Issued Patents 2004
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6826291 | Method and system for embedding information into contents | Hiroshi Yoshiura, Isao Echizen, Junichi Taguchi, Akira Maeda, Toshifumi Takeuchi | 2004-11-30 |
| 6807364 | Digital information recording-reproducing apparatus | Nobutaka Amada, Takaharu Noguchi, Hiroo Okamoto, Shigeru Yamazaki | 2004-10-19 |
| 6778757 | Data recording/reproduction apparatus and method | Osamu Kawamae, Toshifumi Takeuchi, Hiroyuki Kimura | 2004-08-17 |
| 6731451 | Information management apparatus | Hiroaki Ono, Kiyoshi Kano, Hideo Nishijima, Takaharu Noguchi, Nobutaka Amada +5 more | 2004-05-04 |
| 6728408 | Water-mark embedding method and system | Isao Echizen, Hiroshi Yoshiura, Masafumi Nakamura, Toshifumi Takeuchi | 2004-04-27 |
| 6711276 | Control method and apparatus for embedding information in data | Hiroshi Yoshiura, Isao Echizen, Hiroyuki Kimura, Toshifumi Takeuchi, Yoshiaki Moriyama +2 more | 2004-03-23 |
| 6690813 | Method and apparatus for recording and reproducing electronic watermark information, and recording medium | Hiroyuki Kimura, Toshifumi Takeuchi, Hiroshi Yoshiura | 2004-02-10 |
| 6674858 | Receiving device, recording and reproducing device and receiving/recording-reproducing system for digital broadcast signal | Hiroyuki Kimura, Toshifumi Takeuchi | 2004-01-06 |