Issued Patents All Time
Showing 26–50 of 69 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7624331 | Information recording disc, recording and/or reproducing device and method | Shoei Kobayashi, Susumu Senshu, Tamotsu Yamagami, Makoto Usui, Mitsurou Moriya +3 more | 2009-11-24 |
| 7620993 | Copyright protection system, key generation apparatus, recording apparatus, reproduction apparatus, read-out apparatus, decryption apparatus, recording medium, recording method and program | Naoki Yamamoto, Makoto Tatebayashi, Toshihisa Nakano | 2009-11-17 |
| 7613986 | Information recording device and method, information reproducing device and method, recording medium, program, and disc recording medium | Shoei Kobayashi, Susumu Senshu, Tamotsu Yamagami, Makoto Usui, Mitsurou Moriya +3 more | 2009-11-03 |
| 7610626 | Recording medium, recording apparatus, reading apparatus, and program and method therefore | Takahiro Nagai, Kaoru Murase | 2009-10-27 |
| 7542568 | Encryption device a decrypting device a secret key generation device a copyright protection system and a cipher communication device | Motoji Ohmori, Makoto Tatebayashi, Takahiro Nagai | 2009-06-02 |
| 7484090 | Encryption apparatus, decryption apparatus, secret key generation apparatus, and copyright protection system | Motoji Ohmori, Makoto Tatebayashi, Toshihisa Nakano | 2009-01-27 |
| 7454688 | Information recording disc, recording and/or reproducing device and method | Shoei Kobayashi, Susumu Senshu, Tamotsu Yamagami, Makoto Usui, Mitsurou Moriya +3 more | 2008-11-18 |
| 7400725 | Information recording medium for recording a scrambled part of content information, and method and apparatus for reproducing information recorded therein | Takashi Yumiba, Yoshihisa Fukushima, Makoto Tatebayashi, Kaoru Yokota | 2008-07-15 |
| 7386126 | Content protection system, key data generation apparatus, and terminal apparatus | Toshihisa Nakano, Motoji Ohmori, Natsume Matsuzaki, Makoto Tatebayashi, Naoki Yamamoto | 2008-06-10 |
| 7373503 | Public key certificate revocation list generation apparatus, revocation judgement apparatus, and authentication system | Toshihisa Nakano, Motoji Ohmori, Makoto Tatebayashi | 2008-05-13 |
| 7339869 | Optical disk and optical method | Kenzo Ishibashi, Yasumori Hino, Takahiro Nagai, Shinichi Tanaka | 2008-03-04 |
| 7317868 | Optical disk for high resolution and three-dimensional video recording, optical disk reproduction apparatus, and optical disk recording apparatus | Mitsuaki Oshima, Hiromu Kitaura, Hideki Fukuda, Toshiyuki Kawara | 2008-01-08 |
| 7298844 | Recording/reproducing apparatus, data moving method, and data deletion method | Hiroshi Sugimoto, Takahiro Nagai, Hirofumi Ide | 2007-11-20 |
| 7274860 | Apparatus, method, and recording medium implementing audio gap information for an audio presentation discontinuous period | Tomoyuki Okada, Yoshihiro Mori, Kazuhiro Tsuga, Hiroshi Hamasaka, Kazuhiko Nakamura +1 more | 2007-09-25 |
| 7196994 | Information recording medium, information recording apparatus and information reproduction apparatus for the same | Masaru Yamaoka, Takashi Yumiba, Takahiro Nagai | 2007-03-27 |
| 7164644 | Optical disc, recording apparatus method, and reproduction apparatus and method | Takahiro Nagai, Takashi Yumiba, Rie Takahashi, Mamoru Shoji, Hiroyuki Yamaguchi +1 more | 2007-01-16 |
| 7133349 | Optical disc, recording apparatus and method, and reproduction apparatus and method | Takahiro Nagai, Takashi Yumiba, Rie Takahashi, Mamoru Shoji, Hiroyuki Yamaguchi +1 more | 2006-11-07 |
| 7092342 | Optical disc, recording apparatus and method, and reproduction apparatus and method | Takahiro Nagai, Takashi Yumiba, Rie Takahashi, Mamoru Shoji, Hiroyuki Yamaguchi +1 more | 2006-08-15 |
| 6937553 | Recorder for recording copy of production on the basis of copy attribute embedded as electronic watermark in the production, reproducing device for reproducing recorded copy, recorded medium, recording method, and reproducing method | Yoshitaka Mitui | 2005-08-30 |
| 6938162 | Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system | Takahiro Nagai, Yuji Takagi, Takashi Yumiba, Mamoru Shoji, Mitsuaki Oshima +6 more | 2005-08-30 |
| 6925250 | Optical disc for recording high resolution and normal image, optical disc player, optical disc recorder, and playback control information generator | Mitsuaki Oshima, Hiromu Kitaura, Hideki Fukuda | 2005-08-02 |
| 6802074 | Recording apparatus, transmitting apparatus, and computer-readable recording medium | Yoshitaka Mitsui, Takahiro Nagai | 2004-10-05 |
| 6573819 | Optical disc for high resolution and three-dimensional image recording, optical disc reproducing device, and optical disc recording device | Mitsuaki Oshima, Hiromu Kitaura, Hideki Fukuda, Toshiyuki Kawara | 2003-06-03 |
| 6549722 | Apparatus, method, and recording medium implementing audio gap information for an audio presentation discontinuous period | Tomoyuki Okada, Yoshihiro Mori, Kazuhiro Tsuga, Hiroshi Hamasaka, Kazuhiko Nakamura +1 more | 2003-04-15 |
| 6341199 | Apparatus, method, and recording medium implementing audio gap information for an audio presentation discontinuous period | Tomoyuki Okada, Yoshihiro Mori, Kazuhiro Tsuga, Hiroshi Hamasaka, Kazuhiko Nakamura +1 more | 2002-01-22 |