Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5644307 | Modulation method, recording method, reproducing method, recording and reproducing apparatus, recording and reproducing method, and reproducing apparatus | — | 1997-07-01 |
| 5615055 | Dual-mode digital signal recording and/or reproducing apparatus | Akio Tanaka, Kentaro Odaka | 1997-03-25 |