Issued Patents 1994
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5369628 | Magneto-optic recording medium, magneto-optic recording system and magneto-optic recording method | Osamu Ito, Kunimaro Tanaka, Koichi Takeuchi, Isao Watanabe, Kazuhiko Tsutsumi | 1994-11-29 |
| RE34769 | Current mirror amplifier for use in an optical data medium driving apparatus and servo-circuit | Kyouji Shimoda | 1994-11-01 |
| 5321675 | Pit spacing in the servo field of an optical disk for speed and direction detection and data retrieval | Osamu Ito, Masaharu Ogawa, Kunimaro Tanaka, Teruo Furukawa, Masafumi Ototake | 1994-06-14 |
| 5319626 | Method for rewriting defect management areas on optical disk according to ECMA standard | Minoru Ozaki, Hiroyuki Onda, Koji Yamana, Takuya Nagata, Hidehiko Murata +1 more | 1994-06-07 |
| 5317143 | Optical data medium driving apparatus and a servo circuit with normalization processing | Kyouji Shimoda | 1994-05-31 |
| 5309415 | Information recording method for overwriting a magneto-optic recording medium with two intensities of light beams | Koichi Takeuchi, Osamu Ito, Kunimaro Tanaka, Isao Watanabe, Kazuhiko Tsutsumi +6 more | 1994-05-03 |