Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5617268 | Tracking control apparatus that switches polarity of tracking error signal according to detected kind of pilot signal | Yoshio Sakakibara | 1997-04-01 |
| 5594602 | Tracking error detecting circuit | Haruo Isaka, Toshihiko Maruoka, Kei Ichikawa, Kenichi Honjo | 1997-01-14 |