Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE40240 | Information recording/reproducing device using optical disk and method therefor and information recording system and information recording method | Toyoji Gushima, Toshiya Akagi | 2008-04-15 |
| RE39952 | Laser power controller and optical disk device | Shigeru Furumiya, Yoshiyuki Miyabata, Yuji Hisakado, Atsushi Miyazaki, Toshiya Akagi | 2007-12-25 |
| 7023777 | Optical disk recording/reproduction apparatus with a detection means for detecting dirt on the optical disk | Atsushi Miyazaki, Hiroyuki Yamaguchi | 2006-04-04 |
| 6975570 | Information recording/reproducing device using optical disk and method therefor and information recording system and information recording method | Toyoji Gushima, Toshiya Akagi | 2005-12-13 |
| 6950378 | Laser power control method and optical disk device | Atsushi Miyazaki, Hiroyuki Yamaguchi, Toshiya Akagi | 2005-09-27 |
| 6912190 | Optical disc apparatus and method for reading information from an optical disk having tracks and spaces between the tracks on which address information is recorded | Kenji Koishi, Kohjyu Konno, Yutaka Osada, Mitsuhiko Oohta, Takashi Kawai | 2005-06-28 |
| 6744721 | Optical disk drive | Yuichi Kamioka, Takayuki Sakabayashi | 2004-06-01 |
| 6621779 | Laser power controller and optical disk device | Shigeru Furumiya, Yoshiyuki Miyabata, Yuji Hisakado, Atsushi Miyazaki, Toshiya Akagi | 2003-09-16 |
| 6456573 | Information recording and reproducing apparatus | Yasuhiro Ueki, Yutaka Osada, Osamu Yanagisawa, Yuuichi Kamioka, Kohjyu Konno | 2002-09-24 |
| 6205095 | Optical disk device | Yuji Hisakado, Yukihiro Yamasaki | 2001-03-20 |
| 6172952 | Optical disk device with abnormal jump detection | Yukihiro Yamasaki, Yuji Hisakado, Jun'ichi Minamino, Shigeru Furumiya | 2001-01-09 |
| 5999506 | Data recording/reproducing device and recording medium | Mamoru Shoji, Yukihiro Yamasaki | 1999-12-07 |
| 5600616 | Optical information recording and reproducing apparatus with variable reproduction signal processing for information reconstruction and recording medium with its reproduction condition | Kenzou Ishibashi, Mayumi Hironaka | 1997-02-04 |
| 5268654 | Phase locked loop clock changeover apparatus in which the VCO is set to an initial value | Tadashige Furutani, Mayumi Hironaka, Kenzo Ishibashi | 1993-12-07 |