Issued Patents All Time
Showing 76–91 of 91 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6110610 | Photomagnetic recording medium and film forming method | Minehiro Tonosaki | 2000-08-29 |
| 5978350 | Optical disc and optical disc driving device | Minoru Tobita, Satoshi Otsuka, Tamotsu Yamagami | 1999-11-02 |
| 5793738 | Optical disc | Yoshihito Fukushima | 1998-08-11 |
| 5684783 | Reproducing apparatus having a detector for simultaneously scanning adjacent tracks of an optical recording medium | Hideyoshi Horimai | 1997-11-04 |
| 5633854 | Methods and apparatus for reproducing data recorded on an optical recording medium | Hideyoshi Horimai | 1997-05-27 |
| 5625620 | Optical disc | Yoshihito Fukushima | 1997-04-29 |
| 5606545 | Reproducing apparatus having a detector for simultaneously scanning adjacent tracks of an optical recording medium | Hideyoshi Horimai | 1997-02-25 |
| 5602810 | Tracking error generating method using sampling of servo pits and switching of differential signals | Hideyoshi Horimai | 1997-02-11 |
| 5559786 | Information recording on a track by logical operation of the information on a neighboring track | Hideyoshi Horimai | 1996-09-24 |
| 5557602 | Optical recording medium, recording and reproducing method and tracking error generating method | Hideyoshi Horimai | 1996-09-17 |
| 5513161 | Optical recording medium, recording and reproducing method and tracking error generating method | Hideyoshi Horimai | 1996-04-30 |
| 5469420 | Multi-value recorded data detecting method | Minoru Tobita | 1995-11-21 |
| 5469415 | Optical information recording or reproducing apparatus with asymmetry compensation | Minoru Tobita | 1995-11-21 |
| 5448535 | Head position control device | Kiyoshi Toyota, Shoji Iwaasa, Hiroshi Kashiwagi | 1995-09-05 |
| 5182734 | Magneto-optical recording apparatus with pulse driven light beam and variable delay of magnetic field reversals based on recording medium characteristics | Tetsu Watanabe, Tetsuji Kawashima | 1993-01-26 |
| 5182742 | Recording and/or reproducing apparatus with a disc cartridge temperature sensor | Kiyoshi Ohmori, Shoji Iwaasa | 1993-01-26 |