Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887169 | Video signal recording and playback apparatus having varied-speed playback capability | Shigeru Awamoto, Mitsuo Chiba, Seishi Sasaki | 1989-12-12 |
| 4839744 | Video signal recording method and associated recording/reproducing apparatus | Seishi Sasaki, Shigeru Awamoto, Katsuya Yokoyama, Hiromichi Shibaya | 1989-06-13 |
| 4807056 | Method and apparatus for video signal recording and playback signal level compensation based on recorded reference signal | Seishi Sasaki, Mitsuo Chiba, Shigeru Awamoto | 1989-02-21 |