal recording and reproducing device | Shigeyuki Ito, Katsuo Mohri | 1984-06-05 |
| 4403262 | Audio signal muting circuit for magnetic recording and reproducing apparatus | Shigeyuki Ito | 1983-09-06 |
| 4403264 | Picture signal amplifying circuit for magnetic video recording and reproducing apparatus | Atsushi Yoshioka | 1983-09-06 |
| 4361813 | FM Audio demodulator with dropout noise elimination circuit | — | 1982-11-30 |
| 4216431 | Integrated circuit for frequency conversion | Akira Shibata | 1980-08-05 |