Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6822209 | Focal point dislocation detecting method and optical pickup apparatus | Hiroyuki Tadano | 2004-11-23 |
| 6756575 | Aberration detecting method, optical recording and reproduction method using thereof, and optical recording and reproduction apparatus | Hiroyuki Tadano | 2004-06-29 |
| 6728179 | Apparatus and method for optical recording/reproducing information including electrical spherical-aberration correction mechanism having low power consumption | Eiji Yamada | 2004-04-27 |