Issued Patents 2002
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6499105 | Digital data authentication method | Kazuo Takaragi, Ryoichi Sasaki, Seiichi Susaki, Hisashi Toyoshima, Tsukasa Saito | 2002-12-24 |
| 6456727 | Method of extracting digital watermark information and method of judging but value of digital watermark information | Isao Echizen, Yutaka Kurosu, Kousuke Anzai | 2002-09-24 |
| 6418232 | Method of authenticating digital-watermark pictures | Kazunori Nakano, Juńichi Taguchi, Isao Echizen, Yutaka Kurosu | 2002-07-09 |
| 6411714 | Data decompression/decryption method and system | Kazuo Takaragi, Yusuke Hino, Yutaka Otsu | 2002-06-25 |
| 6404781 | Data transmission method for embedded data, data transmitting and reproducing apparatuses and information recording medium therefor | Osamu Kawamae, Toshifumi Takeuchi, Takao Arai | 2002-06-11 |