Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699342 | Method of and device for recording and playing back an optical disk having a test playback region utilizing pits of minimum size for controlling the power of the laser | Kosuke Yagi, Naoyuki Egusa | 1997-12-16 |
| 5602688 | Method and apparatus for controlling surface pressure exerted on a movable magnetic head by a recording medium | Eiji Yokoyama | 1997-02-11 |