Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6952486 | Digital watermark embedding method and apparatus, and digital watermark | Tomoo Yamakage, Hisashi Yamada, Toru Kambayashi, Shinichiro Koto | 2005-10-04 |
| 6901515 | Code generating method and unit thereof, code detecting method and unit thereof, and watermark embedding unit and watermark detecting unit | — | 2005-05-31 |