Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7881166 | Optical pickup device | — | 2011-02-01 |
| 7813234 | Optical pickup and optical pickup aberration correcting method | — | 2010-10-12 |
| 6930968 | Semiconductor laser driving apparatus with filter to attenuate enhanced frequency component and optical disk apparatus including the same | Toshiya Akagi, Yoshiyuki Miyabata, Yuichi Takahashi | 2005-08-16 |
| 6744721 | Optical disk drive | Chikashi Inokuchi, Takayuki Sakabayashi | 2004-06-01 |
| 6469980 | Optical disk and a recording/reproduction apparatus using multiple address block groups shifted oppositely with multiple address blocks and non-pit data | Yoshinari Takemura, Shigeru Furumiya, Takashi Ishida, Yoshito Aoki, Shunji Ohara +1 more | 2002-10-22 |
| 6456585 | Optical disk and a recording/reproduction apparatus using multiple address block groups shifted oppositely with multiple address blocks having clock synchronization, address number and address ID | Yoshinari Takemura, Shigeru Furumiya, Takashi Ishida, Yoshito Aoki, Shunji Ohara +1 more | 2002-09-24 |
| 6438096 | Optical disk and a recording/reproduction apparatus using multiple address block groups shifted oppositely with multiple address blocks and clock synchronization | Yoshinari Takemura, Shigeru Furumiya, Takashi Ishida, Yoshito Aoki, Shunji Ohara +1 more | 2002-08-20 |
| 6396778 | Optical disk and a recording/reproduction apparatus thereof | Yoshinari Takemura, Shigeru Furumiya, Takashi Ishida, Yoshito Aoki, Shunji Ohara +1 more | 2002-05-28 |
| 6339579 | Semiconductor laser diode driving device and driving method | Kenji Koishi, Yoshiyuki Miyabata, Naoyuki Nakamura, Kenichi Tatehara, Ikuo Hidaka +1 more | 2002-01-15 |
| 6172960 | Optical disk and recording/reproducing apparatus using multiple address block groups shifted oppositely with multiple address blocks | Yoshinari Takemura, Shigeru Furumiya, Takashi Ishida, Yoshito Aoki, Shunji Ohara +1 more | 2001-01-09 |
| 5850378 | Method and apparatus for recording data on an optical disk and or groove | Jun-ichi Ninamino, Shigeru Furumiya, Kenji Koishi | 1998-12-15 |
| 5831951 | Method and apparatus for controlling a slice signal in the reproduction information recorded in an optical disk | Shigeru Furumiya, Yuji Hisakado | 1998-11-03 |
| 5671209 | Focusing time period and power control of a multilaser diode array | Kenji Koishi, Daisuke Ogata, Shigeru Furumiya | 1997-09-23 |