Issued Patents 1994
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5343454 | Tracking control apparatus for correcting tracking error signal according to approximate equation of a function of track address | Katsuya Watanabe, Masayuki Shibano, Hiroyuki Yamaguchi, Yasuaki Edahiro | 1994-08-30 |
| 5331615 | Tracking control apparatus for an optical disk device | Shinichi Yamada, Masayuki Shibano, Hiroyuki Yamaguchi | 1994-07-19 |
| 5319623 | Data-track search apparatus for locating a desired data track on a record carrier | Shinichi Yamada, Hiroyuki Yamaguchi | 1994-06-07 |
| 5295131 | Optical information recording disk having embossed clock mark pits and embossed information recording pits | Hiromichi Ishibashi | 1994-03-15 |