Issued Patents All Time
Showing 1–25 of 78 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9240897 | Method of using AV devices and AV device system | Chiyo Akamatsu, Tsukasa Hasegawa, Tamotsu Ito, Hidefumi Goto, Yasunori Ohara | 2016-01-19 |
| 8699864 | Method and apparatus for receiving a digital signal and apparatus for recording and reproducing the digital signal | Hitoaki Owashi, Hiroo Okamoto, Kyoichi Hosokawa | 2014-04-15 |
| 8472785 | Digital information recording-reproducing apparatus | Nobutaka Amada, Takao Arai, Hiroo Okamoto, Shigeru Yamazaki | 2013-06-25 |
| 8340501 | Input-output circuit, recording apparatus and reproduction apparatus for digital video signal | Hiroo Okamoto, Kyoichi Hosokawa, Hitoaki Owashi, Hiroaki Tachibana | 2012-12-25 |
| 8326129 | Method of using AV devices and AV device system | Chiyo Akamatsu, Tsukasa Hasegawa, Tamotsu Ito, Hidefumi Goto, Yasunori Ohara | 2012-12-04 |
| 8306395 | Input-output circuit, recording apparatus and reproduction apparatus for digital video signal | Hiroo Okamoto, Kyoichi Hosokawa, Hitoaki Owashi, Hiroaki Tachibana | 2012-11-06 |
| 8270812 | Input-output circuit, recording apparatus and reproduction apparatus for digital video signal | Hiroo Okamoto, Kyoichi Hosokawa, Hitoaki Owashi, Hiroaki Tachibana | 2012-09-18 |
| 8254758 | Input-output circuit, recording apparatus and reproduction apparatus for digital video signal | Hiroo Okamoto, Kyoichi Hosokawa, Hitoaki Owashi, Hiroaki Tachibana | 2012-08-28 |
| 7844986 | Method and apparatus for receiving a digital signal and apparatus for recording and reproducing the digital signal | Hitoaki Owashi, Hiroo Okamoto, Kyoichi Hosokawa | 2010-11-30 |
| 7814563 | Recording/playback system for medium compliant to copy control | Akira Shibata, Hitoaki Owashi | 2010-10-12 |
| 7706541 | Information management apparatus | Hiroaki Ono, Kiyoshi Kano, Hideo Nishijima, Takao Arai, Nobutaka Amada +5 more | 2010-04-27 |
| 7333717 | Method of using AV devices and AV device system | Chiyo Akamatsu, Tsukasa Hasegawa, Tamotsu Ito, Hidefumi Goto, Yasunori Ohara | 2008-02-19 |
| 7319808 | Input-output circuit, recording apparatus and reproduction apparatus for digital video signal | Hiroo Okamoto, Kyoichi Hosokawa, Hitoaki Owashi, Hiroaki Tachibana | 2008-01-15 |
| 7224886 | Method of using AV devices and AV device system | Chiyo Akamatsu, Tsukasa Hasegawa, Tamotsu Ito, Hidefumi Goto, Yasunori Ohara | 2007-05-29 |
| 7197232 | Digital information recording-reproducing apparatus | Nobutaka Amada, Takao Arai, Hiroo Okamoto, Shigeru Yamazaki | 2007-03-27 |
| 6898578 | Recording apparatus for recording digital information | Manabu Sasamoto, Makoto Aikawa, Shigeru Hirahata | 2005-05-24 |
| 6807364 | Digital information recording-reproducing apparatus | Nobutaka Amada, Takao Arai, Hiroo Okamoto, Shigeru Yamazaki | 2004-10-19 |
| 6757478 | Method and apparatus for receiving a digital signal and apparatus for recording and reproducing the digital signal | Hitoaki Owashi, Hiroo Okamoto, Kyoichi Hosokawa | 2004-06-29 |
| 6731451 | Information management apparatus | Hiroaki Ono, Kiyoshi Kano, Hideo Nishijima, Takao Arai, Nobutaka Amada +5 more | 2004-05-04 |
| 6606385 | Data encrypting/decrypting conversion methods and apparatuses and data communication system adopting the same | Makoto Aikawa, Kazuo Takaragi, Hiroyuki Koreeda, Manabu Sasamoto, Hiroo Okamoto +2 more | 2003-08-12 |
| 6600870 | Input-output circuit, recording apparatus and reproduction apparatus for digital video signal | Hiroo Okamoto, Kyoichi Hosokawa, Hitoaki Owashi, Hiroaki Tachibana | 2003-07-29 |
| 6441979 | Apparatus for recording and reproducing digital information signals of different transmission rates | Nobutaka Amada, Takao Arai | 2002-08-27 |
| 6429985 | Digital information recording apparatus and digital information recording and reproducing apparatus | Nobutaka Amada, Takao Arai | 2002-08-06 |
| 6388831 | Apparatus and method for limiting the reproduction of main information | Hiroaki Ono, Kiyoshi Kano, Hideo Nishijima, Takao Arai, Nobutaka Amada +5 more | 2002-05-14 |
| 6363210 | Communication system for encrypted data and apparatus for selectively recording and reproducing received analog signal and received digital signal | Hitoaki Owashi, Hiroo Okamoto, Kyoichi Hosokawa, Kazuhiko YOSHIZAWA, Nobutaka Amada +3 more | 2002-03-26 |