| 7748041 |
Tool, method, and program for supporting system security design/evaluation |
Masato Arai, Yasuhiko Nagai, Hidaka Matsumoto |
2010-06-29 |
| 7478432 |
Method and system for contents control |
Isao Echizen, Hiroshi Yoshiura, Kunihiko Miyazaki, Jun'ichi Taguchi, Kazunori Nakano +1 more |
2009-01-13 |
| 7310428 |
Method of detecting digital watermark information |
Isao Echizen, Hiroshi Yoshiura |
2007-12-18 |
| 7293294 |
Method and apparatus for using contents |
Hiromi Ukai, Shigeki Hirasawa, Isao Echizen, Hiroshi Yoshiura, Masataka Okayama +1 more |
2007-11-06 |
| 7113613 |
Watermark information detection method |
Isao Echizen, Hiroshi Yoshiura, Hiroyuki Kimura, Akio Fukushima |
2006-09-26 |
| 7065226 |
Method for embedding information and extracting the same |
Isao Echizen, Hiroshi Yoshiura, Shinobu Eikawa |
2006-06-20 |
| 6970575 |
Method of extracting digital watermark information and method of judging bit value of digital watermark information |
Isao Echizen, Hiroshi Yoshiura, Yutaka Kurosu |
2005-11-29 |
| 6959101 |
Method of judging digital watermark information |
Hiroshi Yoshiura, Yutaka Kurosu |
2005-10-25 |
| 6665417 |
Method of judging digital watermark information |
Hiroshi Yoshiura, Yutaka Kurosu |
2003-12-16 |
| 6650763 |
Method of extracting digital watermark information and method of judging bit value of digital watermark information |
Isao Echizen, Hiroshi Yoshiura, Yutaka Kurosu |
2003-11-18 |
| 6563935 |
Method of extracting digital watermark information and method of judging bit value of digital watermark information |
Isao Echizen, Hiroshi Yoshiura, Yutaka Kurosu |
2003-05-13 |
| 6456727 |
Method of extracting digital watermark information and method of judging but value of digital watermark information |
Isao Echizen, Hiroshi Yoshiura, Yutaka Kurosu |
2002-09-24 |