Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12014761 | Optical disc device and recording and reproduction device | Yuuichi Kuze, Masatoshi Yajima, Akihiko Nishioka | 2024-06-18 |
| 10636447 | Optical disc drive device and playback device | Yuuichi Kuze, Masatoshi Yajima, Akihiko Nishioka | 2020-04-28 |
| 7558171 | Optical disc recording/playback apparatus | Youichi Ogura, Toshihiko Takahashi, Hiroaki Hayashi, Teruhiko Izumi, Dai Ichiryu | 2009-07-07 |
| 7558177 | Optical disc playback apparatus | Youichi Ogura | 2009-07-07 |
| 7539097 | Optical disk device | Youichi Ogura, Toshihiko Takahashi, Teruhiko Izumi, Hironori Deguchi, Takamasa Sakai | 2009-05-26 |
| 7433286 | Jitter detection apparatus | Youichi Ogura, Toshihiko Takahashi | 2008-10-07 |
| 7414924 | Magneto-optical recording medium having watermark for preventing unauthorized copy | Mitsuaki Oshima, Shin-ichi Tanaka, Kenji Koishi, Mitsurou Moriya, Yoshiho Gotoh +3 more | 2008-08-19 |
| 7239586 | Optical disk device and recording power determining method | Mamoru Shoji, Toshiya Akagi, Atsushi Nakamura, Ariaki Ito, Yukihiro Yamasaki +3 more | 2007-07-03 |
| 7145848 | Optical disk apparatus using tilt and aberration correction control system | Takeshi Nakajima | 2006-12-05 |
| RE39306 | Optical disc device | Takeshi Nakajima, Harumitsu Miyashita, Toshihiko Takahashi, Toshiya Akagi, Yuji Hisakado +1 more | 2006-09-26 |
| 7095696 | Recording/reproducing device | Takeshi Nakajima, Harumitsu Miyashita, Toshiya Akagi | 2006-08-22 |
| 7035327 | Adaptive equalizer for use in information reproducing apparatus | Takeshi Nakajima | 2006-04-25 |
| 6937551 | PRML detector having a viterbi decoder outputting temporary judgement results | Harumitsu Miyashita, Atsushi Nakamura, Takeshi Nakajima, Junichi Minamino | 2005-08-30 |
| 6934233 | Waveform equalizer for a reproduction signal obtained by reproducing marks and non-marks recorded on a recording medium | Harumitsu Miyashita, Atsushi Nakamura, Takeshi Nakajima, Junichi Minamino | 2005-08-23 |
| 6807134 | Asymmetry detection apparatus, jitter detection apparatus, and recording/reproduction apparatus | Takeshi Nakajima, Harumitsu Miyashita, Toshihiko Takahashi | 2004-10-19 |
| 6724706 | Digital adaptive equalizer for different quality signals | Takeshi Nakajima | 2004-04-20 |
| 6678230 | Waveform equalizer for a reproduction signal obtained by reproducing marks and non-marks recorded on a recording medium | Harumitsu Miyashita, Atsushi Nakamura, Takeshi Nakajima, Junichi Minamino | 2004-01-13 |
| 6618337 | Information recording and reproduction apparatus | Harumitsu Miyashita, Takeshi Nakajima, Toshihiko Takahashi | 2003-09-09 |
| 6584046 | Method for reproducing information data from magneto-optical recording medium using linear polarized beam | Mitsuaki Oshima, Shin-ichi Tanaka, Kenji Koishi, Mitsurou Moriya, Yoshiho Gotoh +3 more | 2003-06-24 |
| 6577568 | Optical disk apparatus using tilt and aberration correction control system | Takeshi Nakajima | 2003-06-10 |
| 6434098 | Optical disc device | Takeshi Nakajima, Harumitsu Miyashita, Toshihiko Takahashi, Toshiya Akagi, Yuji Hisakado +1 more | 2002-08-13 |
| 6285638 | Disk and disk recording apparatus | Fumiaki Ueno | 2001-09-04 |
| 6266299 | Magneto-optical disk having write-once identification marks and method for recording thereof | Mitsuaki Oshima, Shin-ichi Tanaka, Kenji Koishi, Mitsurou Moriya, Yoshiho Gotoh +3 more | 2001-07-24 |
| 6163521 | Disk having read-only and read-write areas | Fumiaki Ueno | 2000-12-19 |
| 6104682 | Disk apparatus having a data reproducing system using a digital PLL | — | 2000-08-15 |