Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6470090 | Digital watermark insertion system and digital watermark characteristic table creating device | Yoshihiro Miyamoto, Mutsumi Ohta | 2002-10-22 |
| 6415041 | Digital watermark insertion system and digital watermark characteristic table creating device | Yoshihiro Miyamoto, Mutsumi Ohta | 2002-07-02 |
| 6415060 | Lossless transform coding system having compatibility with lossy coding | — | 2002-07-02 |
| 6363119 | Device and method for hierarchically coding/decoding images reversibly and with improved coding efficiency | — | 2002-03-26 |