Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4862443 | Sync signal detection apparatus for accurately synchronizing reproduced data | Kentaroh Tsuji, Shigemi Maeda, Takeshi Yamaguchi, Toshihisa Deguchi, Noriaki Sakamoto | 1989-08-29 |
| 4849953 | Tracking circuit for an optical information recording and reproducing apparatus | Masaru Nomura, Toshihisa Deguchi | 1989-07-18 |