Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5703859 | Digital video copy protection system | Katsumi Tahara, Yoichi Yagasaki, Yasushi Fujinami | 1997-12-30 |
| 5675383 | Encoding method, encoding unit, decoding method, decoding unit, recording medium, and transmission method | Yoichi Yagasaki | 1997-10-07 |