Issued Patents All Time
Showing 25 most recent of 72 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8477589 | Optical pickup and optical disc drive | Akira KITAYAMA, Kazuhide Hamada | 2013-07-02 |
| 8305869 | Optical disc drive | Akira KITAYAMA, Hajime Nishimura | 2012-11-06 |
| 8144559 | Multiple pulse recording method with 3-valued power levels | Hiroyuki Minemura, Tsuyoshi Toda | 2012-03-27 |
| 7924664 | Optical disk apparatus, optical head, and detection signal processing method thereof | — | 2011-04-12 |
| 7746748 | Optical disc device and reproduction method | Kazuhide Hamada | 2010-06-29 |
| 7499478 | Laser driver, optical disk apparatus using the same, and laser control method | Makoto Nihei, Akihiro Asada, Takashi Hoshino | 2009-03-03 |
| 7227818 | Magneto-optical data recording/reproducing method | Tsuyoshi Toda, Takeshi Maeda, Fumio Kugiya, Hiroshi Ide, Hiroyuki Tsuchinaga +2 more | 2007-06-05 |
| 7227822 | Laser driver and optical disk system | Koichiro Nishimura, Manabu Katsuki | 2007-06-05 |
| 7170838 | Information recording and reproducing apparatus | Tsuyoshi Toda | 2007-01-30 |
| 7031244 | Information recording/reproducing apparatus | Norimoto Ichikawa, Hiroyuki Minemura, Hisataka Sugiyama | 2006-04-18 |
| RE39013 | Method and apparatus for optical recording and reproducing with tracking servo reducing track offset | Kazuo Shigematsu, Hisataka Sugiyama, Takeshi Maeda, Masahiro Takasago | 2006-03-14 |
| 6954410 | Information recording and reproducing apparatus for updating the waveform of a laser based on position information | Takashi Hoshino, Akihiro Asada, Takehiko Sekine | 2005-10-11 |
| 6831885 | Optical disk apparatus wherein recording clock signal is stopped being supplied to semiconductor laser drive circuit on optical pickup during reproduction operation | Akihiro Asada, Takashi Hoshino, Masaaki Kurebayashi | 2004-12-14 |
| 6810050 | Laser driver, optical disk apparatus using the same, and laser control method | Makoto Nihei, Akihiro Asada, Takashi Hoshino | 2004-10-26 |
| 6754144 | Optical information recording/reproducing apparatus | Tetsuya Fushimi, Hisataka Sugiyama | 2004-06-22 |
| 6747934 | Information recording/reproducing apparatus having verify control for recording | Norimoto Ichikawa, Hiroyuki Minemura, Hisataka Sugiyama | 2004-06-08 |
| 6721261 | Information recording/reproducing apparatus with laser driver | Akihiro Asada, Takashi Hoshino | 2004-04-13 |
| 6687208 | Laser drive integrated circuit and optical disk apparatus using the same | Akihiro Asada, Hideo Ohnuki, Masaaki Kurebayashi, Yasuhito Tanaka, Takashi Hoshino +1 more | 2004-02-03 |
| 6674702 | Laser drive integrated circuit and optical disk apparatus using the same | Akihiro Asada, Hideo Ohnuki, Masaaki Kurebayashi, Yasuhito Tanaka, Takashi Hoshino +1 more | 2004-01-06 |
| 6654328 | Information recording/reproducing apparatus with laser driver | Akihiro Asada, Takashi Hoshino | 2003-11-25 |
| 6636472 | Laser drive unit and information recording/reproducing apparatus | Masaaki Kurebayashi, Akihiro Asada, Hideo Oonuki, Takashi Hoshino, Hidehiko Kandou | 2003-10-21 |
| 6552987 | Optical disk apparatus wherein recording clock signal is stopped being supplied to semiconductor laser drive circuit on optical pickup during reproduction operation | Akihiro Asada, Takashi Hoshino, Masaaki Kurebayashi | 2003-04-22 |
| 6496461 | Information recording/reproducing apparatus | Norimoto Ichikawa, Hiroyuki Minemura, Hisataka Sugiyama | 2002-12-17 |
| 6493297 | Multibeam optical disk record and reproduction apparatus and method | Soichi Isono, Satoshi Kawamura, Kiyoshi Honda, Hitoshi Komatsu, Yuji Yamane +3 more | 2002-12-10 |
| 6487154 | Laser drive unit and information recording/reproducing apparatus | Masaaki Kurebayashi, Akihiro Asada, Hideo Oonuki, Takashi Hoshino, Hidehiko Kandou | 2002-11-26 |