Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6134198 | Optical disc apparatus and tracking error signal calculation circuit | Yoshihiro Kobayashi | 2000-10-17 |
| 6130868 | Apparatus and method for controlling rotational speed during a pause operation | — | 2000-10-10 |
| 5606537 | Method of adjusting optics of optical pickup using error negating signal processing technique | — | 1997-02-25 |
| 5181195 | Tracking error signal generator with DC offset cancellation | Hidehiro Kume | 1993-01-19 |
| 5181193 | Optical pickup device for a recording and/or reproducing apparatus | Hidehiro Kume, Yoshiyuki Matsumoto | 1993-01-19 |
| 5144614 | Optical pickup device | Hidehiro Kume, Kenji Nagashima | 1992-09-01 |
| 4897828 | Optical pickup device | You Yoshitoshi, Hidehiro Kume, Yoshiyuki Matsumoto, Koji Mitsumori, Hiroshi Oinoue | 1990-01-30 |
| 4893296 | Optical pickup device | Yoshiyuki Matsumoto, Hidehiro Kume, Koji Mitsumori, You Yoshitoshi, Hiroshi Oinoue | 1990-01-09 |