Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8953390 | Semiconductor memory device | Teruo Takagiwa | 2015-02-10 |
| 7636287 | Reproduced signal equalizing method for optical information media and optical information reproducing/recording apparatus | Shuichi Ohkubo, Hiromi Honma, Masaki Nakano, Toshiaki Iwanaga, Yutaka Kashihara +2 more | 2009-12-22 |
| 7586625 | Position verifying apparatus and method, position measuring apparatus and method, and computer program for position verification or position measurement | Tohru Kanegae, Masahiro Kato, Eisaku Kawano, Masahiro Miura | 2009-09-08 |
| 7551530 | Optical disc recording system | Naoto Yamamoto, Shigeru Shimonou | 2009-06-23 |
| 7471601 | Optical disk recording/reproducing method, optical disk recording/reproducing apparatus and optical disk | Yutaka Kashihara, Akihito Ogawa, Naoki Morishita, Masaki Nakano, Shuichi Ookubo +1 more | 2008-12-30 |
| 7457218 | Data reproducing method using tilt adjustment and data reproducing apparatus for the same | Shuichi Ohkubo | 2008-11-25 |
| 7428203 | Signal evaluation method, information recording/reproducing apparatus, information reproducing apparatus, and information recording medium | Yutaka Kashihara, Yuji Nagai, Shuichi Ookubo, Masaki Nakano, Toshiaki Iwanaga | 2008-09-23 |
| 7406015 | Information recording medium, method of generating flag, method of producing information recording medium, method of adjusting recording conditions of information recording medium, method of recording for information recording medium and information recording device | — | 2008-07-29 |
| 7336576 | Optical disk medium and optical disk recording/reproducing apparatus utilizing tilt detection areas having special marks | Yutaka Yamanaka, Ryuichi Katayama, Takeharu Shibatoko, Daisuke Eto, Chosaku Noda +2 more | 2008-02-26 |
| 7184381 | Optical disk, optical disk recording/reproduction apparatus, and optical disk signal quality evaluation method | Shuichi Ohkubo, Hiromi Honma, Masaki Nakano, Toshiaki Iwanaga, Yutaka Kashihara +1 more | 2007-02-27 |
| 7158460 | Method and apparatus for adjusting conditions for recording and reproducing informations | — | 2007-01-02 |
| 7154833 | Laser power selecting method, information recording medium, and information recording device | — | 2006-12-26 |
| 7151642 | Information playback method and apparatus | Shuichi Ohkubo | 2006-12-19 |
| 6925049 | Optical recording medium as well as method and device for recording and reading same | — | 2005-08-02 |
| 6885622 | Track offset compensation in optical disk drives using beat-inducing signals | — | 2005-04-26 |
| 6424612 | Reproducing method and apparatus for optical disk | — | 2002-07-23 |
| 6256286 | Method for initiating a phase change recording medium | — | 2001-07-03 |
| 6129968 | Phase change recording medium and method for recording therein and reproduction therefrom | — | 2000-10-10 |
| 6094405 | Initialization method for phase change type recording medium | — | 2000-07-25 |
| 5917799 | Method of reading data of magneto-optical recording medium which includes a guide groove portion having land and groove areas | Masafumi Nakada | 1999-06-29 |
| 5896366 | Optical recording medium having a plurality of recorded pits of different heights and depths | — | 1999-04-20 |
| 5878022 | High density optical information recording medium using high refractive index layer | Mitsuya Okada | 1999-03-02 |
| 5798987 | Low noise magneto-optical disk drive | — | 1998-08-25 |
| 5781524 | High density optical head assembly | — | 1998-07-14 |
| 5748572 | Magneto-optical recording apparatus with an optical element providing a high C/N ratio | — | 1998-05-05 |