Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5636191 | Positioning control system utilizing optical beam having servo-error signal generating circuit | Shigeyoshi Tanaka, Michio Matsuura, Hiromichi Kuwano, Kazuyuki Tamanoi | 1997-06-03 |
| 5631817 | Load current control of pulse width modulated drive signal including calibration and correction coefficient | — | 1997-05-20 |
| 5631890 | Light modulation method for optical disk drive device | Toru Ikeda, Shigenori Yanagi | 1997-05-20 |