Issued Patents All Time
Showing 26–50 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6034618 | Device authentication system which allows the authentication function to be changed | Makoto Tatebayashi, Natsume Matsuzaki, Yoshihisa Fukushima, Atsushi Ishihara | 2000-03-07 |
| 6028979 | Multilingual recording medium and reproduction apparatus | Masatoshi Nakai, Yuichi Miyano, Kenjiro Endoh | 2000-02-22 |
| 6009174 | Secret key transfer method which is highly secure and can restrict the damage caused when the secret key is leaked or decoded | Makoto Tatebayashi, Motoji Ohmori, Takehisa Kato, Naoki Endoh | 1999-12-28 |
| 5999695 | Multilingual recording medium and reproduction apparatus | Masatoshi Nakai, Yuichi Miyano, Kenjiro Endoh | 1999-12-07 |
| 5987066 | Digital data transmitting method | Tadashi Kojima, Hisashi Yamada, Yoshiaki Moriyama, Fumihiko Yokogawa, Takao Arai +4 more | 1999-11-16 |
| 5978958 | Data transmission system, data recording and reproducing apparatus and recording medium each having data structure of error correcting code | Shin-ichi Tanaka, Masatoshi Shimbo, Shinya Yamada, Tadashi Kojima | 1999-11-02 |
| 5956457 | Multi-scene recording medium and apparatus for reproducing data therefrom | Masatoshi Nakai, Kenji Shimoda | 1999-09-21 |
| 5917857 | Digital modulation apparatus, a digital modulation method, and a recording medium therefor | Shin-ichi Tanaka, Toshiyuki Shimada, Tadashi Kojima, Yoshiaki Moriyama, Fumihiko Yokogawa +2 more | 1999-06-29 |
| 5912869 | Recording medium data transmission method and apparatus and data reproduction method and apparatus | Shin-ichi Tanaka, Toshiyuki Shimada, Tadashi Kojima | 1999-06-15 |
| 5911032 | Multi-scene recording medium and apparatus for reproducing data therefrom | Masatoshi Nakai, Kenji Shimoda | 1999-06-08 |
| 5881037 | Recording medium, recording method and apparatus, and reproduction method and apparatus | Shin-ichi Tanaka, Toshiyuki Shimada, Tadashi Kojima | 1999-03-09 |
| 5867475 | Optical record carrier and method for recording and reproducing signals therefrom | Mitsurou Moriya, Shin-ichi Tanaka | 1999-02-02 |
| 5850500 | Recording medium comprising a plurality of different languages which are selectable independently of each other | Masatoshi Nakai, Yuichi Miyano, Kenjiro Endoh | 1998-12-15 |
| 5848041 | Method and apparatus for recording digital signals medium for recording digital signals and method | Hiroharu Satoh | 1998-12-08 |
| 5845046 | Multi-scene recording medium and apparatus for producing data therefrom | Masatoshi Nakai, Kenji Shimoda | 1998-12-01 |
| 5835670 | Multilingual recording medium and reproduction apparatus | Masatoshi Nakai, Yuichi Miyano | 1998-11-10 |
| 5835669 | Multilingual recording medium which comprises frequency of use data/history data and a plurality of menus which are stored in a still picture format | Masatoshi Nakai, Yuichi Miyano, Kenjiro Endoh | 1998-11-10 |
| 5835531 | Signal equalizer | — | 1998-11-10 |
| 5832175 | Apparatus and method for reproducing, based on parental consent, data from a multi-scene recording medium having data units of program information items alternatingly and continuously recorded thereon | Masatoshi Nakai, Kenji Shimoda | 1998-11-03 |
| 5819003 | Multi-scene recording medium having data units of program information items recorded alternatingly and continuously thereon, and apparatus for reproducing data therefrom | Masatoshi Nakai, Kenji Shimoda | 1998-10-06 |
| 5815633 | Multi-scene recording medium and apparatus for reproducing data therefrom | Masatoshi Nakai, Kenji Shimoda | 1998-09-29 |
| 5793872 | Apparatus and method for reproducing data from a multi-scene recording medium having data units of program information items recorded alternatingly and continuously thereon | Masatoshi Nakai, Kenji Shimoda | 1998-08-11 |
| 5790569 | Method and apparatus for generating, recording and transmitting an error product code block having an improved check code arrangement | Tadashi Kojima, Yoshihisa Fukushima, Takashi Yumiba | 1998-08-04 |
| 5784519 | Multi-scene recording medium and apparatus for reproducing data therefrom | Masatoshi Nakai, Kenji Shimoda | 1998-07-21 |
| 5778136 | Multi-scene recording medium wherein related data segments of simultaneously proceeding scenes are recorded alternatingly and continuously thereon | Masatoshi Nakai | 1998-07-07 |