Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8296629 | RDS compatible receiver and RDS data receiving method | — | 2012-10-23 |
| 7307942 | Information recording medium, information reproducing apparatus, information recording apparatus, and information recording/reproducing apparatus | Mitsuru Sato | 2007-12-11 |
| 7242645 | Optical disc player with focus pull-in function | Kazuo Takahashi, Mitsuru Sato | 2007-07-10 |
| 7116612 | Optical pickup device driven by an error signal obtained from an optical detector's output signals | Masakazu Ogasawara | 2006-10-03 |
| 6970409 | Information recording apparatus | Takanori Maeda | 2005-11-29 |
| 6865144 | Optical pickup apparatus and tilt amount detecting method | Takuma Yanagisawa, Takanori Maeda, Masayuki Iwasaki | 2005-03-08 |
| 6850474 | Multilayer optical recording medium and recording method and apparatus for the same | Takanori Maeda | 2005-02-01 |
| 6839313 | Information recording and reproducing apparatus | Takanori Maeda | 2005-01-04 |
| 6690500 | Aberration correction apparatus and method | Masakazu Ogasawara, Masayuki Iwasaki | 2004-02-10 |
| 6683732 | Objective lens collision preventing device and method for manufacturing the same | Takanori Maeda, Ikuya Kikuchi | 2004-01-27 |
| 6678232 | Aberration correcting element and assembly | Masakazu Ogasawara | 2004-01-13 |
| 6667947 | Optical multi-layer information recordating medium | Takanori Maeda, Ikuya Kikuchi, Makoto Sato, Katsuhiro Koike | 2003-12-23 |
| 6618351 | Cartridge and method of cleaning recordation medium surface | Kazuo Takahashi | 2003-09-09 |
| 6584057 | Optical pickup system | Noriaki Murao | 2003-06-24 |
| 6518555 | Polarization hologram lens, optical pickup, information reproduction apparatus and information recording apparatus | Ikuya Kikuchi | 2003-02-11 |
| 6442125 | Optical pickup | Takanori Maeda, Hajime Koyanagi | 2002-08-27 |
| 6370092 | Optical pickup and optical disk drive for use with a high-density optical disk | Takanori Maeda, Hajime Koyanagi | 2002-04-09 |
| 6198465 | System for producing a liquid crystal driving signal | Junichi Furukawa | 2001-03-06 |
| 6151154 | Optical pickup, aberration correction unit and astigmatism measurement method | Masakazu Ogasawara, Sakashi Ootaki, Junichi Furukawa, Kiyoshi Tateishi | 2000-11-21 |
| 6147951 | Recorded information reproduction method and recorded information reproduction apparatus with multiple reading elements | Junichi Furukawa, Hiroki Kuribayashi | 2000-11-14 |
| 6125086 | Method and apparatus for high speed reproduction of information recorded on an optical recording medium | Junichi Furukawa | 2000-09-26 |
| 5953292 | Rapid data reproduction method and apparatus for optical disk | Junichi Furukawa | 1999-09-14 |
| 5928318 | Clamping divider, processor having clamping divider, and method for clamping in division | — | 1999-07-27 |
| 5914923 | Tilt servo system | Junichi Furukawa | 1999-06-22 |
| 5909413 | Optical pickup apparatus having crosstalk balance and tilt correction | — | 1999-06-01 |