Issued Patents 2003
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6657831 | Information signal recording and playback method and apparatus therefor | Seiichi Saito, Masafumi Nakamura, Junji Shiokawa, Osamu Kawamae | 2003-12-02 |
| 6584210 | Digital watermark image processing method | Junichi Taguchi, Hiroshi Yoshiura, Isao Echizen, Akira Maeda, Takao Arai | 2003-06-24 |
| 6578149 | METHOD FOR REPRODUCING DATA, APPARATUS FOR REPRODUCING DATA, METHOD FOR CODING DATA, METHOD FOR RECORDING DATA, APPARATUS FOR RECORDING AND REPRODUCING DATA, METHOD FOR AUTHENTICATION, SEMICONDUCTOR CHIP, REPRODUCING APPARATUS, RECORDING APPARATUS AND DATA PROCESSING APPARATUS | Osamu Kawamae, Hiroyuki Kimura, Takao Arai, Hiroshi Yoshiura | 2003-06-10 |
| 6549579 | Transmitting and recording method, reproducing method, and reproducing apparatus of information and its recording medium | Masafumi Nakamura | 2003-04-15 |
| 6535614 | Method and apparatus for recording and reproducing electronic watermark information, and recording medium | Hiroyuki Kimura, Takao Arai, Hiroshi Yoshiura | 2003-03-18 |
| 6519351 | Method and apparatus for recording and reproducing electronic watermark information, and recording medium | Hiroyuki Kimura, Takao Arai, Hiroshi Yoshiura | 2003-02-11 |